WLA WATER QUALITY MONITORING

2010 WATER QUALITY MONITORING SCHEDULE

2010-02-28T09:00:00.000-08:00

Below is the first pass of the 2010 Streams and Lake testing program.

I would like to thank all those who have responded and volunteered to support the Webster Lake Association Water Quality Monitoring effort.
I am especially delighted to see a number of new members sign up to support this effort this year.

This list shows only those who responded to our call for volunteers. There are 2-3 people who have been involved in past years but have not yet responded.

If you returned an email with your availability, your name should show on either the Streams or the Lake testing roster or both.

Upon further review, if any of the dates are problematic for you, please let me know and I will make the changes you want.

We are light for the March and April Streams testing roster and could use at least one more for the July Lake testing date.

2010 Streams Testing Roster

Friday March 19th
Al Huefner
Ken Chauvin
Kevin Sullivan
Nanie Zecco

Friday April 23nd
Al Huefner
Ernie Benoit
Ken Chauvin
Kevin Sullivan
Nancie Zecco

Friday May 14th
Al Huefner
Ernie Benoit
Ken Chauvin
Kevin Sullivan
Mark Gardell
Judy Keegan
Linda Littleton

Friday June 18th
Al Huefner
Ernie Benoit
Ken Chauvin
Kevin Sullivan
Mark Gardell
Judy Keegan
Linda Littleton

Friday July 16th
Al Huefner
Ernie Benoit
Ken Chauvin
Kevin Sullivan
Mark Gardell
Judy Keegan
Linda Littleton

Friday August 20th
Al Huefner
Ernie Benoit
Ken Chauvin
Kevin Sullivan
Mark Gardell
Judy Keegan
Linda Littleton

Friday Sept 17th
Al Huefner
Ernie Benoit
Ken Chauvin
Kevin Sullivan
Mark Gardell
Nancie Zecco

Friday October 15th
Al Huefner
Ernie Benoit
Ken Chauvin
Kevin Sullivan
Mark Gardell
Nancie Zecco

Friday November 19th
Al Huefner
Ernie Benoit
Ken Chauvin
Kevin Sullivan
Mark Gardell
Nancie Zecco

2010 Lake Testing Roster

Sunday April 25th
Ray Travis
Jean Travis
Ernie Benoit
Mark Gardell
Ed Wentland
Ray Gifford
Al Huefner
Steve Washburn

Sunday May 16th
Ray Travis
Jean Travis
Ernie Benoit
Mark Gardell
Ed Wentland
Ray Gifford
Al Huefner
Steve Washburn
Nick Buehler

Thursday June 17th
Ray Travis
Jean Travis
Ernie Benoit
Mark Gardell
Ed Wentland
Al Huefner
Nick Buehler
Nancie Zecco

Thursday July 15th
Ray Travis
Jean Travis
Ernie Benoit
Mark Gardell
Ed Wentland
Al Huefner
Nancie Zecco

Thursday August 19th
Ray Travis
Jean Travis
Ernie Benoit
Mark Gardell
Ed Wentland
Al Huefner
Nick Buehler
Nancie Zecco

Sunday Sept 19th
Ray Travis
Jean Travis
Ernie Benoit
Mark Gardell
Ed Wentland
Ray Gifford
Al Huefner
Steve Washburn
Nick Buehler

Sunday October 17th
Ray Travis
Jean Travis
Ernie Benoit
Mark Gardell
Ed Wentland
Ray Gifford
Al Huefner
Steve Washburn
Nick Buehler

Al Huefner
82 Lakeside Ave
Webster, Ma. 01570
(H)508-461-9775 (New 6/20/09)
(C)847-971-8190
email: HuefnerAL@aol.com
website: http://lakeside.homeserver.com/ (6am-10pm EST)

NOVEMBER 2009 WATER QUALITY MONITORING REPORT

2009-12-15T11:20:00.000-08:00

Below, please find the water quality monitoring report for November. Only the streams were done this month. The complete set of test data recorded in the file along with the Colorimeter analysis results can be found on the Lakeside Server at: http://lakeside.homeserver.com/ Click on the Lake Data and Information button. On the next screen, select 2009 Water Test Data Select the document you want to view from the list. All the documents for the 2009 season are included and begin with the year-month-Data Type such as: 2009-11 Colorimeter Results.

November 2009 Water Quality Monitoring Report
The streams were tested on the morning of Friday, November 20th. The testing was performed by 4 volunteers. The lake is not tested in November and this is the last streams test of the season. The 2010 testing season will begin in March of 2010.

This season yielded some unusual readings in both the lake and streams test data due most likely to the very different weather we had this season. Far more algae blooms were observed than past seasons and this resulting in higher turbidity readings (lower water clarity), more widely varying dissolved oxygen levels, along many questions and complaints from the residents with homes on the lake.

In November, a week before our test date, it had rained extending over several days. Then, for several days just before the testing day, the weather was dry. However, on the test day, heavy bands of showers moved through the area early, starting about 6:30am. By 9:30, the showers had moved out of the area, and the decision was made to go ahead with testing. Rainfall on the lakeside weather station located on the eastern shore of the lake registered .79” of rain during this 3 hour period of rain bringing the month to date total to 2.71” and the 2009 year to date, to 51.33” of rainfall. Lakeside Station also recorded winds gusts of up to 28 mph and a high temp of 62 degrees was seen on the test day.

The troll was calibrated starting at 7:45am and calibration was complete by 8:20am. No unusual conditions were encountered during calibration. The RDO calibration did report outside the range but per a tech note from In-Situ, the manufacturer, there is a software issue and the calibration that resulted is good.

General Observations

Several of the volunteers noted that the streams for this test were the highest they had ever seen. It should also be noted that this is the first time in the five years of testing that all streams continued to flow during the whole March thru November testing season. Except for this year, at least one or two of the streams would be dry on one or more of the monthly test dates. During the worst year, only Sucker Brook continued to flow.

This year, the runoff brook at the corner of Wakefield and Lakeside Ave was also tested. Unlike prior years, it continued to flow throughout the entire season. While this is a wet weather runoff brook, the test results were consistence with those seen in the main feeder streams to the lake.

The wet weather contributed to higher levels of algae than was seen in prior years. This showed up in the streams mainly in the form of higher turbidity (lower clarity) readings than past years. The higher water flow keep the streams flushed of any algae buildup in the streams with more ending up in the lake.

Site Observations

The testing plan submitted to the Ma. DEP calls for water samples to be taken at the Browns Brook 18, Mine Brook 17, and Sucker Brook 16 sites. The BB18 site is at the bridge on Gore Rd. and the MB17 and SB16 sites are at the bridges where these streams cross Mine Brook Road. Staff flow gauges are installed at the BB18, MB17, and SB16 and these readings are recorded on the streams field sheets. Water samples for Colorimeter testing of Phosphors, and Nitrates are taken at these same three sites.

A Troll snapshot was taken in the runoff brook at the corner of Wakefield and Lakeside Ave. Readings were taken each test month from this location.

The site labeled LKQ20 was the first stream site tested. This site is located next to the LKQ parking lot. The team observed high flow rates from both the upstream branch of Browns Brook, and the outflow pipe coming from LKQ. The flow from the Browns Brook branch indicated very clear water. Troll readings were taken in both branches to show the contrast. The water flow from the LQK outflow was Tan colored, suggesting a high level of sediments in the runoff from that source.

The picture below shows the outflow from LKQ on the left. The forefront stream is Browns Brook coming from above LKQ and the two join and are flowing off to the upper right side of the photo. That flow joins with Un-Named Brook a little further down to form the total flow seen at the Lower Gore Rd Bridge site BB18.

This report and picture was forwarded to LKQ to see if they could correct the problem. They responded with the following solutions:

"LKQ on Rt16 has also found a area where the water that enters the property was not flowing into a swale properly. This was causing a large amount of runoff to flow directly through the property. This area has been corrected.

Rt16 is also installing stone and filter matt (by Mirafi) in a heavy traveled area on the property. This material has been use at other locations with great success."

P. Mahoney
LKQ

The troll measurements from each flow source including the downstream BB18 site were as follows:

Site Name---Time Stamp--Depth--Cond---Nitrate---ORP---pH----RDO-----Temp---Turbidity--------------------------------------11/20/2009-----(ft)---(uS Act)--(ppm)---(mv)----------(mg/L)------(F)------(NTU)

LKQ20 Flow--------10:12------0.331 --37.37------0.8-----181-----6.56---10.55-----54.91-----763.55

Above LKQ20------10:14------0.773---76.91------0.18---178-----6.02---13.33-----50.65--------0.3002

BB18----------------10:22-----1.315--64.55----0.53--168----6.36---15.25---51.97------77.55

The huge difference in turbidity (loss of clarity) indicates that the LKQ outflow is depositing very high levels of sediments into Browns Brook. EPA guidelines call for turbidity levels no greater than 20 NTU. Also, while we are not sure of the reasons, the differences in Nitrate and pH readings are significant differences between the two measurements. While conductivity levels differ, both are well below 100 uSem and can be considered as natural background levels. The lower Dissolved Oxygen (RDO), is consistent with the high sediment loading in the outflow source.

The Browns Brook 18 site (BB18), which is at the bridge where Browns Brook crosses under Gore Road, also reflected a high sediment loading from the LKQ outflow. The water at this site is a mix of the flow coming down the Browns Brook, with the flow coming from the Un-named Brook. This creates a greater volume of water flowing past the BB18 location resulting in a dilution of the flow. The Troll measurement indicated a Turbidity (loss of Clarity) reading at the BB18 site of 77.55 NTU. While this is the worst effect we have seen being caused by the cloudy water from the LKQ outflow pipe, the water from the LKQ source has always been cloudy but the flow rate was extremely low. Higher flows have been observed for much of this season with the highest being in the last 3 months. This has resulted in Turbidity readings at BB18 rising from the 2-4 NTU range to the latest 77.55NTU reading. The water flows into the lake in Smith Cove a short distance downstream from the BB18 site.

The Mine Brook 17, and Sucker Brook 16, sites tested normal. MB17 continued to measure a very low 15.9 uSem conductivity (salinity) reading, and SB16 showed a very slight elevation in Turbidity at 2.8 NTU likely caused by the increased runoff from the high morning rains. MB17 was used as the QC site this month which involves taking all readings at the site twice to provide a check of consistency of the data. All of the readings from these two sites were well within the normal levels. Like the first two sites, water flow levels at MB17 and SB16 were rated as high flow levels.

Going Forward

While the actual testing events are completed for the year, more work lies ahead. The following actions are yet to be completed:
1. The Troll needs to be prepared for off season storage which involves special treatment for some of the sensors to maintain their life expectancy. The RDO sensor tip must be replaced. A spare pH junction will be needed. It will not be installed until the present junction fails to calibrate but we should expect a failure during the 2010 testing period.
2. An inventory of equipment, materials, chemicals, etc. needs to be generated and provided to the lake association finance manager.
3. The final report for 2009 needs to be prepared and published. In past years this included presenting it to the Lake Association membership.
4. A meeting will be convened of the testers to review this year’s events and prepare suggestions for incorporation into the 2010 plan.

Preparatory Actions for the 2010 Season
1. Convene a meeting in the Feb timeframe to agree on any changes for the 2010 monitoring plan.
2. Create an addendum document to the 2008 QAAP that defines any changes from the QAPP and submit the 2010 plan to the Ma. State DEP.
3. Check out all equipment needed for the 2010 plan. Update batteries, and perform any needed maintenance.
4. Locate and install software updates for the Troll and Rugged Reader.
5. Update the field data sheets for the lake and streams.
6. Update the Water Sample Custody and Analysis results sheets.
7. Negotiate and finalize the contract with outside sample testing site for Chlorophyll, etc.
8. Establish a volunteer schedule and solicit volunteers for both lake and stream testing.

Al Huefner
82 Lakeside Ave
Webster, Ma. 01570
(H)508-461-9775 (New 6/20/09)
(C)847-971-8190
email: HuefnerAL@aol.com
website: http://lakeside.homeserver.com/ (5am-11pm EDT)

2009 OCTOBER WATER MONITORING SUMMARY

2009-11-03T06:43:00.000-08:00

The water testing for October was completed 10-20-09. The forms and data readings recorded during this test event can be found on the following web site: http://Lakeside.homeserver.com (5am-11pm EDT). The colorimeter results of the Phosphorous and Nitrate tests will be provided later as will the Chlorophyll test results from our external lab and the lake level data provide by Cranston Print. A copy of the summary report is included below.

October Water Testing Report

October Streams Testing Report

Testing of the streams was performed on Oct 16th. The calibration process for the Troll went without any issues. The weather was overcast with very light snow fall followed by clearing cold air. The air temperature was approximate 38 degrees during the test period. The weather leading up to the test day was cooler than normal with only light rainfall amounts. Water temperature across all streams was in the low to mid 40’s. The stream flows in general were light. One observation that was noted about this testing season is that none of the streams ran dry this summer as has happened with all but one of the streams in prior years.

A Troll snapshot of readings was taken at the runoff area at the corner of Lakeside Ave. and Wakefield Ave. Tests have been captured at this site for the whole summer, and this year, unlike past years, it ran all season and did not run dry. The readings at this site have been within normal ranges for all values tested. Slightly elevated turbidity readings were seen in the wettest part of the season but the readings were consistent with what might be expected given this is a runoff stream.

An unusual sighting of a flock of 6 ducks was observed in Sucker Brook above the bridge on Mine Brook Rd. Sucker Brook showed slightly elevated turbidity levels of 3.0 NTU which appeared to be related to algae growth. pH, Conductivity, Dissolved Oxygen(RDO), Nitrogen, Oxygen Reduction Potential (ORP), all tested normal for this site.

Mine Brook was very clear with a turbidity of 0.0 NTU. Conductivity (Salinity), measured very low which is excellent. pH, Conductivity, RDO, Nitrogen, and ORP values were all consistent with historic values from Mine Brook.

Browns Brook is tested in two places. At the test site LKQ20 near LKQ Corp., Browns Brook above the LKQ20 site was observed to be clear. The outflow from LKQ Corp. showed higher flow then is normally seen from that location. Additionally, the water that was flowing from this feeder was very brown indicating significant sediment in the water. The turbidity for this outflow tested at 167 NTU which is very high even for this site which usually tests high. All other test values showed as normal for the site.

Observations at the second Browns Brook site BB18 below the bridge at Gore Rd., indicated cloudy gray water color. This has never been observed at this site before. Turbidity tested at 12 NTU which is higher than any other test value recorded at the BB18 site over the last 5 years. All other values tested normal with RDO reading over 12 mg/L which indicates the water is well oxygenated. The team decided to try to isolate the source of the cloudy water at BB18. There is one addition feeder stream called Unnamed Brook that enters Browns Brook between LKQ20 and BB18. This feeder used to be tested in the past but testing was discontinued because it was felt that any issues in Unnamed Brook would show up in Browns Brook and could be isolated if issues arose. The team drove to the area where Browns Brook and Unnamed join and two members of the team walked in and observed that the water entering Browns Brook from Unnamed Brook was clear and the water coming down Browns Brook from the LKQ20 site was in-fact the source of all the cloudiness in the water as observed at the BB18 site.

October Lake Testing Report

Due to snowy weather, the lake testing was rescheduled from October 18th to the 20th. The weather on the rescheduled date was sunny, with little wind, and thus turned out to be a perfect day for testing. Rescheduling was only possible since we now have our own Troll 9500. In the past, the testing had to be performed sometimes in bad weather because the Troll had to be turned over to the next group that was sharing it. Testing was completed faster than usual because the wind and water was very calm which allowed instruments to settle quicker. All of the equipment worked well which also contributed to a shorter test time. The weather in the 48 hours prior to this set of water tests was windy, with snow and rain. The total rainfall across the prior 2 days was 1.5” of rainfall. The weather during testing was sunny, light winds, and the air temperature ranged from 51-54 degrees during the test period.

The lake water level was well below normal. It was indicated that the lake was drawn down to facilitate a wall repair and then the lack of rain has not yet replenished it. Special care has to be taken when navigating near the shallow areas of the lake. No thermo clines were found in any of the 3 ponds. Clarity of the water ranged from a viewable depth, using the Secchi Disk, of 13.6ft. in South Pond, 20.5ft. in Middle Pond, and 23.2ft. in North Pond. Water temperatures were consistently in the 50-52 degree range across all three ponds at all depths from the surface to the bottom. pH, Conductivity, and ORP, all indicated normal readings. Turbidity showed a very slight elevated level for the historic norms. All readings were less than 1 NTU but these values were somewhat higher than normal. This is likely due to the heavier than norm algae levels that existed due to the unusual weather this past summer. Dissolved Oxygen levels have fully recovered in the lake and now show readings in the 9-11 mg/L range at all depths from the surface to the bottom. A malfunction occurred with the Nitrate sensor causing all readings for North Pond to read off scale and should be discarded. It was likely due to the sensor getting into an error state when the Troll was brought out of sleep mode before performing the tests at North Pond. The sensor performed correctly when the Troll was again brought out of sleep mode to perform the post field tap water test after completing the lake testing. The readings displayed on the handheld appeared to be normal during the testing. The snapshot values the Troll recorded did not agree with the displayed values and were off scale. This issue will be discussed with the manufacturer of the Troll.

A light-green algae was observed on the bottom in several shallow areas. Milfoil was also observed growing at one of the shallow areas in North Pond. This shallow area is well away from the shore in the North East area of North Pond and likely has never been treated. Several of the testers reported seeing similar algae near their docks. A blue green colored algae was observed near Ernie Pinot’s dock.

The October Colorimeter testing of the water samples for Phosphorus and Nitrates have been completed and the results are now on the web site at URL: http://Lakeside.homeserver.com (5am-11pm EDT)

The Lake level charts and the external lab results for Chlorophyll will be added when they become available.

November Plans

October was the last month for testing on the lake. We are planning to test the streams in November, weather permitting.

Al Huefner
82 Lakeside Ave
Webster, Ma. 01570
(H)508-461-9775 (New 6/20/09)
(C)847-971-8190
email: HuefnerAL@aol.com
website: http://Lakeside.homeserver.com (5am-11pm EDT)

September 2009 Lake Levels

2009-10-09T10:12:00.000-07:00

MORE INFO ON BRYOZOA

2009-09-23T06:59:00.000-07:00

The organism referred to a a Bryozoan is neither a plant nor a sponge. It belongs to a relatively simple phylum of animals known as Ectoprocta, once known as, and still sometimes called Bryozoa. They are colonial organisms made up from large numbers of small, usually .5mm or less, individual animals. The organism found in the lake appears to a species called Pectinatella magnifica. It can be a large, half a meter in diameter, organism composed of a mass of gel substance covered with many thousands of the zooids, or individual animals. They use a tiny fan structure to collect and feed upon single cell plants and animals and bacteria. They are found in clean waters and are not harmful or dangerous. I can remember identifying them back in the 1970's both in north pond and south pond shallow, weedy waters of Webster Lake and the French River. They are not new, only uncommon in the lake. If increasing numbers are now seen, it may be a function of increasing turbidity, Pectinella favors lower light conditions and unpolluted waters. I see them occasionally while kayaking the French river, usually in shaded, shallow waters attached to branches. They certainly are unusual looking critters.I have seen and identified a similar Ectoproctan called Cristatella in the crystal clear waters of Mine brook while doing nutrient monitoring with the French River Connection a few years ago. It looks like a thick flat 3 inch worm made of transparent jello. Again, its a harmless animal found in clean waters.

The attached website from UMass may be helpful.http://www.bio.umass.edu/biology/conn.river/bryozoa.html

Tom Ryzewski

2009 SEPTEMBER WATER TESTING SUMMARY

2009-09-23T06:53:00.001-07:00

Water testing for the month of September was performed on Sept. 18th for the streams and Sept. 20th for the lake. The weather in the prior few days before testing was in the 50’s over night rising to the mid 70s during the day will little rain and periods of cloudiness.
Streams Testing Summary
The streams showed visually clear water. Some scum was observed in a couple of areas. The troll readings showed slightly elevated turbidity readings in the 1-2 NTU range but well below the visible level of 5 NTU. Visual sightings of suds like floating patches suggest that some algae levels were present at the test sites.
The Colorimeter tests showed slightly elevated Nitrate levels which were also confirmed by the troll readings. pH levels were normal, and Dissolved oxygen levels were very good in the 9-10mg/L range.
Air temperature at the time of test was in the low 60 deg F range. Stream water temperatures were in the 51-55 deg F range. Conductivity (measure of salinity) was normal for most areas except the test point by LKQ. Since the LKQ outflow was not running, a test was taken in the main Browns Brook stream just above the junction at the LKQ outflow point. This stream area tested at a high of 238uSem which would reflect influences above LKQ. Mine Brook tested the lowest at 20 uSem (100+ suggests human influence). All other streams tested between 20 and 125 uSem.
Aquatic life observations included mostly water bugs which seemed to be more plentiful than usual.
Lake Testing Summary
The air temperature at the time of lake testing was in the low 60s with sunny weather. The water temperature of the lake measured in the 66-67 degree range which is more than 10 degrees higher than the streams. The water had a dark brownish-green appearance to it and the suds patches associate with algae was also observed on the surface. The lake appeared to be in the process of turning over. This observation is also supported by Dissolved Oxygen readings from the Troll that show the oxygen levels from top to bottom all are in the 7-8mg/L range.
No thermocline layer was found in South and Middle pond which is normally happens this time of year. North pond did show a thermocline at 31-32ft and low Dissolved Oxygen levels were seen below the thermocline. Due to an equipment failure of the Van Dorn sample grabber, we were unable to capture a Colorimeter sample of the thermocline.
Secchi disk measurements were lower than usual, ranging from 8.6ft for South Pond, 17ft for Middle Pond, and 14.8ft for North Pond. These lower readings are also reflected in the Troll Turbidity readings which show lower water clarity than normal especially in South Pond. The change in water color and lower visibility are likely due to water turning over and bringing up algae which due to climate conditions for much of this summer, has been more prevalent than in past years.
Phosphors, Nitrates, from the Colorimeter tests, and pH, and Conductivity (Salinity) from the Troll readings, all tested in the normal range.
Summary
This season has seen much cooler and wet weather than normal. This different weather led to much more algae being seen and increased the number of reports and questions as a result. A new aquatic plant was discovered this summer. It is named Bryozoan, but is more often referred to as “white coral”. This plant requires very clean water to grow. It is not a threat to the lake and is a sign of the water quality in the lake. A picture and write up about this plant can be seen by going to the following URL: https://lakeside.homeserver.com/ and click on “Lake Data and Information” and on the next screen, select “aquatic plants identification” It is number 11 in the list.
While this has been a difficult season for the lake, the good news is that it is quickly starting to get back to normal. My concern about elevated levels of Chlorophyll and bacteria is past. The lake is starting to clear up and will likely be completely back to normal when we do the October tests.
All of the raw data and forms created during this testing event, with the exception of the Microbac external lab tests for the September Chlorophyll test results are now available on line and can be viewed by going to the following URL: https://lakeside.homeserver.com/ and click on “Lake Data and Information” and on the next screen click on “2009 Water Test Data”. The next screen lists all test data collected in 2009. Just click on the name of the information you want to look at and that document will open.

Al Huefner

2009 AUGUST WATER TESTING SUMMARY

2009-09-20T06:56:00.000-07:00

The testing of the streams for August was completed on Wednesday, August 12th. The testing of the lake was completed on Friday, August 14th.
We experienced an equipment issues with the In-Situ Troll 9500 MP this month. A valid but marginal calibration result on the RDO dissolved oxygen sensor is being worked with the manufacturers support team. Indications are that the sensor is calibrating correctly and the test results are accurate, but the reader has a software issue in converting and displaying the calibration data. In-Situ has committed to provide a software update for the hand held unit to correct this issue.
A second issue began showing up last month when the Conductivity sensor calibration returned marginal calibration parameters. This month, a new bottle of calibration solution was used and the sensor failed calibration. The cleaning procedure requested by In-Situ support also did not correct the problem. As a result, the Conductivity readings for this month are slightly lower than the correct reading. In-Situ estimates the results will be with 5% of their true value. In-Situ is sending a replacement sensor which will arrive next week. A test of the calibration solution will be done to validate the results.
This month showed some significantly different test results then have ever be observed. Clearly the unusual weather pattern we have experience this spring and summer is a major factor. Many people have raised issues of sightings of very unusual matter and objects in the water. Many of these observations seem to be related to elevated levels of algae that have existed in the lake for much of the summer.
Streams Testing
The streams testing on Wednesday showed that all streams and major runoff area continue to flow. In past years one or more of the streams would be dry at this point and the wet weather runoff flows would also be dried up. That has not been the case this year and the streams are still showing moderate flow rate levels.
Turbidity and Nitrate levels tested higher in the streams than has normally been seen. This is most likely due to the run off flushing more matter into the streams. The higher Nitrate levels are likely caused by the prolonged algae growth this season. A lot of extra sediment is being observed from algae in all stages of it life cycle resulting in reported odors and green and brown sediment that is decomposing. Most other readings in the streams reflect the norms for the season. Water temps are slightly lower this year again related to the cooler summer and higher flow rates.
An unusual condition was observed at testing location at LKQ20. The surface of the water contained a brown foam type matter most likely the result of algae but observer comments ranged from oil foam, sewage, and algae. LKQ was asked by the town to have it tested to verify what it is.
Lake Testing
During the last few weeks, many reports of sightings were raised from around the lake. Sightings included:
1. Large white colored melon sized round objects that were hard, had a leathery looking surface with a lot of raised bumps on the surface.
2. Green balls which appear to be from the very hard rain and high winds knocking the nearly ripe heads off the lily pad stems.
3. Flakes in the water of various colors from grey, to green, and brown, and brown foam. These most likely are from the high levels of algae in the water.
The results for the July Chlorophyll-a samples tested by Microbac labs that come back a few weeks after the sample is taken, showed the Chlorophyll-a level in the water in mid July was nearly 3 mg/liter vs. the June results of .06 mg/liter. These significantly elevated levels of Chlorophyll-a, indicates high levels of algae in the water. The currently available results for August, also indicates that unlike prior years where an algae bloom was observed, lasting for 1-2 weeks and was gone. This year, the data suggests that the algae bloom formed in the early July timeframe and has lasted for the 6 week period through the tests this week. The colorimeter test person reported elevated nitrate levels and a foul smell to the water samples from the bottom on North Pond. This combination suggests that the some of the algae sediment is decomposing on the bottom resulting in higher nitrate readings and decomposition gas odors.
The troll instrument readings also indicate a very different water quality picture then has been seen in prior years. The nitrate sensor normally yields readings of .5-.8 ppm(parts per million). The readings this month are in the 1.5-7.0 ppm range which has never been seen before in the lake. The EPA safe limit is 10 ppm. It should be noted that the higher nitrate readings were from the surface down to the thermal barrier which was observed in the 18-20 ft depth range for all 3 ponds this month. This suggests the algae bloom is still active. Turbidity(clarity) readings, showed higher levels of turbidity at all depths with readings below the thermal barrier being higher than the readings above the thermal barrier. Turbidity readings above the thermal barrier were in the 1-1.5 NTU range for Middle and North Ponds vs. historic values of .1-.4 NTU. Values below the thermal barrier were in the 2.0 NTU range for Middle and North Ponds. South Pond readings were higher being in the 2-3 NTU range.
RDO(dissolved oxygen), and ORP(oxygen reduction potential), readings are also 10-20% lower than is normally seen. These lower values are likely due to the prolonged algae bloom which would tend to consume more oxygen.
The colorimeter tests showed normal phosphorous readings in all tests, but the bottom sample for North Pond and the sample from Sucker Brook showed elevated levels of Nitrates. The test person also indicated that the sample from the bottom of North Pond had a foul smell which was likely associated with decomposing algae sediment from the area near the bottom.
The continued significant flow rates of the streams are likely bringing more nutrients into the lake this season than would be the case in a normal year. Along with the weather, the extended flow of the streams may be supporting the prolonged algae bloom we are observing in the lake this season.
Conclusions
The test data results this month are very different than anything we have seen over the 5 years of testing. For the WLA test team, this is unchartered territory. We believe and hope that these conditions are temporary and that they do not produce long term impact to the lake. We will be talking with our expert contacts about these conditions and the short and long term impact they may have to the lake’s eco system and its marine life. The data might suggest that the Webster water supply be monitored closely for increases in bacteria, and nitrate levels.

BRYOZOAN

2009-08-28T06:32:00.000-07:00

Over the last couple of weeks people have observed a new species in the Lake and have been concerned. I went out and got a sample from South Pond and had a biologist from Aquatic Control Technology identify it. It is called Bryozoan and is in the sponge family although some people call it “fresh water coral”, or in some cases “moss”. It is a clear hard jelly colony type structure that grows on dead objects such as branches, mooring ropes, dock legs, etc. The colony feeds by filtering the water. It grows in warm water, needs good light and clean water to grow. It is no danger to the Lake and a good indicator of our water quality. The underwater branch I found this specimen attached to had about 6 other colonies about the size of cabbages on it. The sample I took is about the size of a fist.

Anyone want to adopt him? At our last Board Meeting he was a real hit. Zoë has a great personality and is very quiet, although he smells like a pickle since I had to put him in an old pickle jar. A quick bath should get him back to normal smelling Bryozoan.

JULY 2009 WATER QUALITY SUMMARY

2009-07-18T07:20:00.000-07:00

The 2009 July water tests were completed on the 15th for the streams and the 17th for the lake. These tests followed a three week period of well above average rain fall. This wet weather increased the stream flows, raised the lake by approximately 1ft., and affected the water test readings for the month. When tested this week, the flows had slowed and the lake has started to drop in level as the dam outflow now surpasses the stream inflow rate. This create an unusual set of readings because the top layer of water above thermal layer has been refreshed by the rain and wet weather. A brief summary follows for each characteristic tested:

Conductivity – (a measure of salinity) – While all readings were in the normal range, North Pond yielded readings about 40% higher than Middle and South Pond. The streams did not reflect higher readings when tested this week but may have been the source of the increased salinity level over the past few weeks when they were flowing at much higher rates then was present the day they were tested.

Nitrates – (Indication of nutrient loading) - Nitrates showed elevated levels from the surface down to the thermal barrier which was around 18-20 ft across the 3 ponds for this month’s test. The Troll sensor showed higher readings than the Colorimeter tests but both showed elevated Nitrate levels in the upper layer of water in the lake. The streams tested low with the exception of the runoff stream that enters the lake at the corner of Wakefield and Lakeside Ave which is the location at which it was tested.

Dissolved Oxygen (DO) – DO levels above the thermal barrier yielded fairly good readings in the 8mg/L range but dropped to virtually zero quickly below the thermal barrier. The drop from normal levels to near zero level is sharp and not normally seen as dramatic at this. It may be due to the upper layer being refreshed with rain, stream, and runoff water, over the last few weeks, but below the thermal barrier it has not been refreshed. Oxygen levels are near zero from 20ft of depth on down which again is highly unusual. This suggest that an algae bloom is occurring below the thermal barrier but has been truncated above the thermal barrier due to the wet weather causing low DO levels. DO readings in all the streams were very good.

Oxygen Reduction Potential (ORP) – ORP measures the water’s ability to store electrical energy which is a direct indication of the waters ability to oxidize nutrients, impurities, and bacteria. ORP readings showed good values from the surface down to the thermal barrier. Below the thermal barrier, ORP levels dropped rapidly. The rapid decline of DO and ORP readings below the thermal layer suggest that an algae bloom exists below the thermal barrier. ORP levels in the streams were good with the exception of Brown Brook which enters Smith Cove near Indian Ranch. It is unclear why Browns showed these lower readings.

pH – pH readings in the streams were all normal. In the lake, pH readings from the surface down to the thermal barrier showed elevated readings. Normal pH readings are 6.5-6.7. All three ponds showed elevated pH readings in the 7.0–7.15 range in the top layer from the surface down to the thermal barrier. Below the thermal barrier, pH readings tested normal. The higher pH readings in the top layer are likely due to the wet weather.

Temperature – The water is warming up. In the last month, the water temps have risen from the 65-67 degree range to 74-75 degrees near the surface. The temperature is above 70 degrees down the thermal barrier which was approximately 18ft in depth. Below the thermal barrier, the temperature drops steadily with temperatures at the bottom of South and Middle pond reading approximately 60 degrees and the deeper North pond readings were 52 degrees.

Phosphorus – Phosphorus levels tested normal in both the streams and the lake. Water samples for Phosphorus are taken from each of the streams and in each of the 3 ponds at the surface, at the thermal barrier, and at the bottom. This test is performed on the collected samples using Colorimeter equipment that used chemical reduction to free any Phosphorus that is bound in other solids. Optical readings are then taken and compared with a reference standard to yield the readings for Total Phosphorus.

Chlorophyll-a – (a indicator of algae content) - Water samples are collected for Chlorophyll-a. Results are not available for this test since samples are sent to Microbac labs in Worcester and take a couple of weeks to get the results back.

JUNE 2009 WEBSTER LAKE WATER QUALITY MONITORING REPORT

2009-06-20T13:25:00.000-07:00

Water testing for the month of June has been completed in both the streams and the lake. Overall the water quality continues to test in the very good to excellent category. Turbidity(clarity), Dissolved Oxygen), and ORP(oxidation reduction potential), levels tested slightly tested slightly worst than historic averages.

These differences are most probably due to the cooler dryer spring we have had. The lower flow from the streams results in less lake water being replaced with fresh water from the streams. Lower Oxygen levels leave more un-oxidized nutrients in the water which supports algae and weed formation.

Unless July is a wet month, the lake is likely to experience significant weed and algae growth this summer. With lower Oxygen, and ORP, levels present as we enter the warm months, when at least 2 of the 3 streams often stop flowing all together, the nutrient loading in the water is likely to remain higher and support greater algae and weed growth then in a year with a wet spring. The slightly higher readings of Turbidity in the June test results suggest that algae growth has started.

This month, we continued to take readings from the runoff stream located at the corner of Lakeside and Wakefield Ave. The conductivity (salinity) reading at this site at a reading of 241 uSems, tested 50% higher than then any of the other feeder streams or the lake itself. In contrast the lowers reading was 18 uSems, in the Mine Brook feeder stream. Readings above 100 suggest manmade causes.

Water temperatures of the lake are rising and all 3 ponds measured in the 67-68F area down to at least 10-12 feet. The water column is beginning to stratify and a thermal layer or thermo cline was observed in all three ponds in the 18-24ft depth range. Temperatures at the bottom were, 52F in North Pond, 61F in Middle Pond, and 57F in South Pond. DO (dissolved oxygen) readings dropped below the 4mg/L level in North Pond and Middle Pond at 22-24ft, and, in South Pond which has no direct feeder stream, at 16-18ft. The 4mg/L level is considered the level of oxygen below which fish, and most other larger marine life, cannot be sustained for extended periods. Bass do not do well below 6mg/L.

As an experiment this month, the testing team decided to take readings in the pond on the entrance road of the Sportsman’s club. This pond is the primary feeder to Sucker Brook. The water travels down-stream for nearly 2 miles from that pond. We tested the water near the overflow where it exits the pond. A comparison of the readings taken at the pond, compared with those taken from Sucker Brook shortly before it enters the lake, provides some interesting observations:

Item	Club Pond	Sucker Brook	Observation
Temp	69.3	51.8	VG, Shade cools water
Conductivity	93	113	Small Increase in Salinity
pH	5.63	6.30	Good-6.3 is less acidic
ORP	238	192	Marginal, Lower Inpurities Oxidation

*Please note that while the Club pond is a primary feeder to Sucker Brook, it is not the only source.

APRIL 2009 WEBSTER LAKE WATER QUALITY MONITORING REPORT

2009-04-23T13:26:00.001-07:00

April 19, 2009

Today’s lake water quality monitoring event was very successfully.

We were pleased to have two new volunteers, Nick Buehler, and Steve Washburn join Ray & Jeanie Travis, Ed Wentland, Gloria Ricker, Ernie Benoit, an myself today. The weather was fresh and crisp. The caution to dress warmly was for the most part headed by everyone. It was a fun day. Jeanie passed her Captian’s test and successfully put the boat over the site locations on the first attempt.

I have attached a four documents. They are:

1. The Colorimeter test results for Phosphorus, and Nitrate for the Stream locations that was done Friday and the Lake which Gloria completed on board the boat today.
2. The Chain Of Custody forms completed by Jeanie for the Chlorophyll-a analysis that are sent to Microbac labs in Marlboro. This test monitors bacteria levels in the water.
3. The Lake field data sheets that record observations, temp and wind readings, water clarity measurements using the Secchi disk.
4. The Troll 9500 measurements at 2 ft depth increments for Temp, Conductivity, Turbidity, Dissolved Oxygen, pH, Nitrogen, and Oxidation Reduction Potential.

The water tests show the water condition to be excellent. The colorimeter tests show that the Phosphorus and Nitrate levels continue to show the water condition as excellent.

A new record was set for the Secchi disk test for water clarity. North Pond took the honors with a 4 year record sighting depth of 26 ft. This compares to South Pond at 11.6 ft, and Middle Pond at 16.6 ft. The fact that two of the 3 major feeders to the lake enter in North Pond not far from the deepest location at which we test.

Both the water temp and air temps measured around 50 degrees. Because it is early in the season, no thermo cline was found (the thermo cline is the thermal barrier that forms as the water warms up and results in the top layer being much warmer than the layer below the thermo cline.

There were no surprises in the Troll measurements across the range of measurements. The first entry is a tap water test that is performed before going out and this test is again at the end and shows as the last entry in the spread sheet.

2008 WLA Water Quality Monitoring Final Report Commentary

2009-03-21T09:39:00.000-07:00

Introduction

This document references information contained in the formal slide presentation of the 2008 Final Webster Lake Water Quality Monitoring Report and must be used in conjunction with the information displayed in the slides and the supporting database.

Per the QAPP, the 2008 plan continued the monitoring activities at the 3 deepest pond locations in 2 ft depth increments along with monitoring five feeder stream locations. In addition to these continued activities, the 2008 plan added the testing of 12 cove locations around the lake using a nitrate sensor on the Troll 9500. This latter activity was done on a trial basis to locate potential hot spots in the lake shoreline areas.

While the size of the presentation in terms of time to present did not allow comparisons to prior years, the 2008 data was reviewed against the historic average for the prior 3 years and the most significant deviation from the historic average is discussed in this document. While 3 prior years is significant, it is too short a period to be able to identify any trends in the data.

Discussion of findings for the 2008 monitoring season

Temperature
Water temperatures in both the lakes and stream followed historic averages. It is believed that any differences can be explained by weather patterns. The unusually high rainfall amounts in July coupled with a warm July and August continued to show it impact on water temperatures well into September resulting in the water temperatures at depth in September running above the historic averages. Historically the thermo cline in September was at approximately 26 ft in depth. This September, that depth was approximately 32 ft.

Dissolved Oxygen
DO levels reached their lowest levels in July and August where DO began dropping of sharply from their upper layer levels of approximately 8mg/l at 14 ft and dropping below 2mg/l beyond 24 ft and showing near 0mg/l beyond 30 ft. The stress levels on the lake were demonstrated by how shallow the depth at which DO levels sharply dropped off. This suggests that the combination of temperature and nutrient loading are overpowering the lake in the warmest months.

The streams showed good levels of DO throughout the season remaining mostly above 8mg/L with the exception of July where Sucker and Browns brooks dropped down close to 5mg/L.

Oxygen Reduction Potential (ORP)
ORP is turning out to be one of the top indicators of water quality. ORP indicated the ability of the water to oxidize or consume pollutants including bacteria, algae, and other nutrients in the water. The ORP readings for the lake indicated that the warm season took its toll on water quality. ORP showed “Out of balance” for August and October at all depth levels with values in August dropping into the “Harmful to fish” levels.

OPR values for the streams remained in the “in balance” or “has reserve capacity” with the exception of Sucker Brook which tested “out of balance” in June.

pH
All lake readings for the season remained in the good range through the season

The streams tested in the “good” range except for October where Sucker, Mine, and Brooks all tested in the “elevated salts” range.

Salinity (Conductivity)
All lake tests indicated conductivity levels below 200 uS/cm for the all tests throughout the season. July showed the highest readings most likely caused by the nearly 6 inches of rain across a 4 day period in the month. This caused high flow levels in the streams for a short period of time likely carrying with it a higher concentration of salt from the stream banks and feeder tributaries.

Most stream values tested at less than 100 uS/cm for all months except July where Sucker, LKQ Outflow, and Un-Named Brook indicated values in the 220 to 260 uS/cm range.

Clarity (Turbidity)
The reading this season provide a surprise behavior in the lake. Turbidity remained below 105 NTU for all months with the exception of August. (Spikes in Sept and Oct are to be ignored because they are the result of averaging S1, M1, and N1 water columns, readings into a single average and those spikes are due to S1, and M1 bottom readings) However, August shows that Turbidity above the thermo cline was normal while readings below the thermo cline showed elevated turbidity levels. In studying the possible reason for this, my conclusion is that it is probable related to the heavy rain influx in July. ORP levels in August suggest that ORP above the thermo cline remained high enough to keep the algae bloom from forming but below the thermo cline where it drops sharply, the algae was able to overpower the oxygen and was able to form a bloom. The gradual improvement of Turbidity values as depth increased suggest that even the algae bloom was constrained from lack of light and oxygen.

Turbidity readings in the streams showed that Turbidity reading followed runoff volumes increasing slightly in the months where higher runoff levels were present. The one exception is the LQK outflow where readings for most of the season were very high. While the volume of water from the LKQ runoff source is very low, the readings indicate that there is a runoff issue from this source.

Chlorophyll-A
This parameter is only tested in the lake water. All tests for the 2008 season showed all readings to be below 3.5 mg/m3 well within the “good” 0-5mg/m3 range.

Phosphorus
Total P for all lake samples tested in the “good” range and all results were between .01-.022 mg/L.

Total P for streams showed Phosphorus loading which varied across the season. The readings showed the following results:
Scale (mg/L) April May June July Aug Sep
Un-Named Fair VG VG Fair Fair Fair
Browns Good Fair Fair Fair Fair Fair
Mine Fair VG VG Fair Fair Fair
Sucker Fair VG VG Fair Fair VG
Fair(.03-.06 mg/L) Good(.01-.03mg/L) Very Good(VG)(<.01mg/L)
These results suggest that Phosphorus loading in the lake is being contributed to by the feeder streams. Browns Brook shows a different performance line across the season than the other streams which suggests there are unique influences at play that affect the readings from Browns

Nitrates
A nitrate sensor was added to the Troll 9500 for the 2008 season. The sensor’s accuracy is rated at +/-10%. Calibration of this sensor has to be done immediately before testing is done. The purpose of adding the sensor was to perform “go/no go” testing of selected shoreline areas to look for potential problem spots. Since Nitrates samples for the 3 deep spot locations were also performed by external lab testing and with our own Colorimeters, there were solid references to compare the results against. Readings from the Troll taken at the 3 deep spots were compared with the lab results and indicated the Troll sensor was operating within it accuracy specifications.

The lake deep spot readings yielded surprising results. Readings for the cold water months of May and June indicated Nitrate levels that were pretty much in the “background” range. As the water warmed throughout the season, values increased as would be expected. However, as water warmed all the way to the bottom and eliminated the thermo cline, the readings for Nitrate values spiked up from <1.0ppm to nearly 2.5ppm.

Testing in the cove areas did not reveal any significant issues. The power point presentation includes a map with the 12 cove locations marked. These locations were selected by the water quality monitoring team with addition inputs from lake association members. The selected locations included the following location: IDs letters S, M, N indicate South Pond, Middle Pond, and North Ponds
ID Location Rational For Testing
S2 Below State Boat Ramp Heavily weeded
S3 At Wakefield Ave Ent Left Cove Heavily weeded
S4 At Wakefield Ave Ent Right Cove Weeds/Runoff Source
S5 Far southwest part of pond Heavily weeded
S6 Cove to the east of ent. to mid pond Heavily weeded
M2 Far end of sailing club cove Heavily weeded
M3 East shore in smith cove near Indian Ranch Browns Brook Outflow
M4 Cove- west side just south of ent. to N pond Weeds/runoff
M5 West shore in corner by I-395 Runoff from I-395
M6 Cove inside Action Marine-near west shore Runoff
M7 Outflow pipe in wall above Act Marine Ent Runoff
N2 Channel below Rt 16 bridge Sucker/ Mine Outflow
The results show slightly elevated readings over those taken at the deep spot locations. South pond showed slightly elevated levels over Middle and North ponds. This seems to be consistent with lower ORP levels in South pond possibly as a result of not having any constant feeder streams into South Pond. North Pond which has two feeder streams had the best readings. Again the differences were small but consistent across the testing period.

One other notable worthy observation is that the two coves located near the corner of Wakefield and Lakeside Ave showed the highest readings across the seasons. This is the location that is currently on the list of shovel ready projects for possible stimulus money which would implement a sediment removal solution for the runoff that travels through several neighborhoods and along Lakeside Ave before entering the lake in the cove labeled with the ID S4 in this report. This runoff source is aggressive in wet weather but stops running in dry weather.

The streams contributed to Nitrate loading in the lake with the Sucker and Mine yielding readings of 2.5-3.5ppm for the months of July and August. This is to be contrasted to the other streams which tested below 1.0ppm for the season.

Major Current Actions
• Weed Treatments (chemical controls currently being used)
• Arrest sediment in runoff using catch basins, holding ponds, grass swales, etc(being done as funding allows)
• Septic system disconnects
• Awareness and education programs

Additional Things That Would Help
• Removal of weeds/leaves deposited on the shoreline
• Manage disturbances in the watershed differently than other areas (erosion, construction, paving runoffs, brush/leaves, sewers, logging, road sand and salts, fertilizers, etc)
• Weed Harvesting or chemical treatment of native weeds. When the invasive weeds are eliminated, the native weeds feed on the excessive sediments in the lake and take over causing the same negative impact on water quality that invasive weeds were causing.
• Any inactive watershed construction should be required to seed the site with grass to prevent erosion and reduce runoff
• Require that finished watershed lots be seeded as part of the build phase and not left unplanted.
• Do not allow tree removal or top soil to be stripped on watershed lots until the active construction phase of a lot proceeds.
• Do not allow any tree removal for construction, logging, etc. where the trees provide shade to the steams and their feeding tributaries. Some stream go dry for a couple months but they remain streams for the other 9-10 months out of the year and if construction or logging are approved, impact to the lake results for that action.
• Do not allow mass clearing of watershed building lots, keep as many trees as possible and allow removal of only what is needed.
• Require that site runoff conforms to good watershed practices both during construction and in the finished plan.
• Require that finished sites include catch basins, grass swales, etc. to arrest sediments before they enter feeder streams or feed directly into the lake.
• Dredging the lake in areas of major sediment buildup would be of major help. It is the only way to reverse damage already done. As long as the sediment is there, the weeds have fertilizer and will continue to overpower the lakes ability to oxidize the ongoing nutrient loading.
• Implement a drain down plan. Experts say that if done correctly, it is the most effective method to control and destroy weeds. (Ideal is said to a 6-7 ft drain down from Oct to Mid-Jan followed by a rapid refill) This causes the weeds to dry out and be killed by the deep frost in January and then the rapid refill causes the dead material to be pulled loose and floated.) Less aggressive plans have also produced positive results.

Lake & Stream Monitoring Procedures

2009-03-21T01:43:00.000-07:00

This explains what the Water Quality Team does, how easy it is to accomplish, while requiring just a bit of time. It is important we monitor the streams because the brooks entering the lake are the most likely places to catch any problems that may occur. Please consider joining us.
If there are any questions please don't hesitate to contact either Al Huefner or Ernie Benoit.

Al Huefner
82 Lakeside Ave
Webster, Ma 01570
(H) 1-508-275-9359
(C) 1-847-971-8190
email: HuefnerAl@aol.com

Ernie Benoit
86 Point Breeze Road
Webster, MA 01570
508-943-8804 Home
774-230-3138 Cell
email: ernieb@charter.net

To help answer questions for anyone who in interested in joining, we have prepared the brief summary below of what the activities are, how long it takes, and where we meet. We do two water quality monitoring activities:

Streams and LakeStreams Monitoring

Stream Testing - We meet at 9:45 at the far end of the Lodge Restaurant parking lot on Route 16 heading east toward Douglas. The Lodge is before you get to Indian Ranch. We check our gear and then go to the location in one or two vehicles. At the testing locations, the activities are as follows:

1. Fill out the observation sheet of visual sightings. This is a check the appropriate boxes activity using a clip board

2. Fill water sample bottles for later analysis by the Colorimeter analysis team for Nitrate and Phosphorus

3. Record sensor readings using the electronic instrument call the Troll 9500 made by In-Situ Corp.

4. Record water level readings for the staff gauges located at some sites

5. Record wind speed, air temp, and direction information using handheld instrument.We do this at 4-6 Streams locations. The total time is about 1.5-2 hr to complete all sites. All locations are near roads.

In the spring, we do take boots along in case we need them.

Lake Monitoring - The lake monitoring is a different process. We test at the deepest spot in each of the 3 ponds. We go out by boat and use a GPS instrument to position over the deep spot where we then anchor the boat. We then perform the following:

1. Fill out observation sheets of visual sightings. This is a check the appropriate box activity using a clip board.

2. Fill water sample bottles for later Nitrate, Phosphorus, and Chlorophyll-a by Colorimeter/External Lab.

3. Record sensor readings using the Troll at increments of 2 ft in depth and write down temps at each depth looking for the thermo cline(the thermal layer)

4. Use the Van Dorn sampler to capture water samples just below the thermo cline and near the bottom for Phosphorus testing.

5. Using the Secchi disk and aqua scope, perform clarity depth test.

6. Record wind speed, air temp, and direction information using handheld instrument. No training is required.

You will learn by doing the tasks guided by an experienced person each step of the way. Just come to have fun. For lake testing, we use Ray and Jeannie Travis’s boat and we leave from their house located at the far end of Mark Ave (last house on the right) at 10:45 am on the test dates. Total time runs between 2-2.5 hours to complete all three locations. If the weather does not co-operate, we will reschedule the date and we try to notify people in advance to save you from a false start.

WLA WEBSITE

2009-03-20T13:55:00.000-07:00

Click Here to go to the WLA Website