APRIL 2009 WEBSTER LAKE WATER QUALITY MONITORING REPORT

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.