Truesdale Lake  

South Salem, New York

November 13, 2019
by rob

Drawdown: Report 9

Summary: Both 12″ siphons shut down: the west 12” on Tuesday night 11/5/19 and the east 12” on Wednesday night 11/6/19. The 6” siphon was the only one flowing most of this week and it was able maintain the lake level following 0.3″ rainfall with a 2 ½” lake level rise. Lake Gauge started at -3.0′ target depth and ended the week rising to -2.8′. Continue reading

November 6, 2019
by rob

Drawdown: Report 8

Summary: Harold Ossher’s conclusion, following his evaluation of watershed research and flow data collected, was to use two 12” siphons plus the one prototype 6” siphon. This proved sufficient to stay ahead of this year’s wet October 8.2” rainfall total. (Average rainfall for October over the last three years is 7.7″ where OCT 2018 was 4.6” and OCT 2017 was 10.3″.) Continue reading

October 21, 2019
by rob
Comments Off on Drawdown: Report 6

Drawdown: Report 6

Rain from the strong nor’easter bombogenesis (at least 24 millibar drop within 24 hours) began at 2 pm Wednesday 10/16/19 and ended just after midnight where we received 3.34”of rain. On Thursday 10/17/19, we received a small amount of wrap-around moisture with an additional 0.04” or rain. (more…) Continue reading

September 28, 2019
by rob
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Drawdown: Report 3

The lake level increased 4” since the target depth was reached on Sunday 9/22/19. So one week later, James Gorman and crew correctly restarted the two 12” siphons to keep the drawdown ahead of the rain coming in October. (more…) Continue reading