September 15, 2020
by rob
Comments Off on Truesdale Lake Drawdown 2020-21
As a part of our continuing lake management plan, we will be drawing down the lake level again this fall to help control weed growth in the spring. Pond & Lake Connection will begin installing the siphons at the dam … Continue reading
March 1, 2020
by rob
Comments Off on Drawdown Report 13
January 25, 2020 marked the last day of drawdown target depth – where the lake’s level, in its fifth cycle, was three feet below the spillway ramp. The water began to rise after both 12†siphons had shut themselves down. The west siphon shut down early due to an enormous mass of fishing line and a fishing rod around tree limbs wedged against and inside the intake. See photos at the end of this report.
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January 14, 2020
by rob
Comments Off on Drawdown Report 12
Today, with all siphons flowing, the lake level is 2.3 feet below the spillway ramp and descending. The lake froze completely on December 20th with ice up to three inches thick and 80% of the lake was melted by January 7th, allowing for a much cleaner fifth and final descent to target depth. If we are lucky, the lake will again freeze in January when the siphons shut down with lake level at three feet below the spillway. Continue reading
December 28, 2019
by rob
Comments Off on Drawdown: Report 11A
Update to the Report 11 including more rainfall data for December 2019. Continue reading
December 23, 2019
by rob
Comments Off on Drawdown: Report 11
Summary: This four-week report involved so many environmental changes that I had to wait to complete it until a break in the weather – the dry spell we’re experiencing – now in its third day. We received so much rain this month that the lake level rose 38 inches after receiving five inches of rain and Snow/Ice Water Equivalent (SWE), even with all siphons flowing much of that time. Continue reading
November 26, 2019
by rob
Comments Off on Drawdown: Report 10
The 6†siphon continued flowing during this last two week period and we requested that P&LC restart both 12″ siphons.
On Wednesday 11/20, a Lake Planning Group Meeting was held with John Bergstrom, Robert & Susan Brown, Rob Cummings, Sue Enos, Scot Evans, Lara Gorton, Stephen Macaluso, and Harold Ossher attending. Continue reading
November 18, 2019
by rob
Comments Off on Drawdown: Aerial Survey Lake Perimeter
A friend lent me his drone for an aerial survey of the lake as it is now during the drawdown. I have posted below some of the photos from November 15 when the lake was half frozen on the surface. … Continue reading
November 13, 2019
by rob
Comments Off on 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
Comments Off on 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 29, 2019
by rob
Comments Off on Drawdown: Report 7
Summary: Sunday 10/27/19 brought us the remnants of Tropical Storm OLGA, where we received 1.34 inches of rain in the twelve hours between 4 am and 4 pm. (more…) Continue reading