Dam Logs

Below are graphs showing lake levels and water flows from January 1, 2023, onward. These are made possible through our process of using the Dam Cam and remote monitoring.  

Starting January 2024 we changed the logging format. For simplicity we show the graphs separately by year, with 2025 updating automatically.

Pond Elevation is the lake level. Flow (before changes) is the flow over the dam prior to any changes that may be made that day to the stop logs.  Stop log changes are shown as dots on the graph.

Dashed and dotted lines are used to show the desired flows and pond elevations. We try to stay within these ranges, but mother nature often has other ideas.

As a reminder, we don't truly control pond elevation, all we can do is influence it based on the amount of water we release.  Generally we must release at least the Aquatic Base Flow of 1.2 cubic feet/second at all times unless permission is granted from the Maine Department of Environmental Protection to release less, typically due to low pond levels and dry weather conditions.

The above graphic shows the 2023 measured flows and pond levels vs. the targets set in the Management Plan or where the Management Plan is silent (off-season low, "shoulders" between in and off season), set by the TPIA.

Dam Logs Graph

The graphs above show the results of reading of the two rulers now being used to monitor the level of the lake and water flow over the dam. For days where no reading was obtained, there is a gap. During periods of rapid lake level change there may be multiple observations in a single day.

The top line shows the water flow over the dam in inches.

The bottom portion of the graphs show the lake level as a negative number representing inches below the top of the dam. This is referred to as the Pond Elevation.

Each ruler has 1" gradations.

Dam Cam Photo Album



A collection of the images of our dam, mostly taken through our camera.

Click to View

Dam Cam Placement

Initially, in January 2023, we cable-tied the camera and solar panel to the Dam fence for an initial test, about 5' high.

On February 16, 2023, we installed a mounting bracket created by the Dam Keeper and relocated the camera to about 6' 6" above the Dam.. Due to the camera's greater height and sharper angle, we found reading the rulers more difficult.

On April 18, 2023, we relocated the camera to its current position below the boards that provide access across the opening of the Dam. This location, shown above, is close to the water level and provides a very clear ability to read the rulers.  On June 26th we made a minor tweak to the camera mounting bracket.

Detailed Log Records

If you want to see the detailed daily log records, readings taken independently outside the dam cage, or historical records, click the button below.

Read more

Address

P.O. Box 209
South Casco, ME 04077, US

About Us

The Thomas Pond Improvement Association was established in order to preserve, protect and enhance the health of our lake to the benefit of our surroundings/environment.

The Thomas Pond Improvement Association is an IRS registered  501(c)(3) charitable organization. Contributions may be tax deductible.  It is also possible to donate through Donor Advised Funds.

© 2025 Thomas Pond Improvement Association