Water quality samples were collected from Lake Glenville at seven (7) locations. Five of the locations are in coves near the outlet of major streams within the watershed: Mill Creek, Hurricane Creek, Norton Creek, Cedar Creek, Glenville Creek, and Pine Creek. The seventh location is known as “Thalweg”. Thalweg is of German origin and literally means valley way. In fluvial geomorphology, the thalweg is the line of lowest elevation within a valley or watercourse. The aforementioned creeks are also routinely sampled for a suite of water quality parameters, increasing the knowledge and understanding of the specific issues of the watershed, such as identifying potential sources of pollutants which may be degrading water quality. Samples were analyzed for water temperature, dissolved oxygen (DO), pH, specific conductivity, turbidity, Ammonia-Nitrogen (NH3 +), Nitrate/Nitrite-Nitrogen (NO3-/NO2-), Total Phosphorus (TP), blue green algae-phycocyanin, and Chlorophyll-a. All water quality samples collected for analysis of Phosphorous and Nitrogen were collected from the upper two (2) meters of the lake using a depth integrated water sampler. Other parameters were measured using an In-Situ Aqua Troll 800 multiparameter sonde.

Water quality sampling occurred at six sites within the Lake Glenville watershed on 06/02/26. All sites were located as close as possible to sites sampled in previou s monitoring years; the location for the Glenville Creek sample was again sampled downstream at its standard location. A very light rain had occurred in the early morning prior to sampling on 06/02/25, the area received 0.55 inches of rain on 05/27/25 but none in the preceding days from 05/28/26 – 06/01/26 (Figure 1). Stream flows were normal base flow. The suite of parameters sampled included water temperature, dissolved oxygen (DO), pH, specific conductivity, turbidity, fecal coliform, E.coli, ammonia, nitrite/nitrate, phosphate, and alkalinity.