• Lake Dolloff continued to have less-clear water, with high nutrient concentrations and high algal growth.
• Lake Dolloff has some of the shallowest Secchi depths in the Lake Stewardship Program.
• Lake Dolloff’s high nutrient concentrations and nitrogen-to-phosphorus (N:P) ratios below 25 both indicate that Lake Dolloff is likely to have algal blooms dominated by cyanobacteria (which have the ability to produce toxins).
• No algal blooms were reported for toxin testing in 2021.
This bathymetric map shows contour lines of equal depth, similar to a topographic map would for mountains and valleys. The red 'X' marks the location where water quality samples are taken.
This map shows the area of the watershed relative to the area of the lake. Generally speaking, the larger a watershed is relative to a lake, the greater the influence land use practices on lake water quality.
The average of these three TSI indicators during the growing season can be used
to place lakes in one of three broad categories:
<40 = oligotrophic (low productivity),
40 to 50 = mesotrophic (moderate productivity)
>50 = eutrophic (highly productive).
