What is the cleanest lake in Tom Green County, Texas?

Twin Buttes Reservoir in Tom Green County is the highest-rated lake in Tom Green County, Texas with an EPA water quality grade of NR.

How are these rankings calculated?

Lakes are graded A through F on nutrients and algae — total phosphorus, nitrogen, chlorophyll-a, and turbidity — against EPA National Lakes Assessment 2022 condition classes for that lake’s ecoregion. Water clarity (Secchi depth) is measured and shown; it is not the letter. Lakes without enough recent samples are UNRATED, not given an F. Source data comes from the EPA Water Quality Portal.

Cleanest Lakes in Tom Green County, Texas

Twin Buttes Reservoir in Tom Green County leads the rankings with a water quality grade of NR. Below are the top 5 cleanest monitored lakes in Tom Green County, Texas, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Twin Buttes Reservoir	Tom Green	NR	-	-	-
2	Twin Buttes Reservoir	Tom Green	NR	-	-	-
3	Twin Buttes Reservoir	Tom Green	NR	-	-	-
4	Ripple Reservoir	Tom Green	NR	-	-	-
5	Kenneth Brown Reservoir	Tom Green	NR	-	-	-

Ranked List

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