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LakeQuality

Hypereutrophic lakes (TSI above 70) are at the upper end of the productivity scale: visible algal blooms most weeks of summer, clarity often under 3 feet, and meaningful risk of harmful-algal-bloom toxin events. 32 hypereutrophic lakes are on the Texas books. Almost none of them are deep — 0% break 50 feet. Shallow basin plus heavy nutrient input is the consistent recipe.

Hypereutrophic lakes overwhelmingly grade D or F — the trophic class and the grade are measuring closely-related dimensions of the same underlying nutrient regime.

#LakeCountyGradeClarityDepthTSI
1Lake HoustonHarrisD0.6 ft-83
2Livingston ReservoirPolkD1.6 ft-73
3Lake Ray HubbardRockwallF2 ft-65
4Lake Houston S Union Pacific Rr BridgeHarrisF1.3 ft-73
5Lavon LakeCollinF1.4 ft-71
6Lake PalestineSmithF2 ft-66
7Jim L Chapman LakeDeltaF1.2 ft-69
8Lake MurvaulPanolaF2.1 ft-66
9Navarro Mills LakeNavarroF2.2 ft-64
10Lake KirbyTaylorF0.7 ft-78
11Lake Crook Mid LakeLamarF1.6 ft-69
12Lake O the Pines Mid LakeMarionF2.7 ft-61
13Springfield LakeLimestoneF1 ft-81
14Lake Whitney Nolands River ArmHillF1.3 ft-70
15White Rock LakeDallasF1.7 ft-69
16Lake Cypress Springs Mid LakeFranklinF2.6 ft-63
17Pat Cleburne ReservoirJohnsonF2.4 ft-64
18Lake WeatherfordParkerF2.2 ft-67
19Lake Amon G CarterMontagueF2.3 ft-63
20Upper Lake PalestineSmithF1.6 ft-69
21Buffalo Springs LakeLubbockF2.4 ft-70
22New Marlin City LakeFallsF1.5 ft-72
23Lake MexiaLimestoneF1.1 ft-74
24Lake FryerOchiltreeF0.7 ft-77
25Leon ReservoirEastlandF1.8 ft-63
26Lake OpinesMarionF2 ft-66
27Lake Waco N Bosque ArmMcLennanF1.3 ft-66
28Lake TanglewoodRandallF2.3 ft-68
29Tradinghouse Creek ReservoirMcLennanF2.7 ft-60
30Somerville Lake Big Creek ArmBurlesonF1.8 ft-70
31Lake Somerville Mid LakeBurlesonF1.8 ft-71
32Lake StamfordHaskellF2 ft-65

Source: EPA National Aquatic Resource Surveys, 2026.