What is the water quality grade for L Houston W of Lake Shadows?

L Houston W of Lake Shadows in Harris County, Texas received a water quality grade of F (Very Poor). Water clarity: 1.5 ft visibility. Phosphorus: 180 µg/L. Chlorophyll-a (algae): 56.1 µg/L.

Is L Houston W of Lake Shadows safe to swim in?

Avoid swimming, very poor water quality, potential algae toxins. L Houston W of Lake Shadows has an overall water quality grade of F. Algae concentration (chlorophyll-a) is 56.1 µg/L. Always check local health department advisories before swimming.

Harris County, Texas

L Houston W of Lake Shadows

Grade FVery Poor · 1.5 ft clarity

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Hypereutrophic

L Houston W of Lake Shadows is a highly nutrient-loaded hypereutrophic lake in Harris County, Texas. Water quality is graded F based on 2 sampling years through 2025. Compared to the 4 other monitored lakes in Harris County, L Houston W of Lake Shadows ranks #5 for water quality.

Source: EPA Water Quality Portal sampling records, Texas DNR, last sampled 2025-03-31. Grade methodology: LakeGrade methodology.

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Swimming Safety

Avoid swimming, very poor water quality, potential algae toxins

Water Quality Grade: F, Very Poor

Very murky, less than 1.5 ft of visibility. Phosphorus level: 180 µg/L. Chlorophyll-a: 56.1 µg/L. Trophic State Index: 73.

Metric	Value	Grade
Water Clarity (Secchi Depth)	1.5 ft	F
Phosphorus	180 µg/L	F
Chlorophyll-a (Algae)	56.1 µg/L	F
Trophic State Index (TSI)	73	Hypereutrophic

Very high nutrients, dense algae, poor clarity

Where to stay near L Houston W of Lake Shadows

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