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LakeQuality

L Houston W of Lake Shadows

Harris County, TexasView mapDirections

This is the name TCEQ records for this water. It can describe one sampling location rather than the water as a whole.

TCEQ publishes the water-quality measurements for L Houston W of Lake Shadows. Here is what has been measured.

Clarity
1.5 ft
Murkier than most
Secchi · sampled 2025
Phosphorus
180 µg/L
More phosphorus than most
Measured by TCEQ
Chlorophyll-a
56.1 µg/L
More algae than most
Measured by TCEQ
  • Limited data

L Houston W of Lake Shadows in Harris County, Texas has water-quality measurements published by TCEQ, shown here as reported. Water clarity: 1.5 ft visibility. Phosphorus: 180 µg/L. Chlorophyll-a (algae): 56.1 µg/L.

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L Houston W of Lake Shadows is a lake in Harris County, Texas. Overall water quality is declining over recent sampling years.

Source: EPA Water Quality Portal sampling records, TCEQ, last sampled 2025-03-31. Methodology: how these readings are compared.

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether L Houston W of Lake Shadows is safe to swim in today is a call for the Texas Commission on Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for L Houston W of Lake Shadows

These are the measurements TCEQ publishes for L Houston W of Lake Shadows, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

Very murky, less than 1.5 ft of visibility. Phosphorus 180 µg/L. Chlorophyll-a 56.1 µg/L. TSI 73.

Water quality readings
MeasureReadingWhere it sits
Water clarity (Secchi depth)1.5ftMeasured, not scored

How deep a black-and-white disk stays visible from the surface. Higher is clearer.

Total phosphorus180µg/LMeasured, not scored

The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.

Chlorophyll-a (algae)56.1µg/LMeasured, not scored

The green pigment in algae — a direct measure of how much algae is in the water.

Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a.73Hypereutrophic
OligotrophicMesotrophicEutrophicHypereutrophic

Very high nutrients, dense algae, poor clarity

Ask about L Houston W of Lake Shadows

Answers come straight from the public measurements and survey records on this page.

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Fishing L Houston W of Lake Shadows

3 seasons of samples on record (2020–2022). Calling a direction takes at least 4 years of the same measurement.

  • Water clarity

    Improving

    3 years

  • Phosphorus

    Worsening

    +9.5 µg/L/yr3 years

  • Chlorophyll-a

    Worsening

    +2.05 µg/L/yr3 years

Nearby Lakes in Harris County

Frequently asked questions about L Houston W of Lake Shadows

Where is L Houston W of Lake Shadows?

L Houston W of Lake Shadows is in Harris County, Texas. This is the name TCEQ records for this water. It can describe one sampling location rather than the water as a whole. Its water-quality measurements are published by TCEQ and shown on this page as reported.

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

L Houston W of Lake Shadows in Harris County, Texas has water-quality measurements published by TCEQ, shown here as reported. Water clarity: 1.5 ft visibility. Phosphorus: 180 µg/L. Chlorophyll-a (algae): 56.1 µg/L.

Measurements on this page ↑

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

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Swimming on this page ↑

Where this data comes from

36 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.

Collected and reported by

  • Texas Commission on Environmental QualityTCEQMAIN36 samples · 2020–2025
Monitoring station identifiers (1)

EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.