L Houston W of Lake Shadows
Harris County, TexasView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- Limited data
L Houston W of Lake Shadows in Harris County, Texas is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 1.5 ft visibility. Phosphorus: 180 µg/L. Chlorophyll-a (algae): 56.1 µg/L.
- Clarity
- 1.5 ft
- Phosphorus
- 180 µg/L
- Chlorophyll-a
- 56.1 µg/L
- Trend
- ↓ Declining
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Watch L Houston W of Lake Shadows’s letter
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Why L Houston W of Lake Shadows has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For L Houston W of Lake Shadows, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by TCEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
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. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for L Houston W of Lake Shadows
These readings exist but are not enough for an A–F grade — see why.
Very murky, less than 1.5 ft of visibility. Phosphorus 180 µg/L. Chlorophyll-a 56.1 µg/L. TSI 73.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.5 ft | Not graded |
| Phosphorus | 180 µg/L | Not graded |
| Chlorophyll-a (Algae) | 56.1 µg/L | Not graded |
| Trophic State Index (TSI) | 73 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Fishing L Houston W of Lake Shadows
Water Quality Trend: ↓ Declining
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.95 m/yr | 3 |
| Phosphorus | ↓ Declining | +9.5 µg/L/yr | 3 |
| Chlorophyll-a | ↓ Declining | +2.05 µg/L/yr | 3 |
Graded lakes near L Houston W of Lake Shadows
L Houston W of Lake Shadows has no grade, but these lakes within a short drive do.
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 a lake in Harris County, Texas. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for L Houston W of Lake Shadows?
- L Houston W of Lake Shadows in Harris County, Texas is not rated for water quality — its monitoring record does not meet the evidence bar. 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?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore L Houston W of Lake Shadows across LakeQuality
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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 Quality
TCEQMAIN36 samples · 2020–2025
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.