Highlands Reservoir
Highlands Reservoir in Harris County, Texas is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 429 acres.
- Area
- 429 acres
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Why Highlands Reservoir 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 Highlands Reservoir, no water-quality sampling on record for this lake.
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.
Highlands Reservoir is a 429-acre lake in Harris County, Texas.
Source: EPA Water Quality Portal sampling records, TCEQ, last sampled recent years. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Highlands Reservoir
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Highlands Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Highlands Reservoir in Harris County, Texas — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Highlands Reservoir
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 429 acres |
No bathymetric survey has been published for Highlands Reservoir, so its depth is not documented here.
Fishing Highlands Reservoir
Nearby Lakes in Harris County
Frequently asked questions about Highlands Reservoir
Where is Highlands Reservoir?
- Highlands Reservoir is a lake in Harris County, Texas. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Highlands Reservoir?
- Highlands Reservoir in Harris County, Texas is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 429 acres.
Is Highlands Reservoir safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Highlands Reservoir is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
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Where this data comes from
Measurements for Highlands Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.