Cooper Lake Site
Hopkins County, TexasView mapDirections
Nutrients and algae run above the regional average.
↓ down from C at the last regrade
- Eutrophic
- #1 of 1 in the county
- Public access
- Limited data
Cooper Lake Site in Hopkins County, Texas has a water quality grade of D (Nutrient-rich). Water clarity: 2.7 ft visibility. Phosphorus: 50 µg/L. Chlorophyll-a (algae): 28.7 µg/L.
- Clarity
- 2.7 ft
- Type
- Eutrophic
- Phosphorus
- 50 µg/L
- Chlorophyll-a
- 28.7 µg/L
- Trend
- → Stable
- Public access
- Yes
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Stays near Cooper Lake Site
Compare lakeside cabins, hotels, and vacation rentals near Cooper Lake Site in Hopkins 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Cooper Lake Site are listed below.
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Cooper Lake Site is a productive, nutrient-rich eutrophic lake in Hopkins County, Texas. Water quality is graded D based on 2 sampling years through 2025. Limited fish-species data available. Public access is available with 2 public boat landings.
Source: EPA Water Quality Portal sampling records, TCEQ, last sampled 2025-09-10. Grade methodology: LakeQuality methodology.
What Cooper Lake Site is good for
From access and monitoring records, not editorial picks.
- Boat launch2 documented ramps
Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 2.7 ft of visibility. Phosphorus 50 µg/L. Chlorophyll-a 28.7 µg/L. TSI 62. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.7 ft | Not graded |
| Phosphorus | 50 µg/L | Poor |
| Chlorophyll-a (Algae) | 28.7 µg/L | Poor |
| Trophic State Index (TSI) | 62 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Recreation & Access
- Cooper Lake State Park - TiraPublic
- Cooper Lake State Park - Gull's BluffPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Cooper Lake Site
Water Quality Trend: → Stable
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.003 m/yr | 6 |
| Phosphorus | → Stable | +0.42 µg/L/yr | 5 |
| Chlorophyll-a | → Stable | +0.29 µg/L/yr | 5 |
County Ranking
Ranked #1 of 1 lakes in Hopkins County
Nearby Lakes in Hopkins County
Frequently asked questions about Cooper Lake Site
Where is Cooper Lake Site?
- Cooper Lake Site is a lake in Hopkins County, Texas. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Cooper Lake Site?
- Cooper Lake Site in Hopkins County, Texas has a water quality grade of D (Nutrient-rich). Water clarity: 2.7 ft visibility. Phosphorus: 50 µg/L. Chlorophyll-a (algae): 28.7 µg/L.
Is Cooper Lake Site safe to swim in?
- The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Cooper Lake Site?
- Cooper Lake Site has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Cooper Lake State Park - Tira, Cooper Lake State Park - Gull's Bluff. Public access is listed as yes.
Explore Cooper Lake Site across LakeQuality
More Texas Lake Rankings
Other Grade D Lakes in Texas
Eutrophic Lakes in Texas
Where this data comes from
63 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
TCEQMAIN63 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.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory