Wright Patman Lake Site
Cass County, TexasView mapDirections
Nutrients and algae run above the regional average.
- Eutrophic
- #1 of 1 in the county
- Public access
Wright Patman Lake Site in Cass County, Texas has a water quality grade of D (Nutrient-rich). Water clarity: 1.8 ft visibility. Phosphorus: 84.7 µg/L. Chlorophyll-a (algae): 23.4 µg/L.
- Clarity
- 1.8 ft
- Type
- Eutrophic
- Phosphorus
- 84.7 µg/L
- Chlorophyll-a
- 23.4 µg/L
- Public access
- Yes
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Stays near Wright Patman Lake Site
Compare lakeside cabins, hotels, and vacation rentals near Wright Patman Lake Site in Cass 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 Wright Patman Lake Site are listed below.
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Wright Patman Lake Site is a productive, nutrient-rich eutrophic lake in Cass County, Texas. Water quality is graded D based on 2 sampling years through 2025. Limited fish-species data available. Public access is available with 5 public boat landings.
Source: EPA Water Quality Portal sampling records, TCEQ, last sampled 2025-09-15. Grade methodology: LakeQuality methodology.
What Wright Patman Lake Site is good for
From access and monitoring records, not editorial picks.
- Boat launch5 documented ramps
Swimming Safety
Grade onlyAlgae risk
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 1.8 ft of visibility. Phosphorus 84.7 µg/L. Chlorophyll-a 23.4 µg/L. TSI 66. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.8 ft | Not graded |
| Phosphorus | 84.7 µg/L | Poor |
| Chlorophyll-a (Algae) | 23.4 µg/L | Fair |
| Trophic State Index (TSI) | 66 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Recreation & Access
- Piney PointPublic
- Cass County ParkPublic
- Co Rd 3560Public
- Rocky PointPublic
- Kelly Creek MarinaSemi-private
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Wright Patman Lake Site
County Ranking
Ranked #1 of 1 lakes in Cass County
Nearby Lakes in Cass County
Frequently asked questions about Wright Patman Lake Site
Where is Wright Patman Lake Site?
- Wright Patman Lake Site is a lake in Cass County, Texas. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Wright Patman Lake Site?
- Wright Patman Lake Site in Cass County, Texas has a water quality grade of D (Nutrient-rich). Water clarity: 1.8 ft visibility. Phosphorus: 84.7 µg/L. Chlorophyll-a (algae): 23.4 µg/L.
Is Wright Patman 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 Wright Patman Lake Site?
- Wright Patman Lake Site has 5 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Piney Point, Cass County Park, Co Rd 3560, Rocky Point, among others. Public access is listed as yes.
Explore Wright Patman Lake Site across LakeQuality
More Texas Lake Rankings
Other Grade D Lakes in Texas
Eutrophic Lakes in Texas
Where this data comes from
134 measurements from 2 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Texas Commission on Environmental Quality
TCEQMAIN134 samples · 2020–2025
Monitoring station identifiers (2)
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