Lake Ray Hubbard
Rockwall County, TexasView mapDirections
Nutrients and algae run well above the regional average.
↓ down from D at the last regrade
- Hypereutrophic
- #1 of 1 in the county
- Public access
Lake Ray Hubbard in Rockwall County, Texas has a water quality grade of F (Algae-prone). Water clarity: 2 ft visibility. Phosphorus: 64 µg/L. Chlorophyll-a (algae): 31.8 µg/L.
- Clarity
- 2 ft
- Type
- Hypereutrophic
- Phosphorus
- 64 µg/L
- Chlorophyll-a
- 31.8 µg/L
- Trend
- ↑ Improving
- Public access
- Yes
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Stays near Lake Ray Hubbard
Compare lakeside cabins, hotels, and vacation rentals near Lake Ray Hubbard in Rockwall 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 Lake Ray Hubbard are listed below.
Top-rated places to stay near Lake Ray Hubbard
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Watch Lake Ray Hubbard’s letter
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Lake Ray Hubbard is a highly nutrient-loaded hypereutrophic lake in Rockwall County, Texas. Water quality is graded F based on 2 sampling years through 2025. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 7 public boat landings.
Source: EPA Water Quality Portal sampling records, TCEQ, last sampled 2025-12-15. Grade methodology: LakeQuality methodology.
What Lake Ray Hubbard is good for
From access and monitoring records, not editorial picks.
- Boat launch7 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 F is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: F (Algae-prone)
Very murky, less than 2 ft of visibility. Phosphorus 64 µg/L. Chlorophyll-a 31.8 µg/L. TSI 65. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 ft | Not graded |
| Phosphorus | 64 µg/L | Poor |
| Chlorophyll-a (Algae) | 31.8 µg/L | Poor |
| Trophic State Index (TSI) | 65 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Recreation & Access
- Paul Jones ParkPublic
- Terry ParkPublic
- Lake Ray Hubbard - RockwellPublic
- Sapphire Bay MarinaSemi-private
- Harbor Bay MarinaSemi-private
- Chandler's LandingSemi-private
Showing 6 of 7 documented landings from the USGS National Boat Ramps inventory.
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Lake Ray Hubbard
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.1 m/yr | 5 |
| Phosphorus | ↑ Improving | -6 µg/L/yr | 4 |
| Chlorophyll-a | ↑ Improving | -4.8 µg/L/yr | 3 |
County Ranking
Ranked #1 of 1 lakes in Rockwall County
Nearby Lakes With Higher Grades
Lake Ray Hubbard holds Grade F. 2 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Rockwall County
Frequently asked questions about Lake Ray Hubbard
Where is Lake Ray Hubbard?
- Lake Ray Hubbard is a lake in Rockwall County, Texas. LakeQuality grades it F for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Ray Hubbard?
- Lake Ray Hubbard in Rockwall County, Texas has a water quality grade of F (Algae-prone). Water clarity: 2 ft visibility. Phosphorus: 64 µg/L. Chlorophyll-a (algae): 31.8 µg/L.
Is Lake Ray Hubbard safe to swim in?
- The F is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Lake Ray Hubbard?
- Lake Ray Hubbard has 7 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Paul Jones Park, Terry Park, Lake Ray Hubbard - Rockwell, Sapphire Bay Marina, among others. Public access is listed as yes.
Explore Lake Ray Hubbard across LakeQuality
More Texas Lake Rankings
Other Grade F Lakes in Texas
Hypereutrophic Lakes in Texas
Where this data comes from
899 measurements from 20 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS Texas Water Science Center
USGS-TX785 samples · 2020–2024 - Texas Commission on Environmental Quality
TCEQMAIN114 samples · 2020–2025
Monitoring station identifiers (20)
- USGS-325232096290000
- USGS-325208096341501
- USGS-325324096292601
- USGS-325023096302500
- USGS-325645096301401
- USGS-325207096324600
- USGS-325123096324300
- USGS-324924096295100
- USGS-325232096305200
- USGS-325545096283000
- USGS-325227096322401
- USGS-325348096290000
- USGS-324857096304801
- USGS-325329096322601
- USGS-324807096294201
- USGS-325207096321201
- USGS-325641096300001
- USGS-325053096301401
- TCEQMAIN-10998
- TCEQMAIN-11001
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