White Rock Lake
Dallas County, Texas1,119 acresView mapDirections
Nutrients and algae run well above the regional average.
↓ down from D at the last regrade
- Hypereutrophic
- #2 of 2 in the county
- 44 ft max depth
- Public access
- Limited data
White Rock Lake in Dallas County, Texas has a water quality grade of F (Algae-prone). Water clarity: 1.7 ft visibility. Phosphorus: 80 µg/L. Chlorophyll-a (algae): 57.6 µg/L. Surface area: 1119 acres.
- Clarity
- 1.7 ft
- Max depth
- ~44 ft est.
- Area
- 1,119 acres
- Type
- Hypereutrophic
- Phosphorus
- 80 µg/L
- Chlorophyll-a
- 57.6 µg/L
- Trend
- → Stable
- Public access
- Yes
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Stays near White Rock Lake
Compare lakeside cabins, hotels, and vacation rentals near White Rock Lake in Dallas 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 White Rock Lake are listed below.
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Watch White Rock Lake’s letter
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White Rock Lake is a 1,119-acre highly nutrient-loaded hypereutrophic lake in Dallas County, Texas with an estimated average depth of about 44 feet. Water quality is graded F based on 2 sampling years through 2025. Phosphorus level is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 1 other monitored lakes in Dallas County, White Rock Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, TCEQ, last sampled 2025-12-10. Grade methodology: LakeQuality methodology.
What White Rock Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Big water1,119 acres
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 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 1.7 ft of visibility. Phosphorus 80 µg/L. Chlorophyll-a 57.6 µg/L. TSI 69. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.7 ft | Not graded |
| Phosphorus | 80 µg/L | Poor |
| Chlorophyll-a (Algae) | 57.6 µg/L | Poor |
| Trophic State Index (TSI) | 69 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~44 ft est. |
| Average Depth | ~41 ft est. |
| Surface Area | 1,119 acres |
| Public Access | Yes |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Texas has not published bathymetry for White Rock Lake.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Recreation & Access
- White Rock Lake (West)Public
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing White Rock Lake
Water Quality Trend: → Stable
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.01 m/yr | 6 |
| Phosphorus | ↓ Declining | +4 µg/L/yr | 4 |
| Chlorophyll-a | ↑ Improving | -3.69 µg/L/yr | 4 |
Reservoir Info (USACE NID)
White Rock Lake is a man-made reservoir impounded by the White Rock Dam (completed 1911), built primarily for water supply on the White Rock Creek; earth-type dam, 47 ft tall and 2,100 ft long.
- Surface area
- 1,119 ac
- Normal storage
- 9,004 ac-ft
- Max storage
- 39,400 ac-ft
- Drainage area
- 100 sq mi
- Hazard class
- High
- Owner
- CITY OF DALLAS
All listed purposes: Water Supply;Recreation.
Source: USACE National Inventory of Dams, NID ID TX00840 · Operator website
County Ranking
Ranked #2 of 2 lakes in Dallas County
Nearby Lakes With Higher Grades
White Rock Lake holds Grade F. 3 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
Nearby Lakes in Dallas County
Frequently asked questions about White Rock Lake
Where is White Rock Lake?
- White Rock Lake is a lake in Dallas County, Texas. LakeQuality grades it F for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for White Rock Lake?
- White Rock Lake in Dallas County, Texas has a water quality grade of F (Algae-prone). Water clarity: 1.7 ft visibility. Phosphorus: 80 µg/L. Chlorophyll-a (algae): 57.6 µg/L. Surface area: 1119 acres.
Is White Rock Lake safe to swim in?
- The F is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is White Rock Lake?
- No published bathymetric survey covers White Rock Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 44 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 1119 acres.
Are there boat ramps on White Rock Lake?
- White Rock Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include White Rock Lake (West). Public access is listed as yes.
Explore White Rock Lake across LakeQuality
More Texas Lake Rankings
Other Grade F Lakes in Texas
Hypereutrophic Lakes in Texas
Where this data comes from
52 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
TCEQMAIN52 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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory