Carter County, Oklahoma · Water Quality Report Card
Rock Creek Reservoir
Rock Creek Reservoir in Carter County, Oklahoma is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3.2 ft visibility.
- Clarity
- 3.2 ft
- Mean depth
- ~12 ft est.
- Type
- Eutrophic
Rock Creek Reservoir is a productive, nutrient-rich eutrophic lake in Carter County, Oklahoma with an estimated average depth of about 12 feet.
Source: EPA Water Quality Portal sampling records, ODEQ, last sampled 2023-10-23. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not rated for swimming — there is not enough monitoring data to judge this lake
Water Quality Grade: Not rated
Very murky, less than 3.2 ft of visibility. Trophic State Index: 60.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.2 ft | |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 60 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Average Depth | ~12 ft est. |
Depth marked “est.” is a modeled estimate from HydroLAKES, not a measured survey. Oklahoma has not published bathymetry for Rock Creek Reservoir.
Where to stay near Rock Creek Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Rock Creek Reservoir in Carter County, Oklahoma — 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.
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Fishing Rock Creek Reservoir
Location
Nearby Lakes in Carter County
Explore Rock Creek Reservoir across LakeGrade
2 documented falls within 12.8 mi, nearest Turner Falls
Species activity outlook by water temperature and season
Where to stay at Oklahoma's top lakes, each with its grade
High nutrients, frequent algae, reduced clarity
Oklahoma's cleanest and most-polluted lakes, ranked
Planning a trip around Chickasaw?
Rock Creek Reservoir is about 18 miles from Chickasaw National Recreation Area. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Chickasaw →More Oklahoma Lake Rankings
Other Lakes in Oklahoma
Eutrophic Lakes in Oklahoma
More records, surveys & data sources
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.
Where this data comes from
23 measurements from 3 monitoring stations, 2019–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- OWRB Lakes Monitoring
OKWRB-LAKES_WQX23 samples · 2019–2023
Analytical methods
- OWRB Lakes Field Data Collection
- Determination of Turbidity
Monitoring station identifiers (3)
Grade thresholds come from the U.S. EPA National Lakes Assessment 2022 Technical Support Document (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated.
Data Sources
Water quality data from the EPA Water Quality Portal
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2023-10-23
Monitoring stations: 3