Muscogee County, Georgia · Water Quality Report Card
Lake Oliver (Aka Chatt River
Lake Oliver (Aka Chatt River in Muscogee County, Georgia has a water quality grade of C (Fair). Phosphorus: 21.1 µg/L.
- Mean depth
- ~20 ft est.
- Type
- Mesotrophic
- Trend
- ↓ Declining
Lake Oliver (Aka Chatt River is a mesotrophic lake in Muscogee County, Georgia with an estimated average depth of about 20 feet. Water quality is graded C based on 1 sampling years through 2026. Overall water quality is declining over recent sampling years. Compared to the 1 other monitored lakes in Muscogee County, Lake Oliver (Aka Chatt River ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Georgia EPD, last sampled 2026-03-03. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C (Fair)
No clarity data. Phosphorus level: 21.1 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 21.1 µg/L | Fair |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Average Depth | ~20 ft est. |
Depth marked “est.” is a modeled estimate from HydroLAKES, not a measured survey. Georgia has not published bathymetry for Lake Oliver (Aka Chatt River.
Where to stay near Lake Oliver (Aka Chatt River
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Fishing Lake Oliver (Aka Chatt River
Water Quality Trend: ↓ Declining
Based on 14 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.062 m/yr | 10 |
| Phosphorus | ↓ Declining | +1.17 µg/L/yr | 6 |
| Chlorophyll-a | ↓ Declining | +0.97 µg/L/yr | 10 |
Location
County Ranking
Ranked #2 of 2 lakes in Muscogee County
Cleaner Lakes Within 30 Miles
Lake Oliver (Aka Chatt River holds Grade C. 2 nearby lakes hold higher grades.
- AHarl LakeHarris County · 11.5 mi · Two grade letters higher (C → A)
- AHarl LakeHarris County · 18.8 mi · Two grade letters higher (C → A)
Nearby Lakes in Muscogee County
Explore Lake Oliver (Aka Chatt River across LakeGrade
More Georgia Lake Rankings
Other Grade C Lakes in Georgia
Mesotrophic Lakes in Georgia
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
138 measurements from 1 monitoring station, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Georgia DNR Environmental Protection Division
21GAEPD_WQX138 samples · 2020–2026
Analytical methods
- Phosphorus by Colorimetry
- Turbidity by Nephelometry
Monitoring station identifiers (1)
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: 2026-03-03
Monitoring stations: 1