Lake Gaston
Warren County, North CarolinaView mapDirections
Nutrients and algae sit mid-range for this region.
- Eutrophic
- #1 of 1 in the county
- Limited data
Lake Gaston in Warren County, North Carolina has a water quality grade of C (Fair). Water clarity: 4.1 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 12 µg/L.
- Clarity
- 4.1 ft
- Type
- Eutrophic
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Watch Lake Gaston’s letter
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Lake Gaston is a productive, nutrient-rich eutrophic lake in Warren County, North Carolina. Water quality is graded C based on 2 sampling years through 2024.
Source: EPA Water Quality Portal sampling records, NCDEQ, last sampled 2024-10-08. Grade methodology: LakeQuality methodology.
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 C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: C (Fair)
Murky, only visible to about 4.1 ft. Phosphorus 30 µg/L. Chlorophyll-a 12 µg/L. TSI 55. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.1 ft | Not graded |
| Phosphorus | 30 µg/L | Fair |
| Chlorophyll-a (Algae) | 12 µg/L | Fair |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Fishing Lake Gaston
County Ranking
Ranked #1 of 1 lakes in Warren County
Nearby Lakes in Warren County
Frequently asked questions about Lake Gaston
Where is Lake Gaston?
- Lake Gaston is a lake in Warren County, North Carolina. LakeQuality grades it C for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Gaston?
- Lake Gaston in Warren County, North Carolina has a water quality grade of C (Fair). Water clarity: 4.1 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 12 µg/L.
Is Lake Gaston safe to swim in?
- The C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Explore Lake Gaston across LakeQuality
Depth, room, public access, and the state wake-sport rules
Species activity outlook by water temperature and season
Where to stay at North Carolina's top lakes, each with its grade
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Where this data comes from
40 measurements from 2 monitoring stations, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North Carolina Dept of Environmental Quality NCDEQ-DWR WQX
21NC03WQ40 samples · 2024
Analytical methods
- WSSSOP
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- 2130 B ~ Nephelometric Method
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.