North Mouse Creek Lake
McMinn County, TennesseeView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- Impaired · Mercury
- Limited data
North Mouse Creek Lake in McMinn County, Tennessee is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 67 µg/L.
- Phosphorus
- 67 µg/L
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Watch North Mouse Creek Lake’s letter
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Why North Mouse Creek Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For North Mouse Creek Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by TDEC and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
North Mouse Creek Lake is a lake in McMinn County, Tennessee.
Source: EPA Water Quality Portal sampling records, TDEC, last sampled 2012-07-05. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedBacteria advisory
The letter is not a swimming clearance. North Mouse Creek Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, pathogens (E. coli, fecal). Check local advisories before you swim.
Water quality measurements for North Mouse Creek Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus 67 µg/L. TSI 65.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 67 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 65 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Fishing North Mouse Creek Lake
EPA Impairment Status
North Mouse Creek Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit TN06020002008_1000 · Official waterbody report · Matched by proximity (1.29 km)
Graded lakes near North Mouse Creek Lake
North Mouse Creek Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in McMinn County
Frequently asked questions about North Mouse Creek Lake
Where is North Mouse Creek Lake?
- North Mouse Creek Lake is a lake in McMinn County, Tennessee. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for North Mouse Creek Lake?
- North Mouse Creek Lake in McMinn County, Tennessee is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 67 µg/L.
Is North Mouse Creek Lake safe to swim in?
- The letter is not a swimming clearance. North Mouse Creek Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, pathogens (E. coli, fecal). Check local advisories before you swim.
Explore North Mouse Creek Lake across LakeQuality
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Where this data comes from
1 measurement from 1 monitoring station, 2012. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- TDEC Division of Water Resources
TDECWR_WQX1 sample · 2012
Analytical methods
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
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
Impairment status from EPA ATTAINS 303(d) database