Union County, Tennessee · Water Quality Report Card
Blue Springs Hollow Embayment of Powell River Arm of Norris Reservoir
Blue Springs Hollow Embayment of Powell River Arm of Norris Reservoir in Union County, Tennessee is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 10 µg/L.
- Type
- Oligotrophic
Blue Springs Hollow Embayment of Powell River Arm of Norris Reservoir is a cold, clear oligotrophic lake in Union County, Tennessee.
Source: EPA Water Quality Portal sampling records, TDEC, last sampled 2022-07-05. 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
No clarity data. Phosphorus level: 10 µg/L. Trophic State Index: 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 10 µg/L | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
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Fishing Blue Springs Hollow Embayment of Powell River Arm of Norris Reservoir
Location
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Low nutrients, clear water, excellent for swimming
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Where this data comes from
2 measurements from 2 monitoring stations, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- TDEC Division of Water Resources
TDECWR_WQX2 samples · 2022
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (2)
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
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2022-07-05
Monitoring stations: 2