Little Wood Reservoir is a productive, nutrient-rich eutrophic lake in Blaine County, Idaho. Water quality is graded D based on 2 sampling years through 2021. Compared to the 3 other monitored lakes in Blaine County, Little Wood Reservoir ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, Idaho DNR, last sampled 2021-07-15. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
No clarity data. Phosphorus level: 65 µg/L. Chlorophyll-a: 30.5 µg/L. Trophic State Index: 64.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 65 µg/L | D |
| Chlorophyll-a (Algae) | 30.5 µg/L | F |
| Trophic State Index (TSI) | 64 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Little Wood Reservoir
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Fishing Little Wood Reservoir
Location
County Ranking
Ranked #4 of 4 lakes in Blaine County
Cleaner Lakes Within 30 Miles
Little Wood Reservoir holds Grade D. 2 nearby lakes hold higher grades.
- BLittlewood LakeBlaine County · 0.3 mi · Two grade letters higher (D → B)
- CNla LakeBlaine County · 8.8 mi · Higher grade (D → C)
Nearby Lakes in Blaine County
Explore Little Wood Reservoir across LakeGrade
More Idaho Lake Rankings
Other Grade D Lakes in Idaho
Eutrophic Lakes in Idaho
More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2021-07-15
Monitoring stations: 1