Cold Springs Lake
Cass County, WisconsinEutrophic
Cold Springs Lake is a 16-acre productive, nutrient-rich eutrophic lake in Cass County, IA. Water quality is graded D based on 2 sampling years through 2024. Compared to the 1 other monitored lakes in Cass County, Cold Springs Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-09-29. Grade methodology: LakeGrade methodology.
Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Murky, only visible to about 4.8 ft. Chlorophyll-a: 21.6 µg/L. Trophic State Index: 58.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.8 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 21.6 µg/L | D |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 15.5 acres |
Location
County Ranking
Ranked #1 of 2 lakes in Cass County
Cleaner Lakes Within 30 Miles
Cold Springs Lake holds Grade D. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Cass County
More Wisconsin Lake Rankings
Other Grade D Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Cold Springs Lake is a man-made reservoir impounded by the Cold Springs Dam (completed 1949), built primarily for recreation on the TR- EAST NISHNABOTNA RIVER; earth-type dam, 12 ft tall and 1,350 ft long.
- Surface area
- 15.5 ac
- Normal storage
- 50 ac-ft
- Max storage
- 75 ac-ft
- Drainage area
- 3.6 sq mi
- Hazard class
- Low
- Owner
- Iowa Department of Natural Resources
Source: USACE National Inventory of Dams, NID ID IA03165 · Operator website
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-09-29
Monitoring stations: 1