Lost Grove Lake
Scott County, WisconsinEutrophic
Lost Grove Lake is a 350-acre productive, nutrient-rich eutrophic lake in Scott County, IA. Water quality is graded C based on 2 sampling years through 2024. Compared to the 4 other monitored lakes in Scott County, Lost Grove Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-08-26. Grade methodology: LakeGrade methodology.
Swimming Safety
Swim with caution, moderate algae may be present
Water Quality Grade: C, Fair
Murky, only visible to about 3.9 ft. Chlorophyll-a: 15.8 µg/L. Trophic State Index: 58.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.9 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 15.8 µg/L | C |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 350 acres |
Location
County Ranking
Ranked #3 of 5 lakes in Scott County
Cleaner Lakes Within 30 Miles
Lost Grove Lake holds Grade C. 2 nearby lakes hold higher grades.
- BLambach LakeScott County · 15.9 mi · Higher grade (C → B)
- CRailroad LakeScott County · 16.2 mi · Higher overall water quality score
Nearby Lakes in Scott County
More Wisconsin Lake Rankings
Other Grade C Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Lost Grove Lake is a man-made reservoir impounded by the Lost Grove Lake (completed 2012), built primarily for recreation on the Lost Creek; earth-type dam, 75 ft tall and 1,165 ft long.
- Surface area
- 350 ac
- Normal storage
- 6,080 ac-ft
- Max storage
- 9,595 ac-ft
- Drainage area
- 7.1 sq mi
- Hazard class
- High
- Owner
- Iowa Department of Natural Resources
Source: USACE National Inventory of Dams, NID ID IA04083 · Operator website
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-08-26
Monitoring stations: 1