Crawford Creek Lake
Ida County, WisconsinEutrophic
Crawford Creek Lake is a 63-acre productive, nutrient-rich eutrophic lake in Ida County, IA. Water quality is graded F based on 2 sampling years through 2024. Compared to the 1 other monitored lakes in Ida County, Crawford Creek Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-09-03. Grade methodology: LakeGrade methodology.
Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 1.6 ft of visibility. Chlorophyll-a: 50.4 µg/L. Trophic State Index: 70.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.6 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 50.4 µg/L | F |
| Trophic State Index (TSI) | 70 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 63 acres |
Location
County Ranking
Ranked #2 of 2 lakes in Ida County
Cleaner Lakes Within 30 Miles
Crawford Creek Lake holds Grade F. 5 nearby lakes hold higher grades.
- CLittle Sioux Park LakeWoodbury County · 15.5 mi · Two grade letters higher (F → C)
- COldham LakeMonona County · 20.7 mi · Two grade letters higher (F → C)
- CArrowhead LakeSac County · 28.4 mi · Two grade letters higher (F → C)
- DMoorehead LakeIda County · 8.6 mi · Higher grade (F → D)
- DYellow Smoke LakeCrawford County · 22.7 mi · Higher grade (F → D)
Nearby Lakes in Ida County
More Wisconsin Lake Rankings
Other Grade F Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Crawford Creek Lake is a man-made reservoir impounded by the Crawford Creek Subwatershed Site M-3 (completed 1976), built primarily for recreation on the CRAWFORD; earth-type dam, 49 ft tall and 980 ft long.
- Surface area
- 63 ac
- Normal storage
- 654 ac-ft
- Max storage
- 1,349 ac-ft
- Drainage area
- 4.01 sq mi
- Hazard class
- Significant
- Owner
- Ida County SWCD
All listed purposes: Recreation;Flood Risk Reduction.
Source: USACE National Inventory of Dams, NID ID IA01851 · Operator website · Matched by proximity (0.07 km)
EPA Impairment Status
Crawford 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
Source: EPA ATTAINS assessment unit IA 06-LSR-1583 · Official waterbody report
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-09-03
Monitoring stations: 1