Lake Arrowhead
Clinton County, WisconsinEutrophic
Lake Arrowhead is a 87-acre productive, nutrient-rich eutrophic lake in Clinton County, MO. Water quality is graded D based on 3 sampling years through 2023.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2023-08-10. Grade methodology: LakeGrade methodology.
Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Very murky, less than 2 ft of visibility. Phosphorus level: 68.2 µg/L. Chlorophyll-a: 28.2 µg/L. Trophic State Index: 65.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 ft | F |
| Phosphorus | 68.2 µg/L | D |
| Chlorophyll-a (Algae) | 28.2 µg/L | D |
| Trophic State Index (TSI) | 65 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 87 acres |
Location
County Ranking
Ranked #1 of 1 lakes in Clinton County
Cleaner Lakes Within 30 Miles
Lake Arrowhead holds Grade D. 5 nearby lakes hold higher grades.
- DWatkins Mill LakeClay County · 6.8 mi · Higher overall water quality score
- DSmithville LakeClay County · 12.1 mi · Higher overall water quality score
- DSmithville LakeClay County · 12.2 mi · Higher overall water quality score
- DSmithville Lake by DamClay County · 14.1 mi · Higher overall water quality score
- DPony Express LakeDeKalb County · 22.3 mi · Higher overall water quality score
Nearby Lakes in Clinton County
More Wisconsin Lake Rankings
Other Grade D Lakes in Wisconsin
St. Louis city County · Clarity: 2.3 ft
Shelby County · Clarity: 3.2 ft
Macon County · Clarity: 1.8 ft
Harrison County · Clarity: 1.7 ft
Stone County · Clarity: 2.3 ft
Knox County · Clarity: 2.1 ft
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Lake Arrowhead is a man-made reservoir impounded by the Lake Arrowhead Dam (completed 1975), built primarily for recreation on the MUDDY FORK; earth-type dam, 51 ft tall and 890 ft long.
- Surface area
- 87 ac
- Normal storage
- 2,754 ac-ft
- Max storage
- 3,209 ac-ft
- Drainage area
- 7.86 sq mi
- Hazard class
- High
- Owner
- LAKE ARROWHEAD POA
Source: USACE National Inventory of Dams, NID ID MO11016 · Operator website
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-08-10
Monitoring stations: 1