Aspen Lake Along Southern Arm
Warren County, WisconsinEutrophic
Aspen Lake Along Southern Arm is a 146-acre productive, nutrient-rich eutrophic lake in Warren County, MO. Water quality is graded C based on 3 sampling years through 2021. Compared to the 15 other monitored lakes in Warren County, Aspen Lake Along Southern Arm ranks #8 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2021-09-27. Grade methodology: LakeGrade methodology.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 3.8 ft. Phosphorus level: 20.8 µg/L. Chlorophyll-a: 5.3 µg/L. Trophic State Index: 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.8 ft | D |
| Phosphorus | 20.8 µg/L | B |
| Chlorophyll-a (Algae) | 5.3 µg/L | B |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 146 acres |
Location
County Ranking
Ranked #8 of 16 lakes in Warren County
Cleaner Lakes Within 30 Miles
Aspen Lake Along Southern Arm holds Grade C. 5 nearby lakes hold higher grades.
- AAlpine LakeWarren County · 2.4 mi · Two grade letters higher (C → A)
- BLake KonstanzWarren County · 2 mi · Higher grade (C → B)
- BWhippoorwill LakeWarren County · 0.7 mi · Higher grade (C → B)
- BCastlenovo LakeWarren County · 1 mi · Higher grade (C → B)
- BInnsbrook Lake Nr. DamWarren County · 1.2 mi · Higher grade (C → B)
Nearby Lakes in Warren County
More Wisconsin Lake Rankings
Other Grade C Lakes in Wisconsin
Ralls County · Clarity: 3.7 ft
Platte County · Clarity: 4.7 ft
Barry County · Clarity: 5 ft
Phelps County · Clarity: 4.9 ft
Randolph County · Clarity: 3.6 ft
Ralls County · Clarity: 3.8 ft
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Aspen Lake Along Southern Arm is a man-made reservoir impounded by the Lake Aspen Dam (completed 1979), built primarily for recreation on the TRIB CHARRETTE CREEK; earth-type dam, 53 ft tall and 650 ft long.
- Surface area
- 146 ac
- Normal storage
- 2,167 ac-ft
- Max storage
- 4,540 ac-ft
- Drainage area
- 7.46 sq mi
- Hazard class
- High
- Owner
- INNSBROOK OWNERS ASSOCIATION
Source: USACE National Inventory of Dams, NID ID MO31714 · Operator website · Matched by proximity (0.3 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2021-09-27
Monitoring stations: 1