Cedar Lake
Boone County, WisconsinEutrophic
Cedar Lake is a 21-acre productive, nutrient-rich eutrophic lake in Boone County, MO. Water quality is graded F based on 3 sampling years through 2024. Compared to the 11 other monitored lakes in Boone County, Cedar Lake ranks #12 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-08-02. 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 2.1 ft of visibility. Phosphorus level: 98 µg/L. Chlorophyll-a: 30.8 µg/L. Trophic State Index: 67.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.1 ft | F |
| Phosphorus | 98 µg/L | F |
| Chlorophyll-a (Algae) | 30.8 µg/L | F |
| Trophic State Index (TSI) | 67 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 21 acres |
Location
County Ranking
Ranked #12 of 12 lakes in Boone County
Cleaner Lakes Within 30 Miles
Cedar Lake holds Grade F. 5 nearby lakes hold higher grades.
- BLake of the WoodsBoone County · 8 mi · Two grade letters higher (F → B)
- CBethel LakeBoone County · 0.7 mi · Two grade letters higher (F → C)
- CQuarry Heights LakeBoone County · 3.2 mi · Two grade letters higher (F → C)
- CPhillips LakeBoone County · 3.2 mi · Two grade letters higher (F → C)
- DStephens LakeBoone County · 4.5 mi · Higher grade (F → D)
Nearby Lakes in Boone County
More Wisconsin Lake Rankings
Other Grade F Lakes in Wisconsin
St. Louis County · Clarity: 1.6 ft
Jackson County · Clarity: 2 ft
St. Charles County · Clarity: 2.3 ft
St. Francois County · Clarity: 1.1 ft
Saline County · Clarity: 2.3 ft
Polk County · Clarity: 1.2 ft
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Cedar Lake is a man-made reservoir impounded by the Cedar Lake Dam (completed 1975), built primarily for recreation on the TR-LITTLE BONNE FEMME CREEK; earth-type dam, 42 ft tall and 600 ft long.
- Surface area
- 21 ac
- Normal storage
- 188 ac-ft
- Max storage
- 302 ac-ft
- Drainage area
- 0.83 sq mi
- Hazard class
- High
- Owner
- CEDAR LAKE HOA
Source: USACE National Inventory of Dams, NID ID MO11058 · Operator website
EPA Impairment Status
Cedar Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MO_7199.00 · 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: 2024-08-02
Monitoring stations: 1