Spring Fork Lake
Pettis County, WisconsinHypereutrophic
Spring Fork Lake is a 128-acre highly nutrient-loaded hypereutrophic lake in Pettis County, MO. Water quality is graded F based on 3 sampling years through 2021.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2021-05-02. 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 1.4 ft of visibility. Phosphorus level: 160 µg/L. Chlorophyll-a: 48.6 µg/L. Trophic State Index: 73.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.4 ft | F |
| Phosphorus | 160 µg/L | F |
| Chlorophyll-a (Algae) | 48.6 µg/L | F |
| Trophic State Index (TSI) | 73 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 128 acres |
Location
County Ranking
Ranked #1 of 1 lakes in Pettis County
Cleaner Lakes Within 30 Miles
Spring Fork Lake holds Grade F. 5 nearby lakes hold higher grades.
- BCrystal-Morgan LakeMorgan County · 19.9 mi · Two grade letters higher (F → B)
- BLake ButeoJohnson County · 22.3 mi · Two grade letters higher (F → B)
- CKnob Noster S.P. Lake 2Johnson County · 23.1 mi · Two grade letters higher (F → C)
- CH.S. Truman Res. Nr. Dam LakeBenton County · 22.5 mi · Two grade letters higher (F → C)
- DLoto LakeMorgan County · 28.4 mi · Higher grade (F → D)
Nearby Lakes in Pettis 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
Hypereutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Spring Fork Lake is a man-made reservoir impounded by the Spring Fork Lake Dam (completed 1925), built primarily for water supply on the CHEESE CK; earth-type dam, 43 ft tall and 1,600 ft long.
- Surface area
- 128 ac
- Normal storage
- 1,613 ac-ft
- Max storage
- 3,104 ac-ft
- Drainage area
- 10.79 sq mi
- Hazard class
- High
- Owner
- CITY OF SEDALIA WATER DP
Source: USACE National Inventory of Dams, NID ID MO30152 · Operator website
EPA Impairment Status
Spring Fork Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MO_7187.00 · 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: 2021-05-02
Monitoring stations: 1