Foxboro Lake
Franklin County, WisconsinEutrophic
Foxboro Lake is a 4-acre productive, nutrient-rich eutrophic lake in Franklin County, MO. Water quality is graded D based on 2 sampling years through 2021. Compared to the 4 other monitored lakes in Franklin County, Foxboro Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2021-10-12. Grade methodology: LakeGrade methodology.
Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Murky, only visible to about 4 ft. Chlorophyll-a: 68.2 µg/L. Trophic State Index: 65.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 68.2 µg/L | F |
| Trophic State Index (TSI) | 65 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 4 acres |
Location
County Ranking
Ranked #5 of 5 lakes in Franklin County
Cleaner Lakes Within 30 Miles
Foxboro Lake holds Grade D. 5 nearby lakes hold higher grades.
- BSeetal LakeGasconade County · 21.5 mi · Two grade letters higher (D → B)
- BSherwood Lake Nr. DamWarren County · 27.2 mi · Two grade letters higher (D → B)
- CLost Valley LakeGasconade County · 6.8 mi · Higher grade (D → C)
- CPort Hudson LakeFranklin County · 7.3 mi · Higher grade (D → C)
- CPeaceful Valley LakeGasconade County · 11 mi · Higher grade (D → C)
Nearby Lakes in Franklin 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)
Foxboro Lake is a man-made reservoir impounded by the Foxboro Lake Dam (completed 1974), built primarily for fish and wildlife pond on the TR-KRIETE CREEK; earth-type dam, 33 ft tall and 810 ft long.
- Surface area
- 4 ac
- Normal storage
- 84 ac-ft
- Max storage
- 132 ac-ft
- Drainage area
- 108.8 sq mi
- Hazard class
- Significant
- Owner
- WILLIAM KRUMMEL
All listed purposes: Fish and Wildlife Pond;Recreation.
Source: USACE National Inventory of Dams, NID ID MO31298 · Operator website
EPA Impairment Status
Foxboro 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_7382.00 · 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: 2021-10-12
Monitoring stations: 1