Chilton Millpond
Chilton Millpond in Calumet County, Wisconsin has a water quality grade of D (Nutrient-rich). Water clarity: 2.9 ft visibility. Phosphorus: 287.5 µg/L. Maximum depth: 7 ft. Surface area: 11 acres.
- Clarity
- 2.9 ft
- Max depth
- 7 ft
- Area
- 11 acres
- Type
- Hypereutrophic
- Public access
- Yes
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Chilton Millpond →
Next lake in Calumet County
Chilton Millpond is a 11-acre highly nutrient-loaded hypereutrophic lake in Calumet County, Wisconsin with a maximum depth of 7 feet. Water quality is graded D based on 1 sampling years through 2023. The lake supports 5 documented fish species including Panfish, Largemouth Bass, and Smallmouth Bass. Public access is available. Compared to the 1 other monitored lakes in Calumet County, Chilton Millpond ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2023-02-13. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 2.9 ft of visibility. Phosphorus level: 287.5 µg/L. Trophic State Index: 74.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.9 ft | Not graded |
| Phosphorus | 287.5 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 74 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Chilton Millpond
Compare lakeside cabins, hotels, and vacation rentals near Chilton Millpond in Calumet County, Wisconsin — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Chilton Millpond are listed below.
Top-rated places to stay near Chilton Millpond
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 7 ft |
| Surface Area | 11 acres |
| Public Access | Yes |
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Chilton Millpond
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 1993).
Fish Species (DNR-rated)
Reservoir Info (USACE NID)
Chilton Millpond is a man-made reservoir impounded by the Chilton (completed 1850), built primarily for recreation on the SOUTH BRANCH MANITOWOC; gravity-type dam, 13 ft tall and 80 ft long.
- Surface area
- 46 ac
- Normal storage
- 46 ac-ft
- Max storage
- 90 ac-ft
- Drainage area
- 75 sq mi
- Hazard class
- High
- Owner
- City of Chilton
Source: USACE National Inventory of Dams, NID ID WI00104 · Operator website · Matched by proximity (0.04 km)
Regulated Pollution Sources Nearby
3 EPA-permitted facilities operate within about 5 miles of Chilton Millpond under Clean Water Act (NPDES) discharge permits. 3 facilities have a reported Clean Water Act violation in the past three years.
- Foremost Farms Usa ChiltonChilton · 2 mi away · NPDES WI0027618Recent violation
- Rivers Edge Dairy LlcChilton · 2.2 mi away · NPDES WI0065960Recent violation
- Holsum Dairies LlcRantoul · 4.9 mi away · NPDES WI0061620Recent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
County Ranking
Ranked #2 of 2 lakes in Calumet County
Nearby Lakes With Higher Grades
Chilton Millpond holds Grade D. 3 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
Nearby Lakes in Calumet County
Frequently asked questions about Chilton Millpond
What is the water quality grade for Chilton Millpond?
- Chilton Millpond in Calumet County, Wisconsin has a water quality grade of D (Nutrient-rich). Water clarity: 2.9 ft visibility. Phosphorus: 287.5 µg/L. Maximum depth: 7 ft. Surface area: 11 acres.
Is Chilton Millpond safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Chilton Millpond has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
How deep is Chilton Millpond?
- Chilton Millpond has a maximum depth of 7 feet. The lake covers 11 acres.
What fish are in Chilton Millpond?
- Fish species found in Chilton Millpond include Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Catfish. Chilton Millpond is located in Calumet County, Wisconsin.
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Very high nutrients, dense algae, poor clarity
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Where this data comes from
15 measurements from 1 monitoring station, 2022–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX15 samples · 2022–2023
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Fish and recreation data from Wisconsin DNR Lakes