Lake Menomin
Dunn County, Wisconsin1,009 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Lake Menomin. Here is what has been measured.
- Eutrophic
- Impaired · Nutrients (phosphorus, nitrogen)
- 2 aquatic invasives
- 34 ft max depth
- Public access
- Limited data
Lake Menomin in Dunn County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 3.1 ft visibility. Phosphorus: 89.7 µg/L. Maximum depth: 34 ft. Surface area: 1009 acres.
Wisconsin DNR lists Panfish as common on Lake Menomin. DNR survey details →
Lake Menomin is a 1,009-acre productive, nutrient-rich eutrophic lake in Dunn County, Wisconsin with a maximum depth of 34 feet. Overall water quality is declining over recent sampling years. The lake supports 5 documented fish species including Panfish, Largemouth Bass, and Smallmouth Bass. Public access is available with 5 public boat landings. Compared to the 2 other monitored lakes in Dunn County, Lake Menomin ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-16. Methodology: how these readings are compared.
Lake Menomin covers about 1,000 acres in Dunn County. It has 5 public boat landings, so a lakefront rental is not the only way to get a boat on the water. Vrbo is where to look for cabins and lake homes around Lake Menomin, and Booking.com and Expedia search hotels near the lake for your dates.
What Lake Menomin is good for
From access and monitoring records, not editorial picks.
- Boat launch5 documented ramps
- Fishing5 species recorded
- Deep water34 ft surveyed max depth
- Big water1,009 acres
Swimming conditions
Readings onlyRecreation use not supported
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Lake Menomin is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Lake Menomin is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lake Menomin
These are the measurements Wisconsin DNR publishes for Lake Menomin, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 3.1 ft of visibility. Phosphorus 89.7 µg/L. TSI 65.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 89.7µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 65 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lake Menomin
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Lake Menomin typically sits around 72°F at the surface in July. Summer average is about 72°F. Usually warmest in Jun (about 72°F) and coldest in Mar (about 44°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (44°F) to its warmest (72°F).
Typical surface water temperature by month, from 34 field readings (2024–2026) via the EPA Water Quality Portal. See the full Lake Menomin water temperature breakdown →
Wisconsin DNR lists Panfish as common on Lake Menomin.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Lake Menomin’s water-quality measurements separately, and the water-quality trend over 3 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 1990. 10 stations on file (most recent sample 2025).
Fish Species (DNR-rated)
DNR Reports & Resources
Wisconsin DNR Fisheries scientists publish multi-year survey reports for Lake Menomin covering fish populations, stocking, water quality, and management. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- 2024Lake Menomin spring survey, 2024Fisheries Survey · WI DNR · 2024 (PDF)
Lake Details
Max depth
34 ft
Surface area
1,009 acres
Public access
Yes
Listed by Wisconsin DNR
Lake Size & Watershed
Watershed (drainage) area
1,707 sq mi
HydroLAKES / HydroSHEDS
Shoreline
8.1 mi
HydroLAKES / HydroSHEDS
Elevation
804 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Wakanda ParkPublic
- Point Comfort ParkPublic
- Lakeside ParkPublic
- La Pointe ParkPublic
- Highway 29 BridgePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Lake Menomin
Compare lakeside cabins, hotels, and vacation rentals near Lake Menomin in Dunn 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 readings cover nutrients and algae, not lodging. Cabins and rentals around Lake Menomin are listed below.
Top-rated places to stay near Lake Menomin
Prices for Oct 9–11, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip? Cabins and lodging at Lake Menomin → · more Wisconsin lake trips
Follow Lake Menomin’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Lake Menomin
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water quality readings over time
3 seasons of samples on record (2024–2026). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Worsening3 years
Phosphorus
Worsening+3.8 µg/L/yr3 years
Reservoir Info (USACE NID)
Lake Menomin is a man-made reservoir impounded by the Menomonie (completed 1957), built primarily for hydroelectric on the Red Cedar; gravity-type dam, 37 ft tall and 642 ft long.
- Surface area
- 1,405 ac
- Normal storage
- 15,000 ac-ft
- Max storage
- 15,000 ac-ft
- Drainage area
- 1,795 sq mi
- Hazard class
- High
- Owner
- Northern States Power Co
All listed purposes: Hydroelectric;Recreation.
Source: USACE National Inventory of Dams, NID ID WI00735 · Operator website · Matched by proximity (0.75 km)
EPA Impairment Status
Lake Menomin is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Aquatic life, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit WI10008154 · Official waterbody report
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Lake Menomin under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 1 facility has a reported Clean Water Act violation in the past three years.
- Menomonie Wastewater Treatment FacilityMenomonie · 1.5 mi away · NPDES WI0024708MajorRecent 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.
Nearby Lakes in Dunn County
Frequently asked questions about Lake Menomin
Where is Lake Menomin?
- Lake Menomin is a lake in Dunn County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Lake Menomin?
- Lake Menomin in Dunn County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 3.1 ft visibility. Phosphorus: 89.7 µg/L. Maximum depth: 34 ft. Surface area: 1009 acres.
Is Lake Menomin safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lake Menomin is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
What is the water temperature of Lake Menomin?
- Lake Menomin typically sits around 72°F at the surface in July, from 34 EPA Water Quality Portal field readings (2024–2026). That is a typical value for the month, not a live reading.
How deep is Lake Menomin?
- Lake Menomin has a maximum depth of 34 feet. The lake covers 1009 acres.
What fish are in Lake Menomin?
- Fish species found in Lake Menomin include Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Walleye. Lake Menomin is located in Dunn County, Wisconsin.
What did the DNR fisheries survey find at Lake Menomin?
- Wisconsin DNR lists Panfish as common on Lake Menomin. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Lake Menomin’s water-quality measurements separately, and the water-quality trend over 3 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Lake Menomin?
- Lake Menomin has 5 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Wakanda Park, Point Comfort Park, Lakeside Park, La Pointe Park, among others. Public access is listed as yes.
Can I fish at Lake Menomin?
- Lake Menomin has 5 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Wisconsin's fish and wildlife agency, so check its current regulations before you go.
Explore Lake Menomin across LakeQuality
Depth, room, public access, and the state wake-sport rules
Fish species and the cleanest lakes across Wisconsin
Fish species and best lakes in Dunn County
Species activity outlook by water temperature and season
Where to stay at Wisconsin's top lakes, each with its readings
Wisconsin's cleanest lakes, ranked on agency measurements
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Other Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Compare Lake Menomin With Nearby Lakes
Where this data comes from
29 measurements from 1 monitoring station, 2022–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX29 samples · 2022–2026
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory