Mosinee Flowage
Mosinee Flowage in Marathon County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 936 acres.
- Area
- 936 acres
- Public access
- Yes
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Why Mosinee Flowage has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Mosinee Flowage, no water-quality sampling on record for this lake.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by WI DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Mosinee Flowage is a 936-acre lake in Marathon County, Wisconsin. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Mosinee Flowage water quality
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Mosinee Flowage
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Mosinee Flowage
Compare lakeside cabins, hotels, and vacation rentals near Mosinee Flowage in Marathon 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.
Top-rated places to stay near Mosinee Flowage
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 936 acres |
| Public Access | Yes |
No bathymetric survey has been published for Mosinee Flowage, so its depth is not documented here.
Recreation & Access
- River ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Mosinee Flowage
Nearby Lakes in Marathon County
Frequently asked questions about Mosinee Flowage
Where is Mosinee Flowage?
- Mosinee Flowage is a lake in Marathon County, Wisconsin. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Mosinee Flowage?
- Mosinee Flowage in Marathon County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 936 acres.
Is Mosinee Flowage safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Mosinee Flowage is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Mosinee Flowage?
- Mosinee Flowage has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include River Park. Public access is listed as yes.
Explore Mosinee Flowage across LakeQuality
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Where this data comes from
Measurements for Mosinee Flowage come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory