Crowley Flowage Lake
Crowley Flowage Lake in Price County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3.1 ft visibility. Surface area: 422 acres.
- Clarity
- 3.1 ft
- Max depth
- ~46 ft est.
- Area
- 422 acres
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Why Crowley Flowage Lake has no grade
We grade a lake only when its monitoring record clears the evidence bar: 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 Crowley Flowage Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
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.
Crowley Flowage Lake is a 422-acre lake in Price County, Wisconsin with an estimated average depth of about 46 feet. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2020-08-12. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Crowley Flowage Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 3.1 ft of visibility. Trophic State Index: 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.1 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Crowley Flowage Lake
Compare lakeside cabins, hotels, and vacation rentals near Crowley Flowage Lake in Price 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.
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~46 ft est. |
| Average Depth | ~13 ft est. |
| Surface Area | 422 acres |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Wisconsin has not published bathymetry for Crowley Flowage Lake.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Recreation & Access
- Flambeau River (SixmileSemi-private
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Crowley Flowage Lake
Reservoir Info (USACE NID)
Crowley Flowage Lake is a man-made reservoir impounded by the Crowley (completed 1930), built primarily for hydroelectric on the North Fork Flambeau; gravity-type dam, 23 ft tall and 513 ft long.
- Surface area
- 422 ac
- Normal storage
- 3,540 ac-ft
- Max storage
- 3,540 ac-ft
- Drainage area
- 820 sq mi
- Hazard class
- High
- Owner
- Flambeau Hydro, Llc
Source: USACE National Inventory of Dams, NID ID WI00788 · Operator website
EPA Impairment Status
Crowley Flowage Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit WI10003669 · Official waterbody report · Matched by proximity (2.81 km)
Graded lakes near Crowley Flowage Lake
Crowley Flowage Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Price County
Frequently asked questions about Crowley Flowage Lake
Where is Crowley Flowage Lake?
- Crowley Flowage Lake is a lake in Price County, Wisconsin. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Crowley Flowage Lake?
- Crowley Flowage Lake in Price County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3.1 ft visibility. Surface area: 422 acres.
Is Crowley Flowage Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Crowley Flowage Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Crowley Flowage Lake?
- No published bathymetric survey covers Crowley Flowage Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 46 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 422 acres.
Are there boat ramps on Crowley Flowage Lake?
- Crowley Flowage Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Flambeau River (Sixmile.
Explore Crowley Flowage Lake across LakeGrade
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Where this data comes from
3 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX3 samples · 2020
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
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory