Crooked Lake
Crooked Lake in Burnett County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 10.5 ft visibility. Maximum depth: 13 ft. Surface area: 250 acres.
- Clarity
- 10.5 ft
- Max depth
- 13 ft
- Area
- 250 acres
- Trend
- ↑ Improving
- Public access
- Yes
Next lake in Burnett County
Why Crooked 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 Crooked Lake, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. 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.
Crooked Lake is a 250-acre lake in Burnett County, Wisconsin with a maximum depth of 13 feet. Overall water quality is improving over recent sampling years. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2022-07-13. 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 Crooked Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Good clarity, visible to about 10.5 ft. Trophic State Index: 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.5 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Crooked Lake
Compare lakeside cabins, hotels, and vacation rentals near Crooked Lake in Burnett 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 Crooked Lake
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Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Blue-Green Algae (Cyanobacteria)
There’s no recent EPA CyAN cyanobacteria estimate for Crooked Lake — clouds, ice, or an off-season gap in coverage. The most recent reading was high (178,649 cells/mL) on May 16, 2026.
Blue-green algae can appear and clear within days, so check your state’s current advisory before swimming. EPA CyAN ↗
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 13 ft |
| Surface Area | 250 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Crooked LakePublic
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Crooked Lake
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2022).
Fish Species (DNR-rated)
Water Quality Trend: ↑ Improving
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +1 m/yr | 3 |
Graded lakes near Crooked Lake
Crooked Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Burnett County
Frequently asked questions about Crooked Lake
What is the water quality grade for Crooked Lake?
- Crooked Lake in Burnett County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 10.5 ft visibility. Maximum depth: 13 ft. Surface area: 250 acres.
Is Crooked Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Crooked 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 Crooked Lake?
- Crooked Lake has a maximum depth of 13 feet. The lake covers 250 acres.
What fish are in Crooked Lake?
- Fish species found in Crooked Lake include Panfish, Largemouth Bass, Northern Pike. Crooked Lake is located in Burnett County, Wisconsin.
Does Crooked Lake have blue-green algae?
- There is no recent EPA CyAN cyanobacteria estimate for Crooked Lake (clouds, ice, or an off-season gap). The most recent reading was high (178,649 cells/mL). Blue-green algae can appear and clear within days, so check Wisconsin's current advisory before swimming.
Are there boat ramps on Crooked Lake?
- Crooked Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Crooked Lake. Public access is listed as yes.
Explore Crooked Lake across LakeGrade
Depth, room, public access, and the state wake-sport rules
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Fish species and best lakes in Burnett County
Species activity outlook by water temperature and season
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Lakes in the St. Croix Watershed, ranked by water quality
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Where this data comes from
11 measurements from 1 monitoring station, 2020–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX11 samples · 2020–2022
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
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