Crooked Lake
Hubbard County, MinnesotaView mapDirections
Minnesota PCA publishes the water-quality measurements for Crooked Lake. Here is what has been measured.
- Oligotrophic
- 38 ft max depth
- Public access
Crooked Lake in Hubbard County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 19 ft visibility. Phosphorus: 8 µg/L. Chlorophyll-a (algae): 2.2 µg/L.
Crooked Lake is a cold, clear oligotrophic lake in Hubbard County, Minnesota with an estimated average depth of about 38 feet. Limited fish-species data available. Public access is available. Compared to the 67 other monitored lakes in Hubbard County, Crooked Lake ranks #12 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-10-13. Methodology: how these readings are compared.
What Crooked Lake is good for
From access and monitoring records, not editorial picks.
- Clear water19 ft of visibility
Swimming conditions
Readings onlyLow algae
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. Check local advisories before you swim.
Whether Crooked Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Crooked Lake
These are the measurements Minnesota PCA publishes for Crooked Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 19 ft down. Phosphorus 8 µg/L. Chlorophyll-a 2.2 µg/L. TSI 36.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 19ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 8µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 2.2µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 36 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Crooked Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Crooked Lake typically sits around 75°F at the surface in September. Summer average is about 74°F. Usually warmest in Aug (about 75°F) and coldest in May (about 66°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (66°F) to its warmest (75°F).
Typical surface water temperature by month, from 11 field readings (2024–2025) via the EPA Water Quality Portal. See the full Crooked Lake water temperature breakdown →
Lake Details
Max depth
~38 ft est.
Public access
Yes
Listed by Minnesota PCA
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Minnesota has not published bathymetry for Crooked Lake.
Lake Size & Watershed
Watershed (drainage) area
23 sq mi
HydroLAKES / HydroSHEDS
Surface area
190 acres
HydroLAKES / HydroSHEDS
Shoreline
3.7 mi
HydroLAKES / HydroSHEDS
Elevation
1,427 ft
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.
Stays via Stay22
Stays near Crooked Lake
Compare lakeside cabins, hotels, and vacation rentals near Crooked Lake in Hubbard County, Minnesota — 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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Follow Crooked Lake’s readings
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Fishing Crooked Lake
Water Quality Trend: Stable
Based on 6 years of monitoring (2020–2025).
Water clarity
Stable6 years
Nearby Lakes in Hubbard County
Frequently asked questions about Crooked Lake
Where is Crooked Lake?
- Crooked Lake is a lake in Hubbard County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Crooked Lake?
- Crooked Lake in Hubbard County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 19 ft visibility. Phosphorus: 8 µg/L. Chlorophyll-a (algae): 2.2 µg/L.
Is Crooked Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Crooked Lake?
- Crooked Lake typically sits around 75°F at the surface in September, from 11 EPA Water Quality Portal field readings (2024–2025). That is a typical value for the month, not a live reading.
How deep is Crooked Lake?
- No published bathymetric survey covers Crooked Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 38 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Can I fish at Crooked Lake?
- Public access to Crooked Lake is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Minnesota's fish and wildlife agency, so check its current regulations before you go.
Explore Crooked Lake across LakeQuality
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Where this data comes from
308 measurements from 3 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA308 samples · 2020–2025
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
Monitoring station identifiers (3)
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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder