Mora Lake
Cook County, Minnesota210 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Mora Lake. Here is what has been measured.
- 40 ft max depth
- Limited data
Mora Lake in Cook County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 8.5 ft visibility. Maximum depth: 40 ft. Surface area: 210.32 acres.
Minnesota DNR's Standard Survey on September 23, 1987 caught 2.17 northern pike per gill net at Mora Lake. DNR survey details →
Mora Lake is a 210-acre lake in Cook County, Minnesota with a maximum depth of 40 feet. Overall water quality is improving over recent sampling years. Limited fish-species data available. No public access — the lake is private or restricted.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2022-07-23. Methodology: how these readings are compared.
Mora Lake covers about 210 acres in Cook County. If you are planning to stay, you can search lake houses and cabins around Mora Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
What Mora Lake is good for
From access and monitoring records, not editorial picks.
- Deep water40 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Mora 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 Mora Lake
These are the measurements Minnesota PCA publishes for Mora Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 8.5 ft. TSI 46.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 8.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| 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. | 46 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Mora Lake
Answers come straight from the public measurements and survey records on this page.
Minnesota DNR's Standard Survey on September 23, 1987 caught 2.17 northern pike per gill net at Mora Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Mora Lake’s water-quality measurements separately, and the water-quality trend over 2 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
1 survey on file from MN DNR Fisheries. Most recent: 1987-09-23 (Standard Survey).
1 survey on file · most recent 1987-09-23 (Standard Survey)
39 years old| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| White Sucker | 7.00 | 1.15 lb | |
| Northern Pike | 2.17 | 3.25 lb |
CPUE = catch per unit effort, fish caught per net per set in a standardised survey. It measures abundance, not size, and is not a weekly bite report.
From the 1987-09-23 survey
NORTHERN PIKE ARE PRESENT IN FAIR NUMBERS. GROWTH RATES ARE SLIGHTLY BELOW THE STATE AVERAGE. THERE APPEARS TO BE SOME MISSING NORTHERN PIKE YEAR CLASSES, AND NO LARGER FISH WERE TAKEN. WHITE SUCKER ARE PRESENT IN ABOVE AVERAGE NUMBERS, WITH A LARGE RANGE OF SIZES. YELLOW PERCH ARE PRESENT, PROBABLY IN LOW NUMBERS. NO…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Mora Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — MoraFisheries Lake Survey · MN DNR LakeFinder
Lake Details
Max depth
40 ft
Surface area
210 acres
Shoreline
9.9 mi
Public access
No
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
57 sq mi
HydroLAKES / HydroSHEDS
Elevation
1,617 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Stays via Stay22
Stays near Mora Lake
Compare lakeside cabins, hotels, and vacation rentals near Mora Lake in Cook 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 Mora Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
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Planning a whole trip? See where to stay at Minnesota’s top lakes →
Follow Mora Lake’s readings
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Fishing Mora Lake
Water quality readings over time
2 seasons of samples on record (2021–2022). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving2 years
Nearby Lakes in Cook County
Frequently asked questions about Mora Lake
Where is Mora Lake?
- Mora Lake is a lake in Cook County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Mora Lake?
- Mora Lake in Cook County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 8.5 ft visibility. Maximum depth: 40 ft. Surface area: 210.32 acres.
Is Mora Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Mora Lake?
- Mora Lake has a maximum depth of 40 feet. The lake covers 210.32 acres.
What did the DNR fisheries survey find at Mora Lake?
- Minnesota DNR's Standard Survey on September 23, 1987 caught 2.17 northern pike per gill net at Mora Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Mora Lake’s water-quality measurements separately, and the water-quality trend over 2 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Mora Lake?
- Public access to Mora Lake is listed as no on the lake record, so confirm before you make the trip. 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 Mora Lake across LakeQuality
Depth, room, public access, and the state wake-sport rules
Fish species and the cleanest lakes across Minnesota
Fish species and best lakes in Cook County
Species activity outlook by water temperature and season
Where to stay at Minnesota's top lakes, each with its readings
Lakes in the Lake Superior Basin (MN+WI), ranked by water quality
Minnesota's cleanest lakes, ranked on agency measurements
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Where this data comes from
2 measurements from 1 monitoring station, 2021–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA2 samples · 2021–2022
Analytical methods
- Field measurement/observation, generic method
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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder