Boot Lake
Anoka County, Minnesota91 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Boot Lake. Here is what has been measured.
- Mesotrophic
- 19 ft max depth
- Limited data
Boot Lake in Anoka County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 6.7 ft visibility. Phosphorus: 31 µg/L. Chlorophyll-a (algae): 4.9 µg/L. Maximum depth: 19 ft. Surface area: 91.39 acres.
Minnesota DNR's Standard Survey on June 30, 1959 caught 4.50 northern pike per gill net at Boot Lake. DNR survey details →
Boot Lake is a 91-acre mesotrophic lake in Anoka County, Minnesota with a maximum depth of 19 feet. Overall water quality is declining over recent sampling years. Limited fish-species data available. No public access — the lake is private or restricted. Compared to the 22 other monitored lakes in Anoka County, Boot Lake ranks #11 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2021-09-16. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLimited data
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 Boot 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 Boot Lake
These are the measurements Minnesota PCA publishes for Boot 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 6.7 ft. Phosphorus 31 µg/L. Chlorophyll-a 4.9 µg/L. TSI 50.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 6.7ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 31µg/L | Fair GoodFairPoor |
| Chlorophyll-a (algae) | 4.9µg/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. | 50 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Boot Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Boot Lake typically sits around 67°F at the surface in September. Summer average is about 75°F. Usually warmest in Jul (about 77°F) and coldest in May (about 59°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (59°F) to its warmest (77°F).
Typical surface water temperature by month, from 20 field readings (2019–2021) via the EPA Water Quality Portal. See the full Boot Lake water temperature breakdown →
Minnesota DNR's Standard Survey on June 30, 1959 caught 4.50 northern pike per gill net at Boot Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Boot Lake’s water-quality measurements separately, and the water-quality trend over 5 years of monitoring is declining. 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: 1959-06-30 (Standard Survey).
1 survey on file · most recent 1959-06-30 (Standard Survey)
67 years old| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Brown Bullhead | 80.75 | 0.36 lb | |
| Yellow Perch | 8.85 | 0.21 lb | |
| Bluegill | 8.35 | 0.19 lb | |
| Black Crappie | 5.55 | 0.23 lb | |
| Pumpkinseed | 4.55 | 0.22 lb | |
| Black Bullhead | 2.55 | 0.26 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 1959-06-30 survey
This lake is entirely within the boundaries of a Scientific and Natural Area and as such: It is CLOSED to any fishing or boating activity. There is NO public access on the lake.
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Boot Lake. 2 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — BootFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Boot (1368)Aquatic Plant Report · MN DNR LakeFinder
Lake Details
Max depth
19 ft
Surface area
91 acres
Shoreline
2.6 mi
Public access
No
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
0 sq mi
HydroLAKES / HydroSHEDS
Elevation
889 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Stays via Stay22
Stays near Boot Lake
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Top-rated places to stay near Boot Lake
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Fishing Boot Lake
Water Quality Trend: Worsening
Based on 5 years of monitoring (2020–2024).
Water clarity
Worsening5 years
Phosphorus
Worsening+3.83 µg/L/yr2 years
Chlorophyll-a
Worsening+4.73 µg/L/yr2 years
Nearby Lakes in Anoka County
Frequently asked questions about Boot Lake
Where is Boot Lake?
- Boot Lake is a lake in Anoka County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Boot Lake?
- Boot Lake in Anoka County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 6.7 ft visibility. Phosphorus: 31 µg/L. Chlorophyll-a (algae): 4.9 µg/L. Maximum depth: 19 ft. Surface area: 91.39 acres.
Is Boot 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 Boot Lake?
- Boot Lake typically sits around 67°F at the surface in September, from 20 EPA Water Quality Portal field readings (2019–2021). That is a typical value for the month, not a live reading.
How deep is Boot Lake?
- Boot Lake has a maximum depth of 19 feet. The lake covers 91.39 acres.
What did the DNR fisheries survey find at Boot Lake?
- Minnesota DNR's Standard Survey on June 30, 1959 caught 4.50 northern pike per gill net at Boot Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Boot Lake’s water-quality measurements separately, and the water-quality trend over 5 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Boot Lake?
- Public access to Boot 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 Boot Lake across LakeQuality
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Where this data comes from
39 measurements from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA39 samples · 2021
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
- Turbidity, Nephelometric Method
- Turbidity by Nephelometry
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