Kroon Lake
Chisago County, Minnesota193 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Kroon Lake. Here is what has been measured.
- Mesotrophic
- Impaired · Impaired biota (cause unknown)
- Eurasian watermilfoil
- 30 ft max depth
- Public access
Kroon Lake in Chisago County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 5.9 ft visibility. Phosphorus: 22 µg/L. Chlorophyll-a (algae): 5.3 µg/L. Maximum depth: 30 ft. Surface area: 193.18 acres.
Minnesota DNR's Targeted Survey on September 5, 2025 caught 1.39 northern pike per hour of electrofishing at Kroon Lake. Length samples in the latest survey that recorded them ran 18–32 inches. DNR survey details →
Kroon Lake is a 193-acre mesotrophic lake in Chisago County, Minnesota with a maximum depth of 30 feet (5-foot average). Overall water quality is improving over recent sampling years. The lake supports 13 documented fish species including black bullhead, black crappie, and bluegill. Public access is available with 1 public boat landing. Compared to the 29 other monitored lakes in Chisago County, Kroon Lake ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-19. Methodology: how these readings are compared.
Kroon Lake covers about 190 acres in Chisago County. It has one public boat landing. The median ice-out date is April 14, which is when the open-water season begins. Vrbo is where to look for cabins and lake homes around Kroon Lake, and Booking.com and Expedia search hotels near the lake for your dates.
What Kroon Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Fishing13 species recorded
- Ice seasonIce-out around Apr 14
- Deep water30 ft surveyed max depth
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. Kroon Lake is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury. Check local advisories before you swim.
Whether Kroon 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 Kroon Lake
These are the measurements Minnesota PCA publishes for Kroon Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 5.9 ft. Phosphorus 22 µg/L. Chlorophyll-a 5.3 µg/L. TSI 49.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 5.9ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 22µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 5.3µg/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. | 49 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Kroon Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Kroon Lake typically sits around 69°F at the surface in September. Summer average is about 74°F. Usually warmest in Jul (about 77°F) and coldest in May (about 61°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (61°F) to its warmest (77°F).
Typical surface water temperature by month, from 45 field readings (2011–2025) via the EPA Water Quality Portal. See the full Kroon Lake water temperature breakdown →
Minnesota DNR's Targeted Survey on September 5, 2025 caught 1.39 northern pike per hour of electrofishing at Kroon Lake. Length samples in the latest survey that recorded them ran 18–32 inches.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Kroon Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
10 surveys on file from MN DNR Fisheries. Most recent: 2025-09-05 (Targeted Survey).
10 surveys on file · most recent 2025-09-05 (Targeted Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Bluegill | 51.77 | 2–8 in 2025-05-28 | 0.13 lb |
| Largemouth Bass | 15.84 | 3–17 in 2025-05-28 | 0.96 lb |
| Black Crappie | 7.92 | 4–11 in 2025-05-28 | 0.2 lb |
| Bluntnose Minnow | 6.99 | ||
| Northern Pike | 5.00 | 18–32 in 2025-05-28 | 2.81 lb |
| Pumpkinseed | 4.76 | 3–7 in 2025-05-28 | 0.2 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.
Length Distributions
Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.
Bluegill
Largemouth Bass
Black Crappie
Northern Pike
From the 2025-09-05 survey
A targeted survey of the nearshore fish community was conducted by Hinckley fisheries staff on Kroon Lake on September 5, 2025. Nearshore sampling captured 16 species of fish: Banded Kilifish, Black Crappie, Bluegill, Bluntnose Minnow, Central Mudminnow, Golden Shiner, Green Sunfish, Hybrid Sunfish, Iowa Darter,…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Kroon Lake. 2 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — KroonFisheries Lake Survey · MN DNR LakeFinder
- —Public Water Access Sites — KroonPublic Water Access Sites · MN DNR LakeFinder
Lake Details
Max depth
30 ft
Average depth
5 ft
Surface area
193 acres
Shoreline
2.4 mi
Littoral zone
78%
Share shallower than 15 ft
Public access
Yes
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
3 sq mi
HydroLAKES / HydroSHEDS
Elevation
892 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Kroon LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Kroon Lake
Compare lakeside cabins, hotels, and vacation rentals near Kroon Lake in Chisago 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 Kroon Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Minnesota’s top lakes →
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Fish Species
Click a species to see every lake where it is documented.
Fishing Kroon Lake
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: Improving
Based on 6 years of monitoring (2020–2025).
Water clarity
Improving6 years
Phosphorus
Improving-4.22 µg/L/yr6 years
Chlorophyll-a
Improving-4.49 µg/L/yr6 years
Ice season
Typical ice-out
Apr 14
Earliest Mar 31, 2015 · Latest Apr 26, 2014
Most recent ice-out
Apr 14
2022
4 observations · Minnesota PCA ice records
EPA Impairment Status
Kroon Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN13-0013-00 · Official waterbody report
Nearby Lakes in Chisago County
Frequently asked questions about Kroon Lake
Where is Kroon Lake?
- Kroon Lake is a lake in Chisago County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Kroon Lake?
- Kroon Lake in Chisago County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 5.9 ft visibility. Phosphorus: 22 µg/L. Chlorophyll-a (algae): 5.3 µg/L. Maximum depth: 30 ft. Surface area: 193.18 acres.
Is Kroon Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Kroon Lake is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury. Check local advisories before you swim.
What is the water temperature of Kroon Lake?
- Kroon Lake typically sits around 69°F at the surface in September, from 45 EPA Water Quality Portal field readings (2011–2025). That is a typical value for the month, not a live reading.
How deep is Kroon Lake?
- Kroon Lake has a maximum depth of 30 feet and an average depth of 5 feet. The lake covers 193.18 acres.
What fish are in Kroon Lake?
- Fish species found in Kroon Lake include black bullhead, black crappie, bluegill, bowfin (dogfish), brown bullhead, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, walleye, yellow bullhead, yellow perch. Kroon Lake is located in Chisago County, Minnesota.
What did the DNR fisheries survey find at Kroon Lake?
- Minnesota DNR's Targeted Survey on September 5, 2025 caught 1.39 northern pike per hour of electrofishing at Kroon Lake. Length samples in the latest survey that recorded them ran 18–32 inches. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Kroon Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
When does Kroon Lake thaw?
- Kroon Lake typically has ice-out around Apr 14.
Are there boat ramps on Kroon Lake?
- Kroon Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Kroon Lake. Public access is listed as yes.
Can I fish at Kroon Lake?
- Kroon Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. 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 Kroon Lake across LakeQuality
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Where this data comes from
87 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA87 samples · 2020–2025
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Two Reagent Colorimetry
- Phosphorus by Colorimetry
- 10200 H 2 ~ Chlorophyll a-b-c Determination by spectrophotometer
- 10200 H ~ Chlorophyll a-b-c Determination
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
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder
Named boat-access points from the USGS National Boat Ramps inventory
Ice data from Minnesota DNR Climate