Chase Lake
Itasca County, MinnesotaLimited DataOligotrophic
Chase Lake sits at the top of the Minnesota PCA grading rubric with an A, a mark reached by the cleanest lakes in Minnesota. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.
Trophically, Chase Lake reads as oligotrophic — nutrient-poor, clear, and ecologically more sensitive to disturbance than richer lakes. Chase Lake is unusually deep for Minnesota at 95 ft, which buffers the lake against summer warming and helps the deep water stay oxygenated. At 211 acres, Chase Lake fits the Minnesota median for monitored lakes, with 2.9 miles of shoreline. Chase Lake ranks 38 of 141 in Itasca County — solidly in the upper half of the local distribution.
No invasive species are currently listed at Chase Lake — the lake remains off the Minnesota infested-waters roster. The fishery includes walleye alongside the lake's other 10 documented species — a notable draw for Minnesota anglers. No formal public access is documented at Chase Lake — most use is by shoreline residents and their guests. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-08-19. Grade methodology: LakeGrade methodology.
Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 21.7 ft down. Trophic State Index: 33.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 21.7 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 33 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 95 ft |
| Surface Area | 211.34 acres |
| Shoreline Length | 2.9 mi |
| Littoral Zone | 32% |
| Public Access | No |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Chase Lake (14-day solunar calendar)
→ Is it safe to eat fish from Chase Lake? (mercury & PFAS guide)
→ Chase Lake fishing regulations (limits, seasons, special rules)
Location
County Ranking
Ranked #38 of 141 lakes in Itasca County
Nearby Lakes in Itasca County
More Minnesota Lake Rankings
State Parks Near Chase Lake
Other Grade A Lakes in Minnesota
Oligotrophic Lakes in Minnesota
DNR Fisheries Survey Summary
8 surveys on file from MN DNR Fisheries. Most recent: 2023-08-01 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 7.85 | 0.16 lb |
| Largemouth Bass | 5.87 | 1.01 lb |
| Northern Pike | 5.54 | 1.48 lb |
| Black Crappie | 4.00 | 0.58 lb |
| Yellow Perch | 3.01 | 0.18 lb |
| Tullibee (Cisco) | 2.41 | 0.51 lb |
CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.
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
Northern Pike
Black Crappie
From the 2023-08-01 survey
A temperature-dissolved oxygen profile was collected in the deepest basin on Chase Lake on August 1, 2023, to evaluate the amount of cold, oxygenated water (i.e., oxythermal habitat) available to Cisco, also known as Tullibee. Based on the profile, the top of the thermocline (i.e., the location in the water column…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Chase Lake. 2 reports on file.
- —Fisheries Lake Survey — ChaseFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Chase (0610)Aquatic Plant Report · MN DNR LakeFinder
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Lake details from Minnesota DNR LakeFinder
Most recent sample: 2024-08-19
Monitoring stations: 1