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Pokegama Lake

Itasca County, MinnesotaLimited DataOligotrophic

On the LakeGrade rubric, Pokegama Lake pulls an A: clarity at 17.5 ft and phosphorus readings still being added put it in the top bracket for Minnesota.

A TSI value of 36 puts Pokegama Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. At 112 ft of maximum depth, Pokegama Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. With 6,721 acres of surface and 57.2 miles of shoreline, Pokegama Lake is a large water by Minnesota standards — recreational pressure is spread across a long shoreline. Among the 141 graded lakes in Itasca County, Pokegama Lake ranks 31 — in the top quartile locally.

Pokegama Lake is on the Minnesota infested-waters list for zebra mussels — boaters should follow clean-drain-dry protocols when moving gear to or from the lake. Muskie are on the species list at Pokegama Lake, among the lake's 19 documented fish. A documented public access point at Pokegama Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The lake has a long ice-out record — 69 observations on file, with a median ice-out around Apr 27. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2021-07-22. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

Crystal clear, you can see 17.5 ft down. Trophic State Index: 36.

MetricValueGrade
Water Clarity (Secchi Depth)17.5 ftA
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)36Oligotrophic

Low nutrients, clear water, excellent for swimming

Lake Details

CharacteristicValue
Maximum Depth112 ft
Surface Area6.7K acres
Shoreline Length57.2 mi
Littoral Zone29%
Public AccessYes

Fish Species

black crappie,bluegill,bowfin (dogfish),brown bullhead,green sunfish,hybrid sunfish,largemouth bass,muskellunge,northern pike,pumpkinseed,rainbow smelt,rock bass,silver redhorse,smallmouth bass,tullibee (cisco),walleye,white sucker,yellow bullhead,yellow perch

Click a species to see all Minnesota and Wisconsin lakes where it is found.

→ Best fishing times for Pokegama Lake (14-day solunar calendar)

→ Is it safe to eat fish from Pokegama Lake? (mercury & PFAS guide)

Pokegama Lake fishing regulations (limits, seasons, special rules)

Invasive & Introduced Species

Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.

starry stonewortzebra mussel

Water Quality Trend: Improving

Based on 4 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Stable+0.057 m/yr4
Phosphorus Improving-0.35 µg/L/yr4
See year-by-year chart →

Ice Season

Historical ice data from Minnesota DNR (70 observations).

Typical Ice-Out
Apr 27
EarliestLatest
Ice-Out2012-03-27 (2012)2013-05-17 (2013)
Ice-In2017-12-07 (2017)2017-12-07 (2017)

Most recent ice-out: 2023-05-06

Location

Loading map…

County Ranking

Ranked #31 of 141 lakes in Itasca County

Nearby Lakes in Itasca County

DNR Fisheries Survey Summary

22 surveys on file from MN DNR Fisheries. Most recent: 2024-06-17 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
Yellow Perch20.680.12 lb
Bluegill8.540.21 lb
CNM6.66
Largemouth Bass6.640.83 lb
RBS4.910.04 lb
Smallmouth Bass4.681.39 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.

Yellow Perch

9 fish · 610 in · 2024-06-17
530678910

Bluegill

354 fish · 39 in · 2024-06-17
103520trophy 103456789

Largemouth Bass

1 fish · 22 in · 2023-10-09
102

RBS

106 fish · 45 in · 2023-10-09
9146045

From the 2024-06-17 survey

Pokegama Lake is in ecological lake class 22 and is located just southwest of Grand Rapids, MN, in the Mississippi River Watershed. The lake is 6,721 acres and has a maximum depth of 112 feet. Area Fisheries staff conducted a targeted survey setting 15 trap nets on 16 June, 2024 and began nearshore fish species…

Source: MN DNR LakeFinder Fisheries Lake Survey

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Pokegama Lake. 5 reports on file.

Reservoir Info (USACE NID)

Pokegama Lake is a man-made reservoir impounded by the Pokegama Dam - Dikes 4 and 5 (completed 1884), built primarily for recreation on the MISSISSIPPI; concrete-type dam, 17 ft tall and 385 ft long.

Surface area
13,000 ac
Normal storage
82,000 ac-ft
Max storage
120,000 ac-ft
Drainage area
660 sq mi
Hazard class
Significant
Owner
USACE - St. Paul District

All listed purposes: Recreation;Navigation;Fish and Wildlife Pond;Water Supply;Flood Risk Reduction.

Source: USACE National Inventory of Dams, NID ID MN00584 · Operator website

EPA Impairment Status

Pokegama Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

Mercury

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit MN31-0532-01 · Official waterbody report · Matched by proximity (1.53 km)

Data Sources

Water quality data from the EPA Water Quality Portal

Impairment status from EPA ATTAINS 303(d) database

Grading methodology based on Metropolitan Council standards

Lake details from Minnesota DNR LakeFinder

Ice data from Minnesota DNR Climate

Most recent sample: 2021-07-22

Monitoring stations: 1