What Fish Are in O'Brien Lake?
O'Brien Lake in Itasca County, Minnesota has 10 documented fish species: black crappie, bluegill, bowfin (dogfish), hybrid sunfish, largemouth bass, northern pike, pumpkinseed, walleye, yellow bullhead, yellow perch. The lake is not rated for water quality — its monitoring record does not meet the evidence bar.
All Documented Species
black crappiebluegillbowfin (dogfish)hybrid sunfishlargemouth bassnorthern pikepumpkinseedwalleyeyellow bullheadyellow perch
Game Fish & Panfish in O'Brien Lake
O'Brien Lake supports 5 of the region's most-targeted species: black crappie, bluegill, largemouth bass, northern pike, walleye. With a water quality grade of NR and a maximum depth of 63 feet across 539 acres, the lake offers conditions consistent with the species mix DNR surveys have recorded.
Lake Conditions
| Water Quality Grade | NR (Not rated) |
| Water Clarity | 13.1 ft |
| Maximum Depth | 63 ft |
| Surface Area | 539 acres |
| Public Access | Yes |
| Species Count | 10 |