Size
178ac
Boat Launch
Carry-in Launch
Toilet
No
Boat Dock
Species in Flat Rock Impoundment
Smallmouth bass
Northern pike
Walleye
Largemouth bass
Perch
Crappie
Bluegill
Channel catfish
Pumpkinseed
Rock bass
White bass
Overview
Flat Rock Impoundment Map
Weather
78°Feels like 78°
82°
67°
82°67°6:26 AM
8:52 PM
4 mph
Southeast
0 in
Rain
29.77 inHg
Falling
SaturdaySa
82° / 67°
SundaySu
77° / 61°
MondayMo
80° / 61°
TuesdayTu
82° / 64°
WednesdayWe
84° / 65°
ThursdayTh
84° / 65°
Moon Phase
August 01, 2026
92% Illumination
waning gibbous, getting dimmer
SaturdaySa08/01
SundaySu08/02
MondayMo08/03
TuesdayTu08/04
WednesdayWe08/05
ThursdayTh08/06
FridayFr08/07
Get Your Line in the Right Water
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Top Fish Species
Smallmouth bass
10-19 in
Length Range
14 in
Length Range
2017
Surveyed
Abundance (CPUE)
Understanding Abundance
Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time
Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.Species Lengths
