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
59°Feels like 59°
63°
50°
63°50°7:19 AM
7:32 PM
9 mph
Northeast
0 in
Rain
30.09 inHg
Stable
MondayMo
63° / 50°
TuesdayTu
63° / 52°
WednesdayWe
62° / 51°
ThursdayTh
63° / 50°
FridayFr
66° / 48°
SaturdaySa
68° / 51°
Moon Phase
September 21, 2026
74% Illumination
waxing gibbous, getting brighter
MondayMo09/21
TuesdayTu09/22
WednesdayWe09/23
ThursdayTh09/24
FridayFr09/25
SaturdaySa09/26
SundaySu09/27
Get Your Line in the Right Water
Quickly find the best places to fish and plan your day right.
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
