Overview
Riverdale Flowage Map
Fishing Regulations
Special Fishing regulations: This lake has special fishing regulations that differ from statewide or border water regulations for those species identified below and take precedence. Regulations listed below are currently in place. Visit the fishing regulations page for links to upcoming regulations for specific lakes.
Special Waterbody Regulations
- Catch and release fishing for largemouth and smallmouth bass is open year round unless otherwise noted. Motor Trolling is allowed with up to 3 hooks, baits, or lures, per angler.
Special Species Regulations
- Shortnose gar: See Rough Fish.
- Cisco and whitefish: Open all year: No minimum length limit and the daily bag limit is 10
- Round goby: Open all year: The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office
- Ruffe: Open all year: The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office
- Shovelnose sturgeon: Closed. No fishing allowed.
- Catfish: Open all year: No minimum length limit and the daily bag limit is 10
- Trout and salmon: See Trout regulations layer.
- Sauger and hybrids: See Walleye, Sauger, and Hybrids.
- Longnose gar: See Rough Fish.
- Hybrid, Striped, Yellow, and White Bass: See Rock, Yellow and White Bass.
- Flathead catfish: See Catfish.
- Crappies: See Panfish.
- Channel catfish: See Catfish.
- Largemouth bass: See Largemouth and Smallmouth Bass.
- Smallmouth bass: See Largemouth and Smallmouth Bass.
- Paddlefish: Closed. No fishing allowed.
- Rock, Yellow, and White Bass: Open all year: No minimum length limit and the daily bag limit is unlimited
- Rough fish: Open all year: No minimum length limit and the daily bag limit is unlimited
- Largemouth bass and smallmouth bass: May 3, 2025 to March 1, 2026: The minimum length limit is 14” and the daily bag limit is 5
- Northern pike: May 3, 2025 to March 1, 2026: No minimum length limit and the daily bag limit is 5
- Muskellunge and hybrids: May 24, 2025 to December 31, 2025: The minimum length limit is 40” and the daily bag limit is 1
- Lake sturgeon: Closed. No fishing allowed.
- Bowfin: See Rough Fish.
- Bluegill: See Panfish.
- White perch: Open all year: The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office
- Bullheads: Open all year: No minimum length limit and the daily bag limit is unlimited
- Walleye, Saugers, and Hybrids: May 3, 2025 to March 1, 2026: The minimum length limit is 15” and the daily bag limit is 3
- Panfish: Open all year: No minimum length limit and the daily bag limit is 10
- Walleye: See Walleye, Sauger, and Hybrids.
- Urban waters gamefish: This waterbody is not considered an urban water, Urban Waters Gamefish regulations do not apply.
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Fish Species
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.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.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.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.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.| Survey Year | Largest Fish (in) |
|---|---|
| 2018 | 20 |
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.
