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Comins Flats Boat Ramp

Au Sable River · Mio, Oscoda County

Comins Flats is a trailer boat ramp on Au Sable River in Mio, Michigan, with a fee or pass required, 9 trailer parking spaces and restrooms. It is managed by Rifle River State Recreation Area.

Launch
Trailer launch
Lanes
1
Fees
Annual pass: $15 (Michigan Recreation Passport, Michigan vehicles, bought with plate renewal. Out-of-state vehicles $42 a year or $12 a day)
Trailer parking
9 spaces
Car parking
11 spaces
Restroom
Yes
Hours
4 AM to 11 PM
Nearest town
41 mi from Alpena

Managed by Rifle River State Recreation Area

Directions

Today

Near this ramp

Places © OpenStreetMap contributors. Call ahead for hours.

Fish in Au Sable River (Crawford County)

Also recorded:

Michigan state records for these fish
FishRecordYearCaught in
Brown Trout41 lb 7 oz2009Manistee River
Northern Pike39 lb1961Dodge Lake
Rainbow Trout26 lb 8 oz1975Lake Michigan
Largemouth Bass11 lb 15 oz1934Big Pine Island Lake
Brook Trout9 lb 8 oz1996Clear Lake
Pink Salmon8 lb 9 oz1987Carp River
Yellow Perch3 lb 12 oz1947Lake Independence
Rock Bass3 lb 10 oz1965Holloway Reservoir
Bluegill2 lb 12 oz1983Vaughn Lake

From official Michigan record lists: source

Species recorded here since 1990 (GBIF). Check state regulations for seasons and limits.

Before you launch in Michigan

Michigan boating laws: education, age limits and life jackets

Links go to official Michigan agency pages.

All 14 ramps on Au Sable River (Crawford County) · All ramps in Oscoda County

New to launching? Read how to launch a boat and ramp etiquette.

Nearby boat ramps

Page updated Oct 27, 2026. Ramp details from the Michigan Department of Natural Resources and OpenStreetMap.