Michigan / Au Sable River /

Harbor Street Boat Ramp

Harbor Street Boat Ramp is a public boat ramp on the Au Sable River near Au Sable, Michigan, run by U.

Aerial view of the paved landing at the water's edge with the parking area behind, September 2022
Aerial view of the paved landing at the water's edge with the parking area behind, September 2022 Photo: USDA Farm Service Agency, NAIP · Public domain · via USGS The National Map

Status not reported No closure has been posted for this launch, but its agency does not publish open or closed status. Check with the managing agency before you tow.

At the launch

Type
Boat ramp
Car parking
15 spaces
Managed by
U
Coordinates
44.40850, -83.32810

Directions (Google) Apple Maps

Channel depths in feet from the Army Corps' surveys (Detroit District; the one nearest this launch is of May 6, 2026). Not for navigation.

Boating rules

  • Slow, no-wake speed · a zone at or next to this launch rule

From the boating rules map of Michigan Department of Natural Resources, read October 18, 2026. A map of rules is a guide: the regulation's text and the posted signs govern.

Conditions

Marine advisories

Advisories in effect load here; without them, see the NWS zone forecast below.

National Weather Service marine zone LHZ349, Sturgeon Pt to Alabaster MI. Zone forecast: winds, seas, warnings.

Water level

Latest reading loads here; without it, see the USGS page below.

USGS gauge AU SABLE RIVER NR US23 AT OSCODA, MI, 0.6 mi from this launch on Au Sable River: water level, a reading every 15 minutes. Readings and history at USGS.

Channel survey

The Army Corps surveys the channels it maintains and posts every survey.

  • AuSable Harbor · 0.2 mi from this launch
    Condition survey of May 6, 2026 by the Detroit District. Least depth in the channel (AuSable Harbor, Inner Channel): 4.6 ft; project depth 10 ft. Survey sheet (PDF)

US Army Corps of Engineers hydrographic surveys, from eHydro. A survey shows the bottom on the day it was made; channels shoal after high water and change with dredging. Not for navigation.

On Au Sable River

The Au Sable River is a 138-mile river in Michigan's northern Lower Peninsula. It begins in Frederic Township, Crawford County, where Kolke and Bradford creeks meet. From there it flows south and then east through Grayling, where the East Branch joins it. The South and North branches join in eastern Crawford County. The river then crosses Oscoda, Alcona and Iosco counties and reaches Lake Huron at Au Sable and Oscoda. Six hydroelectric dams were built in its basin between 1911 and 1924. The ponds behind five of them are used for power boating, water skiing and sailing. Most of the main stem flows through or beside the Huron-Manistee National Forest. The 23 miles from Mio Pond to Alcona Pond were designated a National Scenic River on October 4, 1984. More about Au Sable River.

Boating rules on Au Sable River

  • Slow-no wake speed from the mouth at Lake Huron upstream about 2.5 miles to the Detroit and Mackinaw railroad bridge source
  • Slow-no wake speed from the Detroit and Mackinac railroad bridge upstream to Foote Dam source
  • National Scenic River: special use permit required for commercial, event or groups of 75 or more; none for 74 or fewer source
  • National Scenic River: camping prohibited except at designated campgrounds or campsites source
  • Recreation fee (day use) at 4001 Bridge Canoe Landing source
  • Holy Waters (Burtons Landing to Wakeley Bridge): catch-and-release, fly fishing only, year-round source

Community

Where people who use Au Sable River talk about it.

Nearby launches

Sources

Why it is listed as public: s39050.pcdn.co: 34: Harbor St. Boat Launch (City). Something wrong, or is this launch private? Send a correction; it goes to a person.