Mission Street Boat Launch
Mission Street Boat Launch is a public boat ramp on the St. Marys River near Sault Sainte Marie, Michigan.
Zebra mussels (latest report 2001) reported in St. Marys River 3.2 km from this launch (USGS Nonindigenous Aquatic Species database). Clean, drain and dry your boat, trailer and gear before you leave, and do not move water, plants or live bait to another water.
USGS Nonindigenous Aquatic Species database · checked October 20, 2026
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.
Channel depths in feet from the Army Corps' surveys (Detroit District; the one nearest this launch is of September 9, 2025). Not for navigation.
Conditions
- Weather forecast for this launch · National Weather Service
- Water level, flow at the ST. MARYS RIVER AT SAULT STE. MARIE, ONTARIO gauge · USGS, 0.7 mi away on St. Marys River
Water level
Latest reading loads here; without it, see the USGS page below.
USGS gauge ST. MARYS RIVER AT SAULT STE. MARIE, ONTARIO, 0.7 mi from this launch on St. Marys River: water level, flow, a reading every 15 minutes. Readings and history at USGS.
On the river
Keep well clear of dams: strong currents and restricted zones above and below them.
- Dam, 2.4 mi away (straight line; direction not known): Compensating Works, 14 ft. · Michigan EGLE dam inventory
Up to 10 river miles each way, from the agencies' inventories; not every hazard is listed and rivers change. Scout before you go.
Sources: Michigan EGLE dam inventory.
Channel survey
The Army Corps surveys the channels it maintains and posts every survey.
- Course 2 Little Rapids Channel · 0.2 mi from this launch
Condition survey of September 9, 2025 by the Detroit District. Soundings on the sheet from 11 to 40.2 ft below Low Water Datum (IGLD 1985); the Corps maintains a 28.5 ft channel here. 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 St. Marys River
The St. Marys River, sometimes written St. Mary's River, carries the outflow of Lake Superior. It begins at the end of Whitefish Bay and runs 74.5 miles southeast to the North Channel of Lake Huron, dropping 23 feet along the way. The river forms the international border between Michigan and Ontario for its whole length. Sault Ste. Marie, De Tour and Sugar Island are among the communities on the U.S. side. At the St. Marys Rapids, a set of compensating works with 16 sluice gates controls how much water leaves Lake Superior. The works were completed between 1901 and 1921, and the International Joint Commission regulates the flow. More about St. Marys River.
Community
Where people who use St. Marys River talk about it.
Nearby launches
- Aune-Osborn Park · 0.2 mi · St. Marys River
- Charles T. Harvey · 1.5 mi · St. Marys River
- Ashmun Bay Park · 3.2 mi · St. Marys River
- Sugar Island · 8.1 mi · St. Marys River
- Dumbar · 12.5 mi · Charlotte River
- Brimley State Park · 12.9 mi · Lake Superior
Sources
- OpenStreetMap n11383742330 © OpenStreetMap contributors, ODbL
Why it is listed as public: www.michiganwatertrails.org: This boat launch is located on E. Portage Avenue (Riverside Drive) on the west side of Aune-Osborn Campground.. Something wrong, or is this launch private? Send a correction; it goes to a person.