Portage Lake (To Lake Michigan), Onekama, Manistee County boat launch
Portage Lake (To Lake Michigan), Onekama, Manistee County
The body of water that the Portage Lake boat ramp services is Portage Lake, which is a large inland lake located in Manistee County. Portage Lake is connected to Lake Michigan through a narrow channel, which is located at the eastern end of the lake.
According to the Michigan Department of Natural Resources website, a variety of watercraft are permitted on Portage Lake, including powerboats, sailboats, kayaks, canoes, and paddleboards. However, it is important to note that all watercraft must comply with the state's boating laws and safety regulations.
It is always important to check for updates and changes to information regarding boat ramps, as conditions can change due to weather or other factors.
Plan your launch down to the hour
Same weather feed Snoflo's iOS app uses -- updated continuously from NOAA / yr.no.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Area streamflow levels
USGS streamgauges around Portage Lake (To Lake Michigan), Onekama, Manistee County -- the same readings that determine whether your launch is safe and your boat is the right craft.
| Streamgauge | Discharge | View |
|---|---|---|
| Manistee River Near Wellston | 2,120 cfs | → |
| Manistee River Near Mesick | 1,450 cfs | → |
| Platte River At Honor | 160 cfs | → |
| Pine River At High School Bridge Nr Hoxeyville | 231 cfs | → |
| Manistee River Near Sherman | 1,310 cfs | → |
| Pere Marquette River At Scottville | 717 cfs | → |
Plan a longer trip
The closest paddle runs, fishing spots, and other boat launches so you can extend a day on the water.
River runs
- Kings Road Bridge (2 Miles West Of Town Of Luther In T19n, R12w To Slackwater Of The State Fish Weir In T21n, R16w
- Southern Boundary Of Sleeping Bear Dunes National Lakeshore To Mouth At Lake Michigan
Boating safety & etiquette
- Check the conditions before you launch
- Use the streamflow numbers, weather, and wind forecast on this page. High-cfs whitewater requires whitewater-specific craft and skill.
- Wear your life jacket
- Statistically the single biggest survival factor in a boating incident. State law often requires one per passenger.
- File a float plan
- Tell someone on shore your put-in, take-out, and expected return time. Especially for multi-day or remote trips.
- Yield at the ramp
- Prep gear in the parking lot, not on the ramp. Launch and clear quickly so others can use the lane.
- Clean, drain, dry
- Inspect, clean, drain and dry your boat between waters to prevent the spread of aquatic invasive species.
Set push alerts in the Snoflo app
Save Portage Lake (To Lake Michigan), Onekama, Manistee County as a favorite, set a discharge threshold or a wind/precipitation alert, and the iOS app will push the moment conditions cross.
About Portage Lake (To Lake Michigan), Onekama, Manistee County
Can I launch a motorboat here?
Most Snoflo-tracked launches support motorboats; check the operator for any horsepower restrictions, paddle-only zones, or seasonal closures.
How fresh is the streamflow data?
USGS streamgauges report continuously (every 15 minutes); the table on this page pulls the latest reading at page load.
Is there a fee?
Many federal and state boat launches charge a day-use fee. Check the operator's site before driving out.
What boat is right for these conditions?
Use the nearby streamflow numbers and river-run panel on this page to gauge current conditions. Wider, slower water is friendly for casual paddling and powerboats; high-cfs whitewater requires whitewater-specific craft and skill.
Can I get alerts when conditions change?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this launch, set a threshold (discharge, wind), and you'll get a push the moment it crosses.
Other launches near here
Snoflo-tracked boat launches within driving distance of Portage Lake (To Lake Michigan), Onekama, Manistee County.