M-66
M-66 is a public boat ramp on the Thornapple River near Nashville, Michigan, run by the Michigan DNR Parks and Recreation.

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
- Managed by
- Michigan DNR Parks and Recreation
- Coordinates
- 42.60769, -85.09426
Conditions
- Weather forecast for this launch · National Weather Service
- Water level, flow at the THORNAPPLE RIVER NEAR HASTINGS, MI gauge · USGS, 7.3 mi away on Thornapple River
Water level
Latest reading loads here; without it, see the USGS page below.
USGS gauge THORNAPPLE RIVER NEAR HASTINGS, MI, 7.3 mi from this launch on Thornapple River: water level, flow, a reading every 15 minutes. Readings and history at USGS.
On Thornapple River
The Thornapple River is an 88-mile tributary of the Grand River in Michigan. It rises in Eaton Township, Eaton County, about 7 miles east of Charlotte, and flows generally west and north through Eaton and Barry counties. It joins the Grand at Ada in Kent County, 10 miles east of Grand Rapids. The Coldwater River is its major tributary. Its watershed covers about 876 square miles and is the largest subbasin of the Lower Grand River Watershed. Thornapple Lake, a natural lake, lies on the river. Below it, dams at Irving, Middleville, LaBarge (Caledonia), Cascade and Ada create a series of heavily developed reservoirs. The Cascade dam is owned by Cascade Township. A seventh dam, at Nashville, was removed in 2009. More about Thornapple River.
Community
Where people who use Thornapple River talk about it.
- Thornapple River Watershed Council Association
- Lower Grand River Organization of Watersheds - Thornapple River Association
- Cascade Thornapple River Association Association
- Thornapple River Watershed Council (Facebook) Facebook
- Search Reddit: r/Michigan Reddit
- Search all of Reddit for Thornapple River, Michigan Reddit
Nearby launches
- Reed Street · 1.0 mi · Thornapple River
- Mason Road · 2.1 mi · Thornapple River
- Thornapple Lake Road · 2.9 mi · Thornapple River
- Thornapple Lake Boat Launch · 4.5 mi · Thornapple Lake
- Charlton Park · 5.3 mi · Thornapple Lake
- Saubee Lake Boat Launch · 8.6 mi · Saubee Lake
Sources
- Michigan DNR Boat Launches (DNR inventory layer) record A-08-037 · Public record of the State of Michigan; no restrictions on use stated
Why it is listed as public: listed by Michigan DNR Boat Launches (DNR inventory layer). Something wrong, or is this launch private? Send a correction; it goes to a person.