Three Rivers Impoundment sits at the confluence of the St. Joseph River, Rocky River, and Portage River — all three flow into this stretch, which is why the city is called Three Rivers. The St. Joseph River continues southwest from here, eventually crossing into Indiana and emptying into Lake Michigan at St. Joseph/Benton Harbor.
As a river impoundment, ice formation is influenced by current from three converging rivers. Ice thickness can be highly variable, especially near inflows and the dam. Always test ice carefully and avoid areas with visible current.
Where is Three Rivers Impoundment?
Is there a public boat launch on Three Rivers Impoundment?
What fish are in Three Rivers Impoundment?
Can you canoe or kayak on Three Rivers Impoundment?
Are there campgrounds near Three Rivers Impoundment?
Is Three Rivers Impoundment a lake or a river?
Can you ice fish on Three Rivers Impoundment?
Three Rivers Impoundment is a dammed section of the Saint Joseph River in the city of Three Rivers, where the St. Joseph, Rocky, and Portage rivers converge — hence the city's name. The impoundment creates a widened, lake-like pool on the St. Joseph River that's popular for casual boating, fishing, and river access. It's a relatively small, shallow impoundment typical of southern Michigan river dams, so expect current, variable water levels, and a riverine feel rather than a true lake experience.
The single public launch has good trailer parking and restroom facilities, though boaters should note the ramp drops off steeply near shore then transitions to shallow water — worth being cautious with longer lower units. Fishing targets the typical warm-water river species: smallmouth bass, largemouth bass, channel catfish, and panfish. The surrounding area has a couple of canoe-oriented campgrounds — Camp Blue Canoe and Hoshel Canoe County Park — reflecting the fact that this stretch of the St. Joseph River system is well-suited for paddling and small-boat recreation.