Union Lake (Branch County)
Union Lake is an impoundment of the St. Joseph River in northwestern Branch County, about 1.4 miles southwest of Union City. It is known for bluegill and good largemouth bass numbers.
Species
Fishery rating out of 5.
Bluegill
Most common fish in the 2021 DNR survey
Largemouth Bass
14 inch legal size; growth slightly above average
Crappie
A strong year class is coming along
Yellow Perch
Schools on mud and sand flats. Great through the ice.
Smallmouth Bass
Fewer than largemouth but in good numbers
Channel Catfish
Fish of 22 to 30 inches were sampled
Boat launches
2 launch sites. Fees and hours change, so confirm before you go.
- DNR boating access site (north shore)RampConcrete ramp, open year round, parking for at least 10 trailers. Crowded during tournaments and busy weekends.Directions ↗
- More public accessPublicSee the Michigan DNR or lake website for all ramps and feesDirections ↗
Size & creel limits
Minimum size and daily limit for each species in Union Lake (Branch County) are published by the state. Look up the current size and creel limits for this lake directly: Michigan Department of Natural Resources ↗
Bait & tackle nearby
No shops listed yet for this lake. Use the search link below.
Search more bait shops near Union Lake (Branch County) ↗Local tips
- The lake is shallow, with a 16 foot maximum, so fish the 5 to 10 foot flats.
- Go early on busy weekends and tournament days because the lot is small.
- Walleye are rare here, so target panfish and bass.
View on interactive map
Zoom and pan on a street, satellite or terrain map. Red pins are boat launches.
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Always wear a life jacket and check your state's current regulations before you fish.