Union County Boat Ramps, Iowa
Union County tracks 12 public boat ramps in total, spread across 4 different rivers, creeks and lakes — most notably Green Valley Lake (4 ramps), Threemile Creek (3 ramps) and Twelvemile Creek (3 ramps). Each listing below shows which waterbody it's on, so you can tell at a glance which ones actually connect.
Sourced from official state and federal agency records, last synced on July 7, 2026. Read more about how we verify this data.
All boat ramps in Union County
Waterways in Union County
These are the rivers, creeks and lakes with public boat ramps in Union County. Ramps on the same waterway don't always sit close together on a map — some of these stretch across the whole county.
Boat ramps in neighboring counties
If Union County doesn't have what you're looking for, these bordering counties are worth a look too.