Rathbun Lake Marina

Rathbun Lake - Iowa's Ocean


For all boating styles and activities:
11,000 acres normal pool - Iowa largest usable lake pool
Minimal shoal water - well marked and charted
115 miles of undeveloped park and natural shoreline
Low frequency & magnitude flooding
Newly adopted 2016 water release plan to mitigate fluctuations
Minimal flood debris flow
Excellent water quality - minimal silting
Coves, creeks, channels, & beaches for all uses and boating styles
Nine mile sailing fetch and reliable summer breeze
​Legendary walleye, catfish, and crappie fishing
Destination boating, family friendly and Iowa's best sunsets


Iowa Corps of Engineers Lake Facts:

  • Rathbun Lake is the only Iowa Corps Resevior that does not receive waste water effluent discharge from Iowa's major metro areas.
  • Rathbun Lake is below expected sedimentation levels.  Red Rock, Saylorville, and Coralville are ahead of expected levels.  Red Rock has had two normal pool level increases since opening to accommodate siltation.
  • Rathbun Lake water quality allows use as both a source of drinking water by RRWA and as a primary fish hatchery by the IDNR. 
  • ​The Rathbun Land and Water Alliance has had a demonstrable impact in efforts to mitigate pollutant discharge into our lake.  The effort continues with goals that will further improve our recreational water
  • ​Variation of normal pool to maximum pool for Iowa Corps of Engineers reservoirs - Rathbun 22 feet  Saylorville 48 feet  Coralville 38 feet  Red Rock 38 feet

(641) 724-3212