The Coralville Dam
The Emergency Spillway abuts the west end of the Dam and is 500 feet wide with its lip 31 feet below the Dam's crest. The Spillway's purpose is to release flood water that other- wise would exert excessive pressure on the main dam structure.
The capacity of the Coralville Reservoir is
over 15 billion gallons of water enough
to supply water for Iowa City and Coralville
for over five years.
Topics. This historical marker is listed in this topic list: Waterways & Vessels. A significant historical year for this entry is 1958.
Location. 41° 43.306′ N, 91° 31.93′ W. Marker is near Iowa City, Iowa, in Johnson County. Marker can be reached from Prairie Du Chien Road Northeast. Touch for map. Marker is at or near this postal address: 2850 Prairie Du Chien Rd NE, Iowa City IA 52240, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within 4 miles
Credits. This page was last revised on June 7, 2021. It was originally submitted on June 6, 2021, by Connor Olson of Lemmon, South Dakota. This page has been viewed 74 times since then and 30 times this year. Photos: 1, 2. submitted on June 6, 2021, by Connor Olson of Lemmon, South Dakota. • Mark Hilton was the editor who published this page.
Editor’s want-list for this marker. A wide shot of the marker and its surroundings. • Can you help?