North Branch Ralston Creek Dam

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateIowa
CountyJohnson
Nearest CityIOWA CITY
River/StreamN. BR. RALSTON CR.
Coordinates41.67000, -91.51020

Physical Characteristics

Dam TypeEarth
NID Height37 ft
Dam Height37 ft
Dam Length590 ft
Year Completed1983 (43 years old)

Storage & Hydraulics

NID Storage1,016 acre-ft
Max Storage1,016 acre-ft
Drainage Area2 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerCity of Iowa City
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection10/17/2024
Emergency Action PlanYes

Identifiers

NID IDIA02249
Federal IDIA02249
More InfoState Dam Safety Program

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