Steamboat Rock Dam Reservoir Report
Last Updated: December 12, 2025
Steamboat Rock Dam, located in Steamboat Rock, Iowa, is a state-owned structure built in 1930 for the primary purpose of recreation along the Iowa River.
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Summary
With a gravity dam type and a height of 12 feet, the dam has a storage capacity of 355 acre-feet and covers a surface area of 60 acres. The dam is regulated by the Iowa Department of Natural Resources and is inspected, permitted, and enforced by the state agency to ensure its safety and functionality.
The dam's low hazard potential and moderate risk assessment make it a reliable structure for water resource and climate enthusiasts to explore and appreciate. While the dam has not been rated for its condition, it continues to serve its purpose of providing recreational opportunities to the community. With its location in the Rock Island District and proximity to the city of Steamboat Rock, the Steamboat Rock Dam stands as a testament to the importance of sustainable water resource management and the role of dams in providing environmental and recreational benefits.
As a part of the larger water management system in Iowa, Steamboat Rock Dam contributes to the overall drainage area of 730 square miles while offering a serene and picturesque setting for outdoor activities. Despite its uncontrolled spillway type, the dam's design and construction have stood the test of time, showcasing the ingenuity and engineering prowess of its builders. For water resource and climate enthusiasts, Steamboat Rock Dam provides a fascinating glimpse into the intersection of human intervention and natural ecosystems, highlighting the importance of responsible stewardship and conservation efforts in preserving our water resources for future generations.
Year Completed |
1930 |
Dam Length |
210 |
Dam Height |
12 |
River Or Stream |
IOWA RIVER |
Primary Dam Type |
Gravity |
Surface Area |
60 |
Drainage Area |
730 |
Nid Storage |
355 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Steamboat Rock Dam