Mill Picayune Watershed Site M-24-15 Reservoir Report
Last Updated: December 14, 2025
Located in the heart of Shelby, Iowa, the Mill Picayune Watershed Site M-24-15 is a vital water resource managed by local government authorities.
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Summary
Designed by USDA NRCS, this site plays a crucial role in fire protection, stock, and small fish pond management, as well as flood risk reduction. With a dam height of 31 feet and a storage capacity of 34 acre-feet, this earth dam completed in 1963 serves as a key component in water management and conservation efforts in the region.
The Mill Picayune Watershed Site M-24-15 is regulated by the Iowa Department of Natural Resources, ensuring proper inspection, enforcement, and permitting procedures are in place to safeguard the surrounding environment. With a low hazard potential and a moderate risk assessment rating, this site presents a balanced approach to water resource management. While the specific condition assessment is not rated, the site remains a critical asset for maintaining water quality and availability in the Shelby area.
As part of the Rock Island District, the Mill Picayune Watershed Site M-24-15 offers a glimpse into the strategic collaboration between federal and local agencies in managing water resources. With a focus on sustainability and conservation, this site exemplifies the importance of effective dam infrastructure for maintaining ecological balance and ensuring water security in the face of changing climate patterns.
Year Completed |
1963 |
Dam Length |
418 |
Dam Height |
31 |
River Or Stream |
MILL CREEK |
Primary Dam Type |
Earth |
Surface Area |
2.9 |
Drainage Area |
1.55 |
Nid Storage |
34 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Boyer River At Logan
|
417cfs |
Soldier River At Pisgah
|
112cfs |
Little Sioux River Near Turin
|
1040cfs |
Maple River At Mapleton
|
323cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
West Nishnabotna River At Hancock
|
154cfs |
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.
Mill Picayune Watershed Site M-24-15