Mill Picayune Watershed Site P-92-1 Reservoir Report
Last Updated: December 15, 2025
Located in Woodbine, Iowa, the Mill Picayune Watershed Site P-92-1 is a vital water resource managed by the local government.
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Summary
Designed by the USDA NRCS and regulated by the Iowa DNR, this site serves multiple purposes including fire protection, stock, and small fish pond, as well as flood risk reduction. Completed in 1984, this earth dam stands at a height of 51 feet and spans 612 feet, with a storage capacity of 138 acre-feet and a drainage area of 0.3 square miles.
This low hazard potential site on the TR- Picayune CR. river features an uncontrolled spillway and a surface area of 5 acres. With a moderate risk assessment rating, this dam has not been inspected or assessed for its condition. While the emergency action plan status and risk management measures are unknown, the site remains an important asset for water management in Shelby County, Iowa. Water resource and climate enthusiasts will find this site intriguing for its design, purpose, and impact on the local ecosystem.
As a part of the Rock Island District, this watershed site plays a crucial role in water storage and management in the region. With its location in a rural area, it highlights the importance of sustainable water resource practices and the need for regular inspection and maintenance to ensure its continued functionality. Climate enthusiasts will appreciate the data and details provided about this site, showcasing the intersection of infrastructure, environmental protection, and community resilience in the face of changing climate patterns.
Year Completed |
1984 |
Dam Length |
612 |
Dam Height |
51 |
River Or Stream |
TR- PICAYUNE CR. |
Primary Dam Type |
Earth |
Surface Area |
5 |
Drainage Area |
0.3 |
Nid Storage |
138 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
51 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Boyer River At Logan
|
417cfs |
Soldier River At Pisgah
|
112cfs |
Little Sioux River Near Turin
|
1040cfs |
West Nishnabotna River At Hancock
|
154cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Maple River At Mapleton
|
323cfs |
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 P-92-1