Mill Picayune Watershed Site N-13-2 Reservoir Report
Last Updated: December 14, 2025
Mill Picayune Watershed Site N-13-2, located in Woodbine, Iowa, is a dam constructed in 1961 by the USDA NRCS for fire protection, stock, or small fish pond purposes.
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Summary
The dam, made of earth with a height of 40 feet and a length of 600 feet, has a storage capacity of 118 acre-feet and covers a surface area of 7.2 acres. Situated on the North Picayune Creek, the dam serves as a flood risk reduction measure in Harrison County.
Managed by the local government and regulated by the Iowa DNR, this dam is inspected for safety and enforcement regularly. With a low hazard potential and a moderate risk assessment rating, the dam has not been assessed for its condition but is currently considered not rated. The emergency action plan status and risk management measures for the site are not provided in the data, highlighting the need for further information on the preparedness and response capabilities of this critical water resource infrastructure.
Year Completed |
1961 |
Dam Length |
600 |
Dam Height |
40 |
River Or Stream |
NORTH PICAYUNE CREEK |
Primary Dam Type |
Earth |
Surface Area |
7.2 |
Drainage Area |
0.58 |
Nid Storage |
118 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
40 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Boyer River At Logan
|
417cfs |
Soldier River At Pisgah
|
112cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Maple River At Mapleton
|
323cfs |
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 N-13-2