Barber Hollow Subwtrshed Site 5-H-3865 Reservoir Report
Last Updated: December 13, 2025
Barber Hollow Subwatershed Site 5-H-3865, located in Monona County, Iowa, is a dam primarily used for fire protection, stock, or small fish pond purposes.
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Summary
Constructed in 1967 by the USDA NRCS, this earth dam stands at a height of 30 feet and has a storage capacity of 22 acre-feet. Situated along the Little Sioux River, this dam plays a crucial role in flood risk reduction within the region.
With a drainage area of 0.23 square miles, Barber Hollow Subwatershed Site 5-H-3865 has a low hazard potential and is currently deemed to be in moderate risk based on a rating of 3. While the dam has not been rated for its condition assessment, it is subject to regulation, inspection, and enforcement by the Iowa Department of Natural Resources. Despite lacking certain emergency preparedness measures like an Emergency Action Plan (EAP) and inundation maps, this dam serves as a key infrastructure for water resource management in the area.
As water resource and climate enthusiasts, it is important to recognize the significance of structures like Barber Hollow Subwatershed Site 5-H-3865 in sustaining the local ecosystem and protecting against potential flooding events. This dam stands as a testament to proactive water management practices and the collaborative efforts of both local and federal agencies in ensuring the safety and resilience of communities in Monona County, Iowa.
Year Completed |
1967 |
Dam Height |
30 |
River Or Stream |
TR- LITTLE SIOUX RIVER |
Primary Dam Type |
Earth |
Surface Area |
2 |
Drainage Area |
0.23 |
Nid Storage |
22 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Maple River At Mapleton
|
323cfs |
West Fork Ditch At Hornick
|
80cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Little Sioux River At Correctionville
|
327cfs |
Missouri River At Decatur
|
15500cfs |
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.
Barber Hollow Subwtrshed Site 5-H-3865