Little Beaver Subwatershed 5-8154 Reservoir Report
Last Updated: December 15, 2025
Little Beaver Subwatershed 5-8154, located in Woodbury County, Iowa, is a local government-owned structure designed by USDA NRCS to serve fire protection, stock, or small fish pond purposes.
°F
°F
mph
Wind
%
Humidity
Summary
This earth dam, completed in 1957, stands at a height of 36 feet and spans 350 feet in length, with a storage capacity of 162 acre-feet and a drainage area of 0.63 square miles. Situated on TR-WOLF CREEK, this dam plays a crucial role in flood risk reduction within the region.
Despite its low hazard potential and moderate risk assessment, the condition of Little Beaver Subwatershed 5-8154 is currently not rated, and it lacks an Emergency Action Plan (EAP) and updated emergency contacts. However, the dam remains under state regulation and inspection by the Iowa DNR, ensuring its continued safety and functionality. As a key feature in the local water resource management system, this dam serves as a vital asset for both environmental conservation and community protection in the area.
Year Completed |
1957 |
Dam Length |
350 |
Dam Height |
36 |
River Or Stream |
TR-WOLF CREEK |
Primary Dam Type |
Earth |
Surface Area |
4.6 |
Drainage Area |
0.63 |
Nid Storage |
162 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
36 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
West Fork Ditch At Hornick
|
80cfs |
Maple River At Mapleton
|
323cfs |
Little Sioux River At Correctionville
|
327cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Missouri River At Decatur
|
14900cfs |
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.
Little Beaver Subwatershed 5-8154