Little Egypt Subwatershed 5-3052 Reservoir Report
Last Updated: December 14, 2025
Little Egypt Subwatershed 5-3052, located in Woodbury County, Iowa, is a vital water resource managed by the local government and regulated by the Iowa Department of Natural Resources.
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Summary
This earth dam, completed in 1960 by the USDA NRCS, serves multiple purposes including fire protection, stock, small fish pond maintenance, and flood risk reduction. With a dam height of 44 feet and a storage capacity of 55 acre-feet, this structure covers a surface area of 2.6 acres and drains a 0.23 square mile area, contributing to the TR-West Fork Little Sioux River.
Despite its low hazard potential, Little Egypt Subwatershed 5-3052 has a moderate risk assessment rating, indicating the need for careful monitoring and management. Currently, the dam's condition assessment is not rated, highlighting the importance of regular inspections and maintenance to ensure its structural integrity and safety. While there are no emergency action plans in place, the local government and relevant agencies are responsible for overseeing operations, inspections, and enforcement to uphold the dam's functionality and mitigate potential risks to the surrounding community and environment.
This earth dam in Rolly Springs, Iowa, plays a crucial role in water resource management and flood control, reflecting the collaborative efforts between local and federal agencies. With its strategic location and multiple functions, Little Egypt Subwatershed 5-3052 serves as a key asset in protecting the local ecosystem and ensuring sustainable water management practices in the region.
Year Completed |
1960 |
Dam Length |
500 |
Dam Height |
44 |
River Or Stream |
TR-WEST FORK LITTLE SIOUX RIV |
Primary Dam Type |
Earth |
Surface Area |
2.6 |
Drainage Area |
0.23 |
Nid Storage |
55 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
44 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
West Fork Ditch At Hornick
|
80cfs |
Missouri River At Sioux City
|
13700cfs |
Omaha Cr At Homer
|
45cfs |
Little Sioux River At Correctionville
|
327cfs |
Floyd River At James
|
187cfs |
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.
Little Egypt Subwatershed 5-3052