Lum Hollow Subwatershed 9-3544 Reservoir Report
Last Updated: December 13, 2025
Lum Hollow Subwatershed 9-3544, located in Woodbury County, Iowa, is a vital water resource managed by the local government with oversight from the Iowa Department of Natural Resources.
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Summary
This subwatershed serves multiple purposes, including fire protection, stock watering, and small fish pond maintenance. Built in 1959, the earth dam stands at 47 feet in height, with a storage capacity of 170 acre-feet and a drainage area of 0.74 square miles.
The dam on Moose Creek is crucial for flood risk reduction and water management in the region, with a surface area of 4.2 acres and a normal storage capacity of 52 acre-feet. Despite being rated as low hazard potential, the dam's condition has not been assessed recently. The risk assessment for Lum Hollow Subwatershed 9-3544 indicates a moderate risk level, emphasizing the need for regular inspections and maintenance to ensure the safety and effectiveness of this water resource for the community.
With its strategic location and essential functions, Lum Hollow Subwatershed 9-3544 plays a key role in the local ecosystem and water supply. As a part of the Omaha District managed by the USDA NRCS, this earth dam stands as a testament to sustainable water resource management practices. Enthusiasts of water resources and climate resilience will find this subwatershed a fascinating case study in balancing multiple uses while ensuring the safety and integrity of essential infrastructure in the face of changing environmental conditions.
Year Completed |
1959 |
Dam Length |
350 |
Dam Height |
47 |
River Or Stream |
MOOSE CREEK |
Primary Dam Type |
Earth |
Surface Area |
4.2 |
Drainage Area |
0.74 |
Nid Storage |
170 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
47 |
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
|
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.
Lum Hollow Subwatershed 9-3544