Glen Ellen Subwatershed Site 2-2 Reservoir Report
Last Updated: December 13, 2025
Located in Woodbury, Iowa, Glen Ellen Subwatershed Site 2-2 is a vital water resource managed by the local government and designed by USDA NRCS.
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Summary
This dam, completed in 1963, serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. With a height of 25 feet and a length of 290 feet, it provides a storage capacity of 70 acre-feet and covers a surface area of 4.2 acres.
The dam's spillway type is uncontrolled with a width of 3 feet, and it has a low hazard potential and satisfactory condition assessment. The last inspection in July 2019 revealed no major issues, with a moderate risk assessment rating. Located along the TR-Farmers Ditch, this structure plays a crucial role in managing water flow and preventing potential flooding in the area. With state regulation and enforcement in place, Glen Ellen Subwatershed Site 2-2 stands as a reliable asset in safeguarding the local environment and community against water-related risks.
Overall, Glen Ellen Subwatershed Site 2-2 is a well-maintained and strategically designed water resource in Iowa, offering essential services for fire protection, agriculture, and flood mitigation. As climate change continues to impact water resources, structures like this play a crucial role in managing and conserving water for sustainable use. With state oversight and regular inspections, this dam remains a key component in ensuring water security and resilience in the region.
Year Completed |
1963 |
Dam Length |
290 |
Dam Height |
25 |
River Or Stream |
TR-FARMERS DITCH |
Primary Dam Type |
Earth |
Surface Area |
4.2 |
Drainage Area |
0.55 |
Nid Storage |
70 |
Hazard Potential |
Low |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Missouri River At Sioux City
|
15100cfs |
Floyd River At James
|
187cfs |
Omaha Cr At Homer
|
45cfs |
West Fork Ditch At Hornick
|
80cfs |
Perry Creek Near Milnerville
|
25cfs |
South Omaha Creek At Walthill
|
11cfs |
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.
Glen Ellen Subwatershed Site 2-2
Dakota City