Dane Ridge Watershed Site D-11 Reservoir Report
Last Updated: December 14, 2025
Located in the heart of Crawford County, Iowa, Dane Ridge Watershed Site D-11 is a vital water resource managed by the local government with regulatory oversight from the Iowa Department of Natural Resources.
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Summary
Designed by the USDA NRCS in 1978, this earth dam serves multiple purposes including fire protection, stock, small fish pond, flood risk reduction, and recreation on its 12.8-acre surface area.
With a dam height of 35 feet and a storage capacity of 225 acre-feet, this structure on TR-Welsh Creek Gully D-13 plays a crucial role in managing water flow and mitigating potential hazards. The dam's spillway, classified as uncontrolled, serves as the primary outlet for excess water during heavy rainfall events. Despite its low hazard potential, the dam's condition remains unrated, emphasizing the need for regular inspections and maintenance to ensure its continued safety and functionality.
Enthusiasts of water resources and climate advocacy will appreciate Dane Ridge Watershed Site D-11 for its strategic placement, multi-purpose functionality, and contribution to water conservation efforts in the region. As a key component of the local water infrastructure, this earth dam exemplifies the importance of sustainable water management practices and the collaboration between government agencies and conservation organizations to safeguard our natural resources for future generations.
Year Completed |
1978 |
Dam Length |
630 |
Dam Height |
35 |
River Or Stream |
TR-WELSH CREEK GULLY D-13 |
Primary Dam Type |
Earth |
Surface Area |
12.8 |
Drainage Area |
0.89 |
Nid Storage |
225 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Maple River At Mapleton
|
323cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Soldier River At Pisgah
|
112cfs |
Boyer River At Logan
|
417cfs |
West Fork Ditch At Hornick
|
80cfs |
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.
Dane Ridge Watershed Site D-11