Dane Ridge Watershed Site D-9 Reservoir Report
Last Updated: December 14, 2025
Dane Ridge Watershed Site D-9 is a crucial water resource in Crawford, Iowa, owned by the local government and regulated by the Iowa DNR.
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Summary
Built in 1978 by the USDA NRCS, this earth dam serves multiple purposes including fire protection, stock, small fish pond management, and flood risk reduction. With a height of 35 feet and a storage capacity of 200 acre-feet, this dam covers a surface area of 9.1 acres and drains an area of 0.84 square miles along the TR-Welsh Creek.
Despite being classified as low hazard potential, Dane Ridge Watershed Site D-9 poses a moderate risk due to its condition assessment being labeled as "Not Rated." Its emergency action plan (EAP) status and risk management measures remain unclear, highlighting a need for further evaluation and potential improvements to ensure the safety and efficiency of this vital water management infrastructure. As a part of the Rock Island District, this site plays a significant role in water resource management and climate resilience efforts in the region.
Water resource and climate enthusiasts should keep a close eye on Dane Ridge Watershed Site D-9 as its risk assessment indicates moderate risk, emphasizing the importance of proactive monitoring and maintenance. With a focus on flood risk reduction and multiple agricultural and environmental benefits, this site serves as a key component of the local water infrastructure. Collaboration between stakeholders, including the local government, Iowa DNR, and USDA NRCS, will be essential in ensuring the continued effectiveness and safety of this critical water resource in Crawford, Iowa.
Year Completed |
1978 |
Dam Length |
460 |
Dam Height |
35 |
River Or Stream |
TR-WELSH CREEK |
Primary Dam Type |
Earth |
Surface Area |
9.1 |
Drainage Area |
0.84 |
Nid Storage |
200 |
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 |
Soldier River At Pisgah
|
112cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
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-9