Crawford Creek Subwatershed Site 13-1 Reservoir Report
Last Updated: December 14, 2025
Crawford Creek Subwatershed Site 13-1 is a locally-owned earth dam located in Danbury, Iowa, designed by the USDA NRCS in 1974 for purposes including fire protection, stock, small fish pond, and flood risk reduction.
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Summary
The dam stands at a height of 33 feet with a length of 530 feet, providing a storage capacity of 70 acre-feet on its 4.8-acre surface area. With a drainage area of 0.27 square miles, the dam serves as a vital structure for water resource management in the area, regulating flow and providing flood protection along the TR-Maple River.
Managed by the Iowa DNR, Crawford Creek Subwatershed Site 13-1 has a low hazard potential and a moderate risk assessment score of 3, indicating the need for ongoing monitoring and maintenance. While the dam's condition assessment is currently not rated, its emergency action plan status, inspection frequency, and risk management measures are yet to be determined. With its strategic location and primary purpose in mind, this earth dam plays a crucial role in enhancing water security, ecological balance, and climate resilience in the region, making it an important site for enthusiasts and stakeholders interested in sustainable water resource management and climate adaptation.
Year Completed |
1974 |
Dam Length |
530 |
Dam Height |
33 |
River Or Stream |
TR-MAPLE RIVER |
Primary Dam Type |
Earth |
Surface Area |
4.8 |
Drainage Area |
0.27 |
Nid Storage |
70 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
33 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Maple River At Mapleton
|
323cfs |
Little Sioux River At Correctionville
|
327cfs |
West Fork Ditch At Hornick
|
80cfs |
Little Sioux River Near Turin
|
1040cfs |
North Raccoon River Near Sac City
|
312cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
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.
Crawford Creek Subwatershed Site 13-1