North Pigeon Cr Watershed Site M Reservoir Report

Last Updated: December 14, 2025

Located in Pottawattamie County, Iowa, the North Pigeon Cr Watershed Site M is a vital water resource managed by the local government for fire protection, stock, and small fish pond purposes.


°F

°F

mph

Wind

%

Humidity

Summary

Constructed in 1996 by the USDA NRCS, this earth dam stands at a height of 17 feet and spans a length of 1160 feet, providing a storage capacity of 64 acre-feet. With a drainage area of 6.66 square miles, this structure plays a crucial role in flood risk reduction along the North Pigeon Creek.

Managed by the Iowa DNR, this site is regulated, permitted, inspected, and enforced to ensure its safety and effectiveness. The dam, with a hazard potential rated as low, has not been assessed for its condition but is considered to have moderate risk. Despite lacking an emergency action plan (EAP) and inundation maps, the North Pigeon Cr Watershed Site M meets regulatory guidelines while operating under the Omaha District of the US Army Corps of Engineers.

For water resource and climate enthusiasts, the North Pigeon Cr Watershed Site M presents an intriguing case study of local government involvement in managing water resources for multiple purposes. With its strategic location in Crescent, Iowa, and its role in flood risk reduction, this site exemplifies the importance of sustainable water management practices in enhancing community resilience to natural disasters.

Year Completed

1996

Dam Length

1160

Dam Height

17

River Or Stream

NORTH PIGEON CREEK

Primary Dam Type

Earth

Surface Area

3.9

Drainage Area

6.66

Nid Storage

64

Hazard Potential

Low

Foundations

Soil

Nid Height

17
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.