Case Dam Reservoir Report

Last Updated: December 14, 2025

Case Dam, located in Braddyville, Iowa, is a privately owned earth dam that serves multiple purposes including fire protection, stock, and small fish pond.


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Summary

Built in 2000 by NRCS, this dam stands at a height of 25 feet and stretches 535 feet in length, with a storage capacity of 54 acre-feet. The dam is regulated by the Iowa DNR and is subject to state permitting, inspection, and enforcement.

Situated on TR- Long Branch, Case Dam has a low hazard potential and a moderate risk assessment rating of 3. While the dam's condition assessment is currently not rated, it meets state jurisdiction requirements and is in compliance with state regulatory agencies. Despite lacking an emergency action plan and inundation maps, the dam is considered to be in satisfactory condition with no major concerns reported.

Water resource and climate enthusiasts will appreciate the strategic location of Case Dam and its contribution to fire protection, livestock watering, and recreational fishing activities in the area. The dam's design and construction by NRCS, along with its state-regulated status and low hazard potential, make it a key infrastructure for water management and conservation efforts in Adams County, Iowa.

Year Completed

2000

Dam Length

535

Dam Height

25

River Or Stream

TR- LONG BRANCH

Primary Dam Type

Earth

Surface Area

4.2

Drainage Area

0.19

Nid Storage

54

Hazard Potential

Low

Foundations

Soil

Nid Height

25
       
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.