Barclay Dam Reservoir Report
Nearby: Holiday Lake Dam Baker Dam
Last Updated: December 6, 2025
Barclay Dam, located in Poweshiek County, Iowa, was completed in 1966 by the USDA NRCS and serves multiple purposes including fire protection and as a small fish pond.
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Summary
Standing at a height of 25 feet and spanning 421 feet in length, the dam holds a storage capacity of 50 acre-feet with a normal storage level of 21 acre-feet. With a low hazard potential and a moderate risk assessment rating, the dam is under the regulatory jurisdiction of the Iowa DNR and undergoes regular inspections, permitting, and enforcement.
The dam, situated on TR-ROCK CREEK, is owned by a private entity and is designed to control water flow and prevent flooding in the area. Although the spillway type is uncontrolled, the dam has not experienced any significant modifications or incidents. Despite its relatively low hazard potential, the dam's risk assessment remains moderate, prompting the need for ongoing risk management measures and emergency preparedness planning. Overall, Barclay Dam represents a crucial infrastructure for water resource management and climate resilience in the region, safeguarding against potential hazards while also providing valuable benefits to the local community.
Year Completed |
1966 |
Dam Length |
421 |
Dam Height |
25 |
River Or Stream |
TR-ROCK CREEK |
Primary Dam Type |
Earth |
Surface Area |
4.5 |
Drainage Area |
0.3 |
Nid Storage |
50 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Walnut Creek Near Hartwick
|
13cfs |
Richland Creek Near Haven
|
12cfs |
Iowa River Near Belle Plaine
|
966cfs |
Salt Creek Near Elberon
|
42cfs |
Big Bear Creek At Ladora
|
36cfs |
Iowa River At Marengo
|
818cfs |
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.
Barclay Dam