Crane Creek Main Dam Reservoir Report
Nearby: Crane Creek Dike Little Crane Creek
Last Updated: December 15, 2025
Crane Creek Main Dam, also known as Crane Creek Primary Dam, is a privately owned structure located in Weiser, Idaho.
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Summary
Completed in 1912, this earth dam stands at a height of 64 feet and has a hydraulic height of 55 feet. With a storage capacity of 56,800 acre-feet and covering a surface area of 3,000 acres, this dam plays a crucial role in regulating water flow in Crane Creek and the Weiser River.
Managed by the Idaho Department of Water Resources, Crane Creek Main Dam is classified as a high hazard potential structure with fair condition assessment. The dam features an uncontrolled spillway with a width of 130 feet and operates outlet gates in the form of slide gates. The dam holds a moderate risk rating and undergoes inspections every two years, with the last assessment conducted in September 2019.
Water resource and climate enthusiasts will appreciate the historical significance and engineering marvel of Crane Creek Main Dam. Its strategic location and function in storing water for agricultural and recreational purposes, along with its impact on the local ecosystem, make it a vital piece of infrastructure in Washington County, Idaho. Despite its age, the dam continues to be actively regulated and inspected to ensure public safety and water resource management for the region.
Year Completed |
1912 |
Dam Length |
335 |
Dam Height |
64 |
River Or Stream |
CRANE CREEK WEISER RIVER |
Surface Area |
3000 |
Hydraulic Height |
55 |
Drainage Area |
242 |
Nid Storage |
56800 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
64 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Crane Creek At Mouth Nr Weiser Id
|
6cfs |
Weiser River Nr Weiser Id
|
299cfs |
Weiser River Nr Cambridge Id
|
175cfs |
Snake River At Weiser Id
|
10100cfs |
Payette River Nr Payette Id
|
1570cfs |
Nf Payette River Nr Banks Id
|
338cfs |
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.
Crane Creek Main Dam