Summary
This earth dam serves the primary purpose of irrigation and has a storage capacity of 257 acre-feet. Despite its age, Grasshopper Dam has a low hazard potential and has not been rated for its condition.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Grasshopper Dam is regulated, permitted, inspected, and enforced by state agencies to ensure its safety and compliance. It is situated in Congressional District 00, Montana, under the representation of Greg Gianforte (R). While the dam has not been modified in recent years and lacks detailed assessments on risk and emergency preparedness, it meets guidelines for operation.
For water resource and climate enthusiasts, Grasshopper Dam represents a historic irrigation infrastructure in Montana that continues to support agricultural activities in the region. Its location along Grasshopper Creek and the availability of water storage make it a vital asset for local farmers. As discussions on water management and climate resilience continue to evolve, the maintenance and potential upgrades of dams like Grasshopper will be essential to ensure sustainable water use and security for the future.
Year Completed |
1930 |
Dam Length |
468 |
Dam Height |
31.2 |
River Or Stream |
GRASSHOPPER CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
31.2 |
Nid Storage |
257 |
Hazard Potential |
Low |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Grasshopper