Cherry Creek #9 Reservoir Report
Nearby: Cherry Creek #10 Cherry Creek #4
Last Updated: December 7, 2025
Cherry Creek #9 is a privately owned structure located in Forsyth, Montana, along the TR-Big Porcupine Creek.
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Summary
Designed by the USDA NRCS and completed in 1968, this earth dam stands at a height of 20 feet and spans 2000 feet in length. With a maximum storage capacity of 1470 acre-feet and a normal storage level of 1023 acre-feet, Cherry Creek #9 serves a primary purpose of "Other" and is regulated by the DNRC in Montana.
Despite its low hazard potential and moderate risk assessment, Cherry Creek #9 has not been rated for its current condition. The dam features an uncontrolled spillway with a width of 100 feet and has a maximum discharge capacity of 700 cubic feet per second. While the structure has not been inspected or assessed recently, it is located in a congressional district represented by Greg Gianforte. Water resource and climate enthusiasts can appreciate the importance of monitoring and maintaining structures like Cherry Creek #9 to ensure the safety and sustainability of water resources in the region.
Year Completed |
1968 |
Dam Length |
2000 |
Dam Height |
20 |
River Or Stream |
TR-BIG PORCUPINE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Drainage Area |
1.09 |
Nid Storage |
1470 |
Hazard Potential |
Low |
Nid Height |
20 |
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.
Cherry Creek #9