Cross Reservoir Report
Nearby: Bill Christensen Dam Ron Jacobson Dam
Last Updated: January 12, 2026
Cross is a private earth dam located in Sanders, Montana, designed by the USDA NRCS to serve the primary purpose of flood risk reduction along the TR-Camas Creek.
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Summary
Completed in 1963, the dam stands at a height of 10 feet with a length of 370 feet, offering a maximum storage capacity of 77 acre-feet. The dam is regulated and inspected by the DNRC, with a low hazard potential and a moderate risk assessment rating.
Situated in the city of PERMA, Cross plays a crucial role in managing water resources in the area, with a drainage area of 1.56 square miles. The spillway of the dam is uncontrolled with a width of 100 feet, and it is located in Congressional District 00, Montana, represented by Greg Gianforte (R). Despite not being rated for its condition, the dam meets state regulatory requirements for permitting, inspection, and enforcement, ensuring its operational effectiveness in mitigating flood risks in the region.
Enthusiasts of water resource and climate management will appreciate the strategic location and design of the Cross dam, which contributes to the sustainable management of water resources in Montana. With its state-regulated status and adherence to inspection and enforcement protocols, Cross serves as a reliable infrastructure for flood risk reduction along the TR-Camas Creek. Its moderate risk assessment rating highlights the importance of ongoing monitoring and management measures to ensure the safety and effectiveness of this essential water resource structure.
Year Completed |
1963 |
Dam Length |
370 |
Dam Height |
10 |
River Or Stream |
TR-CAMAS CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
10 |
Drainage Area |
1.56 |
Nid Storage |
77 |
Hazard Potential |
Low |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Flathead River At Perma Mt
|
12300cfs |
Clark Fork Near Plains Mt
|
18200cfs |
Flathead River Near Polson Mt
|
12200cfs |
Mill Cr Ab Bassoo Cr Nr Niarada Mt
|
2cfs |
South Crow Creek Near Ronan Mt
|
9cfs |
Clark Fork At St. Regis Mt
|
5510cfs |
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.
Cross