Summary
Built in 1947, this Earth dam stands at a height of 37 feet and spans 350 feet in length, providing critical storage for fire protection, stock, and small fish pond purposes. With a maximum storage capacity of 307 acre-feet and a normal storage level of 218 acre-feet, the reservoir serves as a vital resource for the surrounding community.
Situated along TR-Big Dry Creek, Jarden Reservoir is regulated by the Montana Department of Natural Resources and Conservation (DNRC) with state jurisdiction and permitting in place. The dam boasts a low hazard potential and a moderate risk assessment rating. Despite not being condition rated, the reservoir's structural integrity is ensured through regular state inspections and enforcement measures. The spillway, with a width of 100 feet, provides an uncontrolled release for excess water, while the drainage area is estimated at 2.5 square miles.
Managed by the Natural Resources Conservation Service and with no associated federal agencies, Jarden Reservoir remains a key component of the water infrastructure in the region. With its strategic location in Jordan, Montana, the reservoir plays a crucial role in water management, agricultural activities, and ecological conservation efforts. As a valuable asset for fire protection and livestock needs, Jarden Reservoir stands as a testament to sustainable water resource management in the face of changing climate conditions.
Year Completed |
1947 |
Dam Length |
350 |
Dam Height |
37 |
River Or Stream |
TR-BIG DRY CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
37 |
Drainage Area |
2.5 |
Nid Storage |
307 |
Hazard Potential |
Low |
Nid Height |
37 |
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.
Jarden Reservoir