Summary
Built in 1939, Petri stands at a height of 8 feet and has a dam length of 300 feet, providing a storage capacity of 141 acre-feet. While the dam is categorized as having a low hazard potential, its condition assessment is currently marked as "Not Rated," suggesting a need for further evaluation to ensure its structural integrity.
Operated under the jurisdiction of the Montana Department of Natural Resources and Conservation (DNRC), Petri serves as a vital water resource for agricultural irrigation in the region. The dam's primary purpose is irrigation, and it is regulated, permitted, inspected, and enforced by the state, highlighting the commitment to maintaining its functionality and safety. With its strategic location in Blaine County, Petri plays a crucial role in water management and agricultural sustainability in the area.
Despite its age, Petri continues to be a reliable water infrastructure asset, meeting the irrigation needs of the local community. As a key component of the water resource management system in Montana, Petri serves as a testament to the importance of maintaining and regulating dams for sustainable water usage and climate resilience. With ongoing monitoring and potential upgrades, Petri remains an integral part of the region's water supply infrastructure, ensuring the continued prosperity of agricultural activities in the area.
Year Completed |
1939 |
Dam Length |
300 |
Dam Height |
8 |
River Or Stream |
WOODY ISLAND COULEE |
Primary Dam Type |
Earth |
Nid Storage |
141 |
Hazard Potential |
Low |
Nid Height |
8 |
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.
Petri