Noxon Rapids Dam Quick Facts
Noxon Rapids Dam Map
Noxon Rapids Dam Information
Noxon Rapids Dam is a gravity earth dam located about 3 miles from Noxon, Mt, Sanders, Montana.
The dam, which is on the Clark Fork River, was primarily built for Hydroelectric purposes, but also serves for Fish and Wildlife Pond and Recreation benefits.
The dam was designed by EBASCO and commissioned in 1960 and is currently owned by Avista Corporation.
Noxon Rapids Dam Structure
The Noxon Rapids Dam is approximately 5,840 feet (1,780 m) long, 135 feet (41 m) high and has a structural volume of cubic yards (0 cubic metres).
Noxon Rapids Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 400,000 acre-ft (493,392 Ml) and maximum capacity of 400,000 acre-ft (493,392 Ml).
The surface area of the reservoir is 7,940 acres (3,213 ha) and the total catchment area is 21,800 square miles (56,462 square kilometres).
Noxon Rapids Dam Spillway
The dam spillway has a maximum discharge capacity of 364000 cubic feet per second (10307 cubic metres per second).
Noxon Rapids Dam Compared to Five Famous American Dams
Noxon Rapids Dam Weather
Current Conditions at Noxon Rapids Dam
Failed to fetch current weather data.7-Day Forecast for Noxon Rapids Dam
Failed to fetch weather forecast data.Noxon Rapids Dam Frequently Asked Questions
Noxon Rapids Dam is in Montana.
Noxon Rapids Dam is in Sanders County.
Noxon Rapids Dam is 135 feet high.
Noxon Rapids Dam is 5,840 feet long.
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Condition Assessment Classification
Satisfactory
No 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
High
Dams 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.
Source: National Inventory of Dams