Thompson Falls – Main Channel Dam Quick Facts
Thompson Falls – Main Channel Dam Map
Thompson Falls – Main Channel Dam Information
Thompson Falls – Main Channel Dam is a gravity dam located in None, Sanders, Montana.
The dam, which is on the Clark Fork River, Pend Oreille, was primarily built for Hydroelectric purposes, but also serves for benefits.
The dam was designed by and commissioned in 1915 and is currently owned by NorthWestern Energy.
Thompson Falls – Main Channel Dam Structure
The Thompson Falls – Main Channel Dam is approximately 1,016 feet (310 m) long, 50 feet (15 m) high and has a structural volume of cubic yards (0 cubic metres).
Thompson Falls – Main Channel Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 14,970 acre-ft (18,465 Ml) and maximum capacity of 24,450 acre-ft (30,159 Ml).
The surface area of the reservoir is 1,580 acres (639 ha) and the total catchment area is 21,113 square miles (54,682 square kilometres).
Thompson Falls – Main Channel Dam Spillway
The dam spillway has a maximum discharge capacity of 175000 cubic feet per second (4955 cubic metres per second).
Thompson Falls – Main Channel Dam Compared to Five Famous American Dams
Thompson Falls – Main Channel Dam Weather
Current Conditions at Thompson Falls – Main Channel Dam
| Parameter | Value |
|---|---|
| Current Time | 22:01 |
| Sunrise | 08:00 |
| Sunset | 18:52 |
| Temperature (°F) | 55 |
| Feels Like (°F) | 53 |
| Cloud Coverage (%) | 100 |
| Pressure (inHg) | 1012 |
| Humidity (%) | 65 |
| Wind Speed (mph) | 3 |
| Rain (mm) | 0 |
7-Day Forecast for Thompson Falls – Main Channel Dam
| Day | Min Temp (°F) | Max Temp (°F) | Feels Like (°F) | Pressure (inHg) | Humidity (%) | Wind Speed (mph) | Wind Gust (mph) | Wind Dir | Precip Prob (%) | Precip Volume (mm) | Weather |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Today | 50 | 75 | 71 | 1015 | 35 | 3 | 8 | W | 0 | - |  |
| Wed | 47 | 55 | 51 | 1011 | 94 | 7 | 25 | SW | 100 | 9 |  |
| Thu | 35 | 47 | 43 | 1010 | 65 | 6 | 22 | SW | 100 | 2 | |
| Fri | 32 | 54 | 50 | 1024 | 41 | 6 | 6 | WNW | 0 | - |  |
| Sat | 34 | 54 | 49 | 1025 | 44 | 3 | 5 | SSW | 0 | - | |
| Sun | 47 | 51 | 48 | 1015 | 92 | 4 | 5 | S | 100 | 5 | |
| Mon | 38 | 47 | 45 | 1020 | 83 | 4 | 8 | SW | 100 | 2 | |
| Tue | 36 | 55 | 48 | 1019 | 58 | 8 | 16 | W | 0 | - | |
Thompson Falls – Main Channel Dam Frequently Asked Questions
Thompson Falls – Main Channel Dam is in Montana.
Thompson Falls – Main Channel Dam is in Sanders County.
Thompson Falls – Main Channel Dam is 50 feet high.
Thompson Falls – Main Channel Dam is 1,016 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