Quick Facts About Long Lake Dam
Long Lake Dam Map
Long Lake Dam Information
Long Lake Dam is a gravity concrete dam located about 5 miles from Long Lake Op Village, Stevens, Washington.
The dam, which is on the Spokane River, was primarily built for Hydroelectric purposes, but also serves for Fish and Wildlife Pond and Recreation benefits.
The dam was designed by Washington Water Power and commissioned in 1915 and is currently owned by Avista Corporation.
Long Lake Dam Structure
The Long Lake Dam is approximately 593 feet (181 m) long, 213 feet (65 m) high and has a structural volume of cubic yards (0 cubic metres).
Long Lake Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 105,080 acre-ft (129,614 Ml) and maximum capacity of acre-ft (0 Ml).
The surface area of the reservoir is 5,060 acres (2,048 ha) and the total catchment area is 5,844 square miles (15,136 square kilometres).
Long Lake Dam Spillway
The dam has a 353 feet (108 m) wide controlled spillway with a maximum discharge capacity of 269200 cubic feet per second (7623 cubic metres per second).
Long Lake Dam Compared to Four Famous American Dams
| Long Lake Dam Stevens, Washington |
Hoover Dam Clark County, Nevada |
Grand Coulee Dam Okanogan County, Washington |
Theodore Roosevelt Dam Maricopa County, Arizona |
Glen Canyon Dam Coconino County, Arizona |
|
|---|---|---|---|---|---|
| Height (ft) | 213 | 730 | 550 | 357 | 216 |
| Length (Ft) | 593 | 1,244 | 5,673 | 6,920 | 1,565 |
| Storage Volume (acre-ft) | 30,237,000 | 9,562,000 | 3,540,000 | 29,875,000 | |
| Drainage Area (sq miles) | 5,844 | 167,800 | 74,100 | 3,611 | 108,355 |
Long Lake Dam Weather
Current Conditions at Long Lake Dam
Failed to fetch current weather data.7-Day Forecast for Long Lake Dam
Failed to fetch weather forecast data.Long Lake Dam Frequently Asked Questions
Long Lake Dam is in Washington.
Long Lake Dam is in Stevens County.
Long Lake Dam is 213 feet high.
Long Lake Dam is 593 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