The Dalles Lock and Dam Quick Facts
The Dalles Lock and Dam Map
The Dalles Lock and Dam Information
The Dalles Lock and Dam is a gravity dam located in The Dalles, Klickitat, Oregon.
The dam, which is on the Columbia River, was primarily built for Navigation purposes, but also serves for Irrigation, Recreation and Hydroelectric benefits.
The dam was designed by CENWP and commissioned in 1957 and is currently owned by USACE – Portland District.
The Dalles Lock and Dam Structure
The The Dalles Lock and Dam is approximately 8,735 feet (2,662 m) long, 116 feet (35 m) high and has a structural volume of 3,061,000 cubic yards (2,340,303 cubic metres).
The Dalles Lock and Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 277,000 acre-ft (341,674 Ml) and maximum capacity of 330,000 acre-ft (407,048 Ml).
The surface area of the reservoir is 11,200 acres (4,532 ha) and the total catchment area is 237,000 square miles (613,828 square kilometres).
The Dalles Lock and Dam Spillway
The dam has a 1441 feet (439 m) wide controlled spillway with a maximum discharge capacity of 2290000 cubic feet per second (64846 cubic metres per second).
The Dalles Lock and Dam Compared to Five Famous American Dams
The Dalles Lock and Dam Weather
Current Conditions at The Dalles Lock and Dam
| Parameter | Value |
|---|---|
| Current Time | 22:20 |
| Sunrise | 07:27 |
| Sunset | 16:21 |
| Temperature (°F) | 35 |
| Feels Like (°F) | 27 |
| Cloud Coverage (%) | 100 |
| Pressure (inHg) | 1033 |
| Humidity (%) | 87 |
| Wind Speed (mph) | 9 |
| Rain (mm) | 0 |
7-Day Forecast for The Dalles Lock and 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 | 30 | 41 | 35 | 1031 | 53 | 5 | 6 | E | 0 | - |  |
| Wed | 29 | 42 | 35 | 1031 | 52 | 4 | 4 | E | 0 | - | |
| Thu | 31 | 44 | 41 | 1030 | 51 | 2 | 2 | E | 0 | - |  |
| Fri | 34 | 45 | 43 | 1030 | 60 | 3 | 3 | E | 0 | - | |
| Sat | 37 | 47 | 37 | 1019 | 93 | 5 | 5 | WNW | 100 | 6 |  |
| Sun | 40 | 46 | 38 | 1019 | 84 | 22 | 43 | WNW | 100 | 5 | |
| Mon | 38 | 49 | 43 | 1029 | 73 | 8 | 17 | WSW | 0 | - | |
| Tue | 37 | 48 | 44 | 1031 | 75 | 6 | 9 | W | 0 | - | |
The Dalles Lock and Dam Frequently Asked Questions
The Dalles Lock and Dam is in Oregon.
The Dalles Lock and Dam is in Klickitat County.
The Dalles Lock and Dam is 116 feet high.
The Dalles Lock and Dam is 8,735 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