washington Reservoir Report
September 29 2023
The history of reservoirs and dams in the USA is closely tied to the country's development and growth. Major river systems like the Colorado, Columbia, and Missouri have been extensively dammed to provide water for irrigation, hydropower, flood control, and recreation. Many of these dams were constructed in the mid-20th century, during a period of rapid infrastructure development, and have since played an essential role in the country's economy and society.
The US has a vast network of dams and reservoirs, with over 90,000 dams across the country, including 2,500 major dams. Many of these dams are located on major river systems, such as the Colorado River, where they have significant hydrological impacts on the river's flow and ecosystem. Dams can also have important climatic impacts, influencing the amount of water available for irrigation, and potentially affecting regional climates. For example, the construction of large reservoirs in arid regions like the Colorado River basin can lead to increased evaporation rates, reducing the amount of water available for other uses. Additionally, climate change may exacerbate existing hydrological and climatic concerns, potentially leading to more frequent and severe droughts and floods in certain regions.
| Location | Observation | 24hr Change (%) | Percent Normal (%) | Elevation (ft) |
|---|---|---|---|---|
|
Wynoochee Lake Near Grisdale
Washington • ID 12035380 |
767 ft | -0.07 | 100 | 708.35 |
|
Mud Mountain Lake Near Buckley
Washington • ID 12098000 |
908 ft | -0.76 | 100 | 1253.15 |
|
Lake Tapps Near Sumner
Washington • ID 12101000 |
541 ft | 0 | 100 | 531.36 |
|
Howard A Hanson Reservoir Near Palmer
Washington • ID 12105800 |
1,133 ft | -0.01 | 100 | 1206 |
|
Chester Morse Lake At Cedar Falls
Washington • ID 12115900 |
1,547 ft | 0 | 100 | 1565.28 |
|
Cedar Lake (Masonry Pool) Near Cedar Falls
Washington • ID 12116060 |
1,517 ft | 0.09 | 100 | 1548.55 |
|
Sammamish Lake Near Redmond
Washington • ID 12122000 |
26 ft | 0.23 | 100 | 33 |
|
South Fork Tolt Reservoir Near Carnation
Washington • ID 12147900 |
1,724 ft | 0.04 | 100 | 1771 |
|
Diablo Reservoir Near Newhalem
Washington • ID 12176500 |
1,201 ft | -0.03 | 100 | 1046.7 |
|
Baker Lake At Upper Baker Dam Near Concrete
Washington • ID 12191600 |
721 ft | 0.02 | 100 | 730 |
|
Lake Shannon At Concrete
Washington • ID 12193000 |
410 ft | 0.06 | 100 | 443 |
|
Franklin Roosevelt Lake At Grand Coulee Dam
Washington • ID 12436000 |
1,284 ft | 0 | 100 | 1175.16 |
|
Osoyoos Lake Near Oroville
Washington • ID 12439000 |
911 ft | 0 | None | 908.56 |
|
Lake Chelan At Purple Point At Stehekin
Washington • ID 12451200 |
1,097 ft | -0.01 | 100 | 1093.1 |
|
Lake Chelan At Chelan
Washington • ID 12452000 |
1,097 ft | -0.01 | 100 | 1100 |
|
Lenore Lk Near Soap Lk
Washington • ID 12469500 |
1,075 ft | 0 | 100 | 1084.47 |
|
Soap Lk Near Soap Lk
Washington • ID 12470000 |
1,070 ft | 0 | 100 | 1078.46 |
|
Moses Lake At Moses Lake
Washington • ID 12471000 |
1,046 ft | 0 | None | 1050 |
|
Lake Scanewa Near Kosmos
Washington • ID 14233490 |
-999,999 ft | None | None | 827.97 |
|
Castle Lake Nr Mount St Helens Nr Spirit Lake
Washington • ID 14240446 |
2,577 ft | 0 | None | 2579.71 |
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