Little Green Lake Dam, located in Okanogan, Washington, is a state-regulated structure managed by the Washington Dept of Ecology.
Wind
Humidity
Completed in 1959, this earth dam serves as a Fish and Wildlife Pond, with a storage capacity of 268 acre-feet and a surface area of 50 acres. The dam stands at a hydraulic height of 11 feet and a structural height of 9 feet, with a length of 88 feet.
Despite being classified as having a high hazard potential, the dam is currently in fair condition as of the last inspection in August 2019. With a drainage area of 1.9 square miles, the dam plays a crucial role in managing water resources for the Tr-Salmon Creek and surrounding areas. The dam's purpose primarily focuses on enhancing fish and wildlife habitats, highlighting its importance in ecological conservation efforts.
As a key component of the local water management infrastructure, Little Green Lake Dam not only provides vital storage capacity but also supports the ecological balance of the region. With state regulatory oversight ensuring its safety and functionality, the dam continues to play a significant role in water resource management and climate resilience efforts in the Okanogan area.
Year Completed |
1959 |
Dam Length |
88 |
River Or Stream |
Tr-Salmon Creek |
Primary Dam Type |
Earth |
Surface Area |
50 |
Hydraulic Height |
11 |
Drainage Area |
1.9 |
Nid Storage |
268 |
Structural Height |
9 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
11 |
Omak Creek Near Omak
|
8cfs |
Okanogan River At Malott
|
2420cfs |
Okanogan River Near Tonasket
|
8640cfs |
Methow River At Twisp
|
6560cfs |
Twisp River Near Twisp
|
1780cfs |
Methow River At Winthrop
|
4510cfs |
| Location | Reservations | Toilets |
|---|---|---|
Green Lake
|
||
Green Lake - WDFW
|
||
Legion RV Park - Okanogan
|
||
American Legion City Park Campsite
|
||
Okanogan County Fairground
|
||
Carl Precht RV Park
|