Long Lake
Dam in Stevens County, Washington · Spokane River · forms Long Lake Dam
Height
225 ft
69 m (NID height)
Length
593 ft
181 m
Completed
1915
Long Lake Dam today
1,535.49 ft
7 days ▼ 0.25 ft
Normal storage
105,080 acre-ft
Normal for the date
Reservoir level measured Oct 23, 2026, 12:00 AM PDT. Full level page →
Facts
- Purposes
- Hydroelectric; Fish and Wildlife Pond; Recreation
- Dam type
- Gravity
- Structural height
- 225 ft
- Owner
- Private
- Maximum storage
- 105,080 acre-ft
- Surface area
- 5,060 acres
- Hydraulic height
- 211 ft
- Drainage area
- 5,844 sq mi
- Spillway
- Controlled, 353 ft wide
- Army Corps district
- Seattle District
- NID ID
- WA00021
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Aug 26, 2026. Search NID ID WA00021 at nid.sec.usace.army.mil. Project website.
Other dams at Long Lake Dam
- Long Lake Crescent