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Lakes / Oregon / Jefferson County / Lake Billy Chinook

Lake Billy Chinook, Jefferson County, Oregon

772 acres
Surface Area

Where It Sits, and How Deep It Goes

Locator - Oregon

PortlandBendLake Billy ChinookJefferson Co.

44.55 degrees N, 121.27 degrees W - Jefferson County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.

How Lake Billy Chinook Stacks Up

Lakes Nearby

LakeCountyDistanceSurface Area
Lake Billy ChinookJefferson4.4 mi3,081 acres
Haystack ReservoirJefferson6.8 mi219 acres
Lake SimtustusJefferson7.7 mi553 acres
Pelton Regulating ReservoirJefferson12 mi164 acres
Brewer ReservoirJefferson17 mi57 acres
Little Willow Creek ReservoirJefferson20 mi53 acres

Straight-line distance between lake centers.

Facts and Figures

Waterbody ID147704015
CountyJefferson
Lake TypeReservoir
Coordinates44.5470, -121.2688

Questions About Lake Billy Chinook

How Big Is Lake Billy Chinook?

Lake Billy Chinook covers 772 acres in Jefferson County, Oregon.

What Is the Largest Lake in Jefferson County?

Lake Billy Chinook is the largest lake in Jefferson County, at 3,081 acres.

Largest Lakes in Oregon

#LakeCountySurface AreaMax Depth
1Upper Klamath LakeKlamath62,095 acres-
2Lake UmatillaMorrow50,042 acres-
3Lake AbertLake37,137 acres-
4Summer LakeLake31,602 acres-
5Harney LakeHarney31,290 acres-

All 642 Oregon lakes ranked by surface area

Sources: USGS NHD (The National Map NHD MapServer layer 12) named waterbodies FTYPE 390/436; counties via Census point-in-polygon lake data (ID 147704015). Verified October 30, 2026.