Click to access individual lake summary pages with available information. Chart symbols before lake names indicate that PNWWQX data is available for that lake.
A B C D E F G H I J K L M N O P R S T U V W

O

Obenchain Reservoir
    (
  • Klamath County
    • )
Ochoco Reservoir
    (
  • Crook County
    • )
Odell Lake
    (
  • Klamath County
    • )
Officers Reservoir
    (
  • Grant County
    • )
Olalla Reservoir
    (
  • Lincoln County
    • )
Olallie Lake
    (
  • Jefferson County
    • )
Olive Lake
    (
  • Grant County
    • )