Lake Mayfield

General data
- Name: Lake Mayfield
- Water system: Columbia River
- Water type: River
- Progression: Cowlitz River -> Columbia River -> Columbia River Estuary -> Pacific Ocean -> Planet Earth
- Climates: Temperate
- Continents: North America
- Countries: United States of America
Description
Lake Mayfield is a reservoir located near Mossyrock, Washington, in Lewis County. It was created by Mayfield Dam on the Cowlitz River, one of the dams in the Columbia River watershed.