• Rainbow over Half Dome

    Yosemite

    National Park California

Water Quality and Sewer Management

Drinking Water Quality Consumer Confidence Reports

Sewer System Management Plans

Did You Know?

Upper Yosemite Fall with spring runoff

Yosemite Falls is fed mostly by snowmelt. Peak flow usually happens in late May, but by August, Yosemite Falls is often dry. It begins flowing again a few months later, after winter snows arrive.