• View of Half Dome and Washington Column in Yosemite Valley

    Yosemite

    National Park California

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  • Tioga Road is Closed for the Winter

    The Tioga Road (Highway 120 through the park) is closed due to snow; it usually reopens in late May or June. You can check on current road conditions by calling 209/372-0200 (press 1 then 1). More »

Meadow Health

graphic of a pristine meadow landscape
Healthy Meadow: Factors of a pristine meadow include: meadow hydrology, soils and vegetation and interdependent; diverse mosaic of habitat with wet meadow and riparian vegetation; surface flow from snowmelt; high water table; inundation during floods with sediment deposition and attenuated flood flows; subsurface flow of snowmelt; and percolation with groundwater recharge.
Illustrations by Restoration Design Group for American Rivers
 
graphic of a degraded meadow landscape
Unhealthy Meadow: Factors of a degraded meadow include: reduced natural storage of water; lowering of groundwater table; flood flows confined to channel with no inundation during floods; disconnect of channel from meadow floodplain; reduced percolation; xeric (or dry) vegetation; incised stream channel with increased sediment transport; and compacted soils.

Did You Know?

View of Yosemite Valley from the Wawona Tunnel Vista.

Rockfall events have helped shape many of the outstanding features along Yosemite Valley's walls, including Royal Arches, North Dome, and Half Dome. Giant talus slopes that slant away from the Valley walls accumulate debris with each rockfall event.