Follow South Wilderness/Chalone Creek channel bed from parking area at end of road under live oaks. continue south approx. 350 m along large stand of mixed Salix, Populus and Platanus. Slope and aspect undeterminable for a flat wash. Plot is mixed willow, sycamore and cottonwood, with willows dominant in shrub layer. Centered around small opening; plot is part of a floodplain... no water flowing now. Trailing from feral pigs.