Projected Geomorphic Response to Future Climate Variability and Change in
Lowland Rivers, San Francisco Bay-Delta Watershed, CA
, DETTINGER, M.D.
, HUGHES, M.
, MALAMUD-ROAM, F.
(1) Geology Department, Univ of California, Davis, CA; (2) USGS, Scripps Inst.
Oceanography, La Jolla, CA; (3) Laboratory for Tree Ring Research, Univ of Arizona,
Tucson, AZ; (4) Dept Earth and Planetary Sciences, Univ of California, Berkeley, CA
Climate variability and change alter fluvial processes in lowland floodplain rivers in
California’s San Francisco Bay-Delta Watershed. Prior to anthropogenic modifications,
geomorphic processes in the lowland portion of the Sacramento and San Joaquin River
system were dominated by episodic avulsion, channel migration, erosion, and sedimentation
that occurred during floods of a wide range of magnitudes. These dynamic processes
created habitat heterogeneity that supported riparian system biodiversity. Several lines of