Extension of transient-flow model of the Sacramento River at Sacramento, California

The multiple-reach method-of-characteristics flow-simulaltion model that was successfully applied in 1976 to a 10.8-mile tide-affected reach of the Sacramento River, in California, from Sacramento to Freeport has been extended 10.5 miles farther downstream of Hood. The model reach was extended to improve the quality of the model 's output during low-flow conditons for the streamflow station located at the upstream end of the reach, and to provide flow data at additonal sites farther downstream toward the San Francisco Bay system. The extension of the reach, however, has not improved the quality of the model 's low-flow output but it has provided flow data for sites farther downstream on the Sacramento River. (USGS)