A general schematic representation of an estuary, as defined by Pritchard ... coastal plain (drowned river valley), bar-built, delta, blind, ria, tectonic, and fjord. These categories were ...

For a small fish only found in the San Francisco Estuary, the delta smelt has caused a lot of controversy over the years.

The U.S. Bureau of Reclamation has awarded the Round Valley Indian Tribes and the Sonoma County Water Agency USD 15 million ...