Coverage is from Napa to Monterey.
Home Page Landsat 7 is the latest in a series of earth remote sensing satellites. Historically, Delta outflow has been estimated using a mass-balance calculation that uses measured Delta inflows and exports, and imprecise estimates of consumptive use for the approximately 1,800 small agricultural diversions within the Delta. Although the mass-balance method has worked reasonably well over the years, it has several shortcomings. The USGS can now provide indirect measurements of Delta outflow by combining flow measurements from 4 of the 10 continuous flow monitoring stations currently operated by the USGS in the Delta. During the 1960s and 1970s, data collected in Suisun Bay were analyzed to develop a conceptual model of how water, salt, and sediment move within and through the Bay.