California Water Science Center
Surface Water: Cycle II Activities (2004 - 2014)
Cycle 2 of the U.S. Geological Survey NAWQA Program, which began in 2001, builds on the previous decade's investigations with some major changes in the number of surface water sites monitored for status of and trends in water quality. Two surface water sites in the Sacramento River Basin were chosen for ongoing monitoring as part of the Status and Trends portion of the NAWQA Program. The Status and Trends Program is intended to provide continuing information on water quality parameters of interest at a select number of sites and at variable sampling frequency. The two sites chosen for the Sacramento River Basin are the Sacramento River at Freeport and Arcade Creek near Del Paso Heights (see map for locations). During the time period of October 1, 2006 through September 30, 2007, only the Sacramento River site will be monitored. That site will be sampled a total of 17 times during this period and will include analyses of nutrients, pesticides, suspended sediment, pH, alkalinity, dissolved oxygen, specific conductance, chloride, and sulfate.