Connect to the California Data Exchange Center (CDEC) Web Service < http://cdec.water.ca.gov/>. 'CDEC' provides a centralized database to store, process, and exchange real-time hydrologic information gathered by various cooperators throughout California. The 'CDEC' Web Service < http://cdec.water.ca.gov/dynamicapp/wsSensorData> provides a data download service for accessing historical records.