White Wolf Basin Boundary Modification Request to DWR:

State Water Project - Water Quality Data
The District obtains virtually all of its water supply from the California Aqueduct of the State Water Project (SWP). Use the links below to obtain SWP water quality data.  Note that water quality can vary significantly from month to month and year to year.  For example, salt content (EC) is lower in spring than in fall, and lower in wet water years than dry water years.  The Engineering Department can provide assistance upon request. 

The closest SWP sampling points to the District are:

“Check 29” is upstream of the District near Taft Highway;  It is downstream of banking project pumping.

“Check 41” is downstream of the District near the discharge of Edmonston Pumping Plant south of the Tehachapi Mountains.

For recent daily and monthly water quality data for EC, pH, turbidity, temperature

- Link to

For Nitrate and Nitrite in the California Aqueduct at Check 29 (Station KA024454, Highway 119)

Link to  Nitrate and Nitrite in CA Aqueduct at Check 29 (Station KA024454, Highway 119)

For Aqueduct Water Bacteriological Analysis:

District Headquarters Building

Climate Data

Historical Rainfall Data 1971-2013

Historical Rainfall Data 2014-2017

1985  1986  1987  1988  1989  1990  1991  1992  1993  1994  1995  1996  1997

1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010

2011  2012  2013  2014   Current Year

Historical Evaporation Data 1971-2013

Historical Evaporation Data 2014-2017

Citizens Weather Observer Program (CWOP) weather station at the District Headquarters

Link to Real-Time Weather:


District Enterprise System Catalog (SB 272)*

*Note: Some of the data included in the systems listed in our Enterprise System Catalog may be exempt from disclosure under the Public Records Act."

North Sierra Precipitation: 8-Station Index

California Snow Water Content

Bacteria Analysis


Sites_Grower Workshop_ Part 1 Packet