Water Supply Challenges

California relies on an elaborate network of water storage and delivery systems to supply cities, farms, businesses and the environment with adequate water year-round. The systems are necessary because California’s Mediterranean climate means we receive little or no rain for months at a time. The ability to store and move water has made it possible for California to grow and prosper.

Precipitation varies from place to place, season to season, and year to year. Most of the state’s rain and snowfall occurs in the northern part of the state, while most of the demand for water is along the coast and in the valleys to the south of Sacramento. California receives most of its rain and snowfall between October and April, though the highest demand for water is in the hot, dry summer months.

California’s water system was developed to address that variability. Two important projects in that system are the State Water Project (SWP) and the federal Central Valley Project (CVP). The SWP and the CVP bring water from Northern California through the Sacramento-San Joaquin River Delta for delivery to users in the San Joaquin Valley, parts of the San Francisco Bay Area and Southern California.

While the systems operate effectively in some years, California is prone to drought, and the next one is always around the corner. See what public water agencies in California are doing in 2013 to stretch their water supplies in response to this year's historically dry conditions.

Latest News about Water Supply Challenges

Gov. Jerry Brown today signed an emergency legislative package that speeds up the disbursement of more than $1 billion in funding for... read»
California’s continuing dry conditions have forced the U.S. Bureau of Reclamation to adhere to its initial zero 2015 water supply... read»
The vast majority of Californians -- some 66% -- say the water supply in their region is a big problem and the people in their regions are... read»
The state Legislature is expected to approve emergency drought legislation Thursday aimed at expediting $1 billion in funding for drought... read»
As California continues to draw international attention during its fourth year of devastating drought, top-level water officials from state... read»

Latest Posts about Water Supply Challenges

ACWA released a report in June 2014 detailing specific impacts of the drought around the state and underscoring the need for a variety of... read more»
Save Our Water, the state’s largest water conservation program, today urged Californians to take note of state officials’... read more»
Below are materials from the Integrated Watershed Management Initiative Kickoff meeting Sept. 25. read more»
This program will address the fundamentals to water supply reliability in urban water management plans and water supply assessments... read more»