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Bulletin 118 – Update 2003
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 California’s Groundwater: Bulletin 118
Bulletin 118, which was first published in 1975. This update is the compilation of a four-year effort and is referred to as 'Bulletin 118 Update 2003'. Bulletin 118 Update 2003 includes the written report and supplemental material consisting of individual hydrogeologic descriptions, maps, and GIS compatible data files of each delineated groundwater basin in California. The written report is available in hard copy and is posted on this website. The basin descriptions and maps are available only on the website. The basin descriptions and maps will be updated as new information becomes available. Basin descriptions are not published in the hard copy version of Bulletin 118 Update 2003.

groundwater discharge site

 

Background

Despite California's heavy reliance on groundwater, basic information for many of the groundwater basins is lacking. Particular essential data necessary to provide for both the protection and optimal use of this resource is not available. To this end, the California Legislature mandated in the Budget Act of 1999 that the Department of Water Resources prepare:

"... the statewide update of the inventory of groundwater basins contained in Bulletin 118-80, which includes, but is not limited to, the following: the review and summary of boundaries and hydrographic features, hydrogeologic units, yield data, water budgets, well production characteristics, and water quality and active monitoring data; development of a water budget for each groundwater basin; development of a format and procedures for publication of water budgets on the Internet; development of the model groundwater management ordinance; and development of guidelines for evaluating local groundwater management plans."

 

 
 

 

   

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