Water Availability Information
- Why Water Availability Analysis?
- How to Prepare a Water Availability Analysis
- Hydrologic Information Online
- Water Availability Peer Review
- Still Have Questions?
A Water Availability Analysis is required by the California Water Code. Pertinent provisions of the Water Code are summarized below:
- Every water right application submitted to the SWRCB must
include "sufficient information to demonstrate
a reasonable likelihood that unappropriated water
is available for appropriation." (Water Code
- "...In determining the amount of water availability for
appropriation, the SWRCB shall take into account,
whenever it is in the public interest, the amounts
of water needed to remain in the source for protection
of beneficial uses..." Instream beneficial
uses include, but are not limited to, recreation
and the preservation of fish and wildlife habitat.
(Water Code section 1243)
- Before the SWRCB can grant a water right permit, it must find that there is "unappropriated water available to supply the applicant." (Water Code section 1375(d))
- Before preparing a WAA, consult with your project’s assigned Division of Water Rights staff person. If you need assistance determining who to contact: Water Rights Permitting and Licensing Unit Contacts by Geographic Area.
- Presentation: Methods to Estimate Streamflow and Water Availability
- USGS Study (2001-2003)
As a follow up to the June 2001 MBK study, the U.S. Geological Survey is evaluating SWRCB's Flow Estimation methods in the North Coast Region. Study results will be published in an Open File Report scheduled for completion in July 2003.
- Streamflow Workshop (May 2002)
Report (July 2001)
In June 2001, MBK Engineers completed an evaluation of the SWRCB's Water Availability Analysis.