A water budget is an accounting of the rates of the inflows, outflows, and changes in water storage in a specific area; they are important to understanding the movement of water into, within, and out of a watershed. Water budgets also provide an understanding of historical conditions and how future changes to supply, demand, hydrology, population, land use, and climate may affect the water resources of the area.
Water budgets are a required element of Groundwater Sustainability Plans; however, water budgets are not intended to be a direct measure of groundwater sustainability but rather to provide GSAs with an understanding of the basin that will inform and help guide future projects and management actions in order to achieve sustainability for the basin.
WATER BUDGET DOCUMENTS
water budget webinars
- Water budget accounting templates and other useful information, additional resources to go with DWR's Water Budget Handbook at the CNRA Open Data platform.
- Storymap: Comprehensive Water Budget — A Story of Innovations for Water Accounting, from the Department of Water Resources
- Water Budget Development for SGMA Compliance, Case Study: Ukiah Valley Groundwater Basin, from Maritza Flores Marquez, et al, Universities Council on Water Resources
- Groundwater Law – Physical – “the water budget myth”, by Dr. Jay Lund at the UC Davis California Water Blog
- Water budgets across the United States, webpage from the USGS
- Modeling the Water Budget: Classroom activity from JPL
- Water budget science in Texas, webpage from USGS