Goal 2: Improve Water Supply Reliability

Upstream storage measures the water storage capacity available upstream of a location relative to the total water supply at that location. The World Resources Institute used this indicator in the Aqueduct 2.0 project.

Total agricultural, residential, and commercial water demand, i.e. demand for all uses other than environmental needs and basic human drinking water requirements.

The water footprint is the sum of the water used directly or indirectly to produce goods and services consumed by humanity. Agricultural production accounts for most of global water use, but drinking, manufacturing, cooking, recreation, washing, cleaning, landscaping, cooling, and processing all contribute to water use.

Volume of water re-used (same volume can count more than once) as a fraction of total water used, including onsite, or recycled.

Water Risk refers to the risk to water supplies from changes in climate and water withdrawals. The World Resources Institute used this indicator in the Aqueduct 2.0 project.

Water scarcity is a function of water availability and water use. This index is used by the global Environmental Protection Index and represents the over-use of water in a region.

Percent likelihood per year, over the next 20 years, of water shortage.

Water stress index is typically defined as the relationship between total water use and water availability. The closer water use is to water supply, the more likely stress will occur in natural and human systems. This indicator has been used by the United Nations and others.

Distance traveled for units of drinking and irrigation water. The long-distance movement of water is one of the most energy-intensive activities in California and may cause social, economic, and environmental harm in the source areas.