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Appropriative Rights

Appropriative Rights

California law allows surface water to be diverted at one point and used (appropriated) beneficially at a separate point.

This is in contrast to a riparian right, which is based on ownership of the property adjacent to the water.

An appropriative right to use water exists without regard to the special relationship between land and water. It is based on physical control, beneficial use and, if initiated after 1914, on a permit or license. Appropriative rights may attach to surface water that exists in excess of superior riparian claims, and to groundwater. They depend upon continued use and may be lost by non-use. Appropriative rights may be sold or transferred. Unlike riparian rights, long-term storage of water is considered an acceptable exercise of an appropriative right.

Appropriative Rights Overview

This system of appropriative rights dates back to the Gold Rush, when miners diverted water from its source, often for hydraulic or placer mining. To stake their water claims, miners followed a practice similar to the one they used for staking their land claims for gold—they posted a notice of their claim to the water at the point of diversion.

Mining communities recognized and protected the rights of “posted” appropriators, and the practice of appropriating rights to water on public lands as did the state Supreme Court in the 1855 landmark case of Irwin v. Phillips.

In 1914, the Water Commission Act formalized the appropriation system and centralized appropriative water right records at the state level (now the State Water Resources Control Board). Under the act, the state required new appropriators to obtain a permit from the state prior to diverting water.

When one applies to appropriate water, the application must specify where the water will be used, period of diversion, purpose for which the water will be used, and point and type of diversion.  The date of first appropriation and the estimated size of the completed project are also critical to establishing an appropriator’s seniority on the stream and the volume of water to which the right applies.

In times of drought when there is not enough water in the stream to satisfy all claims, the most recent claim is the first to curtail its diversion. Appropriators with superior (generally older) claims are denied water in inverse order of priority. If the water shortage is extreme, even the most senior appropriators will be required to give way to all  riparian rights on the water  source. [See also Groundwater Law.]

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