Which term describes water rights that are acquired by physical control over the water for a beneficial use?

• A. Riparian
• B. Public trust
• C. Prescriptive
• D. Appropriative

Answer: (D)

Appropriation rights are water rights earned by physically diverting water and applying it to a beneficial use. The defining idea is that rights are granted based on a concrete act of taking the water and putting it to a useful purpose, with a priority date assigned to that use. This creates a first-come, first-served system where those who first diverted and used the water have senior rights during shortages, regardless of where their land sits relative to the source.

This focus on actual control and beneficial use distinguishes it from other concepts. Riparian rights, for example, originate from land ownership along a watercourse and are limited by that adjacent ownership, not by the timing of a diversion. Prescriptive rights rely on long, unauthorized use over time to establish a right, rather than a formal grant tied to a deliberate diversion for a beneficial use. Public trust concerns involve the state holding water for public purposes rather than private appropriation through control and use.