Rule of capture

English common law rule on natural resources

The rule of capture or law of capture, part of English common law and adopted by a number of U.S. states, establishes a rule of non-liability for captured natural resources including groundwater, oil, gas, and game animals. The general rule is that the first person to "capture" such a resource owns that resource. For example, landowners who extract or “capture” groundwater, oil, or gas from a well that bottoms within the subsurface of their land acquire absolute ownership of the substance even if it is drained from the subsurface of another’s land. The landowner who captures the substance owes no duty of care to other landowners. For example, a water well owner may dry up wells owned by adjacent landowners without fear of liability unless the groundwater was withdrawn for malicious purposes, the groundwater was not put to a beneficial use without waste, or "such conduct is a proximate cause of the subsidence of the land of others." A corollary of that rule is that a person who drills for groundwater, oil, or gas may not extract the substance from a well that bottoms within the subsurface estate of another by drilling on a slant.

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