I get a lot of questions about Colorado water law from clients–anyone from prospective ranch buyers to conscientious developers. Water law is a specialized area of law. This article is the first in a series of introductory articles on Colorado Water law. This first post will cover the basic prior appropriation doctrine, which most western states follow. Colorado is the purest form of prior appropriation.
I. The Prior Appropriation Doctrine
Under the Colorado Constitution, water is a public resource owned by the people. With certain exceptions, mere land ownership does not give the landowner any right to water under his property or flowing through that property. Nonetheless, an individual or other legal entity may acquire a right to divert water for beneficial use. This is a water right.
Under the “doctrine of prior appropriation,” which is embodied in the Colorado Constitution, statutes, and case law, appropriative water rights are created by the intent to place water to beneficial use, action to implement that intent (usually the location or construction of diversion facilities or the filing of a water court application), and actual beneficial use of water. The date of the intent or action, whichever occurs later, is the “appropriation date” of the water right.
The water right does not have to be decreed in the Water Court. It exists as a property right when water has been placed to use. But the adjudication process confirms the existence of the right and is required in order to establish an enforceable priority for the water right. This is because the enforceable priority of a water right against other rights is based, first, upon the court “adjudication date” of the water right and, second, upon the appropriation date. The adjudication date generally is the calendar year in which the water right application was filed. For older decrees (prior to the 1969 Water Right Determination and Administration Act), the adjudication date is the date of the Court’s decree.
Priority of right is important because the owner of the most senior water right is entitled to divert the full decreed amount of that water right for beneficial use before more junior appropriators from the same source are entitled to divert any water. This differs from riparianism (the doctrine followed east of the 100th Meridian), under which all users must reduce their diversions proportionately in times of shortage. The appropriation doctrine has been characterized as the concept of “first in time, first in right.”
This “first in time, first in right” is the basic tenet of the prior appropriation. Please ask your questions in the comment section.
The Fish and Wildlife Service recently proposed the delisting of the Western population segment of wolves, which includes all of Wyoming, Idaho, and Montana, and the eastern third of Oregon and Washington. To “delist” these populations means to take them off the endangered species list, which in turn removes the protections provided by the ESA. The Center for Biological Diversity argues this action is premature and that this area is far too big to be considered a “distinct population segment.”
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