The theory and function of Marxian water rent in the United States

Marx's theory of ground rent has been widely used to help understand the trinity of land, labor, and capital. However, limited attention has been paid to the role of water within the Marxian rent framework. This lack of attention proves troubling due to the role of surface waters as an essential means of production throughout capitalism. Here I restate Marxian ground rent in the form of water rent and discuss the function of water-rent in the two dominant surface water rights doctrines of the United States-the riparian doctrine and the doctrine of prior appropriation. In doing so, I revise the distinction between differential rent 1 and differential rent 2 to provide more analytically useful categories. Paying special attention to issues of drought and scarcity, I fully articulate the function of Marxian rent and its four forms for both surface water rights doctrines, while clearly stating where they do and do not differ.