It also includes a discussion of the economically optimum level of investment. The study concludes with a discussion of the various market based initiatives and policy approaches to provide the necessary finance in cost-effective ways. In this context, consideration is given to future sources of finance for upgraded and new capital infrastructure; and private-public partnerships to raise capital and improve long term asset management for renewal of irrigation infrastructure. Table 2 displays an example of a cost and return budget for selected crops grown in the Lower Rio Grande Basin of the U.S. state of New Mexico for 2006.