Congressional Budget Office Cost Estimate: H.R. 3080: Water Resources Reform and Development Act of 2013 [open pdf - 36KB]
"H.R. 3080 would authorize the U.S. Army Corps of Engineers (Corps) to construct water projects for mitigating storm and hurricane damage, restoring ecosystems, and improving flood management. The legislation also would authorize the agency to assist states and local governments with levee safety programs and to assist Indian tribes with planning and technical assistance for water resources projects. Finally, H.R. 3080 would direct the Corps to implement a pilot program to enter agreements with nonfederal partners to manage and construct certain projects. Those agreements would be subject to appropriation of all federal costs. Assuming appropriation of the necessary amounts, including adjustments for anticipated inflation, CBO [Congressional Budget Office] estimates that implementing H.R. 3080 would cost about $3.5 billion over 2014-2018 period. Spending would continue for authorized projects after 2018, and CBO estimates that such spending would total $4.7 billion over the 2019-2023 period."
Congressional Budget Office: http://www.cbo.gov/