Congressional Budget Office Cost Estimate: S. 601: Water Resources Development Act of 2013 [April 9, 2013] [open pdf - 42KB]
"S. 601 would authorize the Army Corps of Engineers (Corps) to construct water projects for mitigating storm damage, restoring ecosystems, and reducing erosion on inland and intracoastal waterways. The legislation also would authorize the agency to establish grant programs to assist local and state governments with levee safety and rehabilitation programs. Finally, S. 601 would authorize the Corps and the Environmental Protection Agency (EPA) to provide loans or loan guarantees to state and local governments and certain nongovernmental entities to complete water infrastructure projects."
United States Congressional Budget Office: http://www.cbo.gov/