Hearing Before the Subcommittee on Water and Power of the Committee on Energy and Natural Resources, United States Senate, One Hundred Tenth Congress, Second Session, on S. 2259, H.R. 31, H.R. 716, H.R. 786. H.R. 813, H.R. 1140, H.R. 1503, H.R. 1725, H.R. 1737, H.R. 2614, April 8, 2008