Water resources problems affecting the Northeast [electronic resource] : the drought and present and future water supply problems : hearings before the Subcommittee on Water Resources of the Committee on Public Works and Transportation, House of Representatives, Ninety-seventh Congress, first session, March 19 and 20, 1981, at Newark, N.J., March 23, 1981, at New York, N.Y., March 30, 1981, at Philadelphia, Pa.