[20050321]RS22085_美国-墨西哥关于格兰德河下游水域的争端.pdf

1 Convention Between the United States and Mexico Providing for the Equitable Distribution ofthe Waters of the Rio Grande for Irrigation Purposes, May 21, 1906, U.S.Mex., 34 Stat. 2953.2 An acre-foot is about 326,000 gallons of water, enough to cover an acre a foot deep. Congressional Research Service The Library of CongressCRS Report for CongressReceived through the CRS WebOrder Code RS22085March 21, 2005The United States Mexico Dispute over theWaters of the Lower Rio Grande River Stephen R. ViaLegislative AttorneyAmerican Law DivisionSummaryThe waters from the lower Rio Grande River are shared between the United Statesand Mexico pursuant to a 1944 Treaty. Beginning in 1992, Mexico claimed that“extraordinary drought” prevented it from fully meeting and repaying its water deliveryobligations under the Treaty. Water supplies for users in South Texas (as well asMexico) were significantly reduced as a result. Mexico owes the United Statesapproximately 730,700 acre feet of water and is under threat of international litigationfor allegedly expropriating water at the expense of South Texas water users, though itrecently reached an agreement with the United States to eliminate its water d