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<br />be investigated basin-by-basin. Generally, the number of rights holders is <br />small, and ownership of significant rights is further concentrated. compared <br />to other established property markets, such as real estate. <br /> <br />* The report of Kaiser and Boadu, using data from TNRCC as compiled by <br />TWDB, shows: <br /> <br />. There are over 11 ,000 authorized surface water permits. <br /> <br />. River authorities provide water for approximately 20 percent of the <br />consumptive water use of the state. <br /> <br />. "About 1 percent of the water rights holders control 95 percent of the <br />state's surface water rights."' <br /> <br />* More recent data compiled by TNRCC staflfrom the TNRCC Water Rights <br />Database further support the observations noted above by indicating that <br />less than 5 percent of the number of active water rights account for about 95 <br />percent of the total volume of surface water rights authorized. <br /> <br />SURFACE WATER RIGHTS BY TYPEI=SIZE (in fIlillions of acre-ft: maf), <br />and NUMBER 0 RIGHTS <br /> <br />~ <br /> <br />~ <br /> <br />Ri!;lhts aut~in!;l more than ~oo acre-ft <br /> <br />Municipal <br />Industrial <br />Irrigation <br />Mimng <br />Hydroelectric <br />Other <br />TOTAL <br /> <br />9.3 <br />17.6 <br />5.8 <br />0.3 <br />10.4 <br />0.1 <br />43.5 <br />100% <br /> <br />494 <br />338 <br />4780 <br />114 <br />24 <br />830 <br />6196 <br />100% <br /> <br />8.7 <br />17.2 <br />4.4 <br />0.2 <br />10.4 <br />0.04 <br />40.9 <br />94% <br /> <br />99 <br />84 <br />63 <br />3 <br />24 <br />2 <br />274 <br />4% <br /> <br />JIIotes:. A single right may authorize more than one type of use. The 43.5 maf total <br />orautfiorized use Includes impoundments and authonzed but unbuilt reservoirs. The <br />industrial use includes cooling uses of which some is brackish water from coastal <br />estuaries. <br /> <br />A Market Information System And Database Sufficient To Determine Water <br />Availability. Price. Transaction Costs. And Transfer Procedures <br /> <br />* Generally, the current information system should be viewed as a constraint <br />on emergence of markets for most of the state, with limited exceptions. The <br />Rio Grande Watennaster serves as a focal point for infonnation for the active <br />Lower Rio Grande Valley market. Specialized publications, notably the <br /> <br />'Ibid., p. 108,fn. 319 <br /> <br />· Texas NatUral Resource Conservation Commission, unpublished compilation of Water <br />Rights Database, Inter-agency Memorandum, October 12,1994, pp. 3, Kariann Sokulsky. <br /> <br />5 <br />