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<br />NEW MEXICO <br /> <br />1. Federal and state data used in the study <br /> <br />In general the Modified Central Case (MCC) data provided by WRC <br />were compiled for aggregated subareas which in most cases do not follow <br />state boundaries or hydrologic areas within states. In the Rio Grande <br />Region, ASA 1302 includes parts of Colorado, Texas, and New Mexico and <br />comparisons of SRF and MCC data in New Mexico cannot be made; thus <br />differences cannot be identified. ASA 1304 does lie entirely within <br />New Mexico; however, comparisons of MCC and SRF data in this ASA did not <br />show general agreement partly because ASA 1304 does not include parts of <br />some counties within the hydrologic area and for which SRF data were <br />compiled that contribute to the economy and water supply of the Pecos <br />River Basin. For the most part, MCC data is not useful in New Mexico in <br />providing economic, water, and related land resource statistical information. <br /> <br />Existing laws, regulations, and compacts that regulate and control <br />water use within states or between states appear to be ignored. State laws, <br />interstate compacts, and court decrees affect present and future use of <br />water supplies and must be considered in determining the availability of <br />supplies for various uses at various locations. <br /> <br />The State recommends future studies either be based on state and <br />hydrologic boundaries or the date be disaggregated so that it is <br />available to the states for these breakdowns and that the studies consider <br />the several legal constraints which affect the place of use of the <br />available water supplies. <br /> <br />2. Group A Problems in the Rio Grande Region in New Mexico <br /> <br />During Activity 3, Phase II, five Group A problems in the Rio <br />Grande Region in New Mexico were defined. This Region includes part <br />of ASA 1302 and all of ASA 1304. Counties in ASA 1302 are generally <br />located in the Rio Grande Basin and those in ASA 1304 are generally <br />in the Pecos River Basin. <br /> <br />Problem No.1 Common problems throughout the Rio Grande Region <br />in New Mexico are as follows: 1) limited surface-water supplies; 2) <br />in much of the area, yields from ground-water aquifers are low-to-moderate <br />and the quality of water is generally poor; 3) surface-water runoff results <br />in flood damage in urban and rural areas; 4) head-cutting and sheet <br />erosion destroy range and cropland, add sediment to the streams and affect <br />crop production and livestock grazing capabilities; 5) a study by the u.S. <br />Bureau of Outdoor Recreation indicates large deficiencies in surface-water <br />supplies required for projected recreation demands; 6) quantification of <br />Indian and federal water rights is needed. <br /> <br />I' ,. ') ,- r- 8 <br />',I ...) .... ,..) <br /> <br />11 <br />