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C0 CD ....~ ",--1 l.,:J RULES AND REGULATIONS FOR A!l.lINISTRATION OF THE RIO GRANDE COMPACT t.._) A Compact, known as the Rio Grande Compact, between the States of Colorado, New Mexico and Texas, having become effective on May 31, 1939, by consent of the Congress of the United States, which equitably apportions the waters of the Rio Grande -above Fort Quitman and permits each state to develop its water resources at will, subject only to its cbligations to deliver water in accordance with the schedules set forth in the Compact, the following Rules and Regulations have been adopted for its administration by the Rio Grande Compact Commission; to be and remain in force and effect only so long as the same may be satisfactory to each and all members of the Commission, and provided always that on the objection of any member of the Commission, in writing, to the re- maining two members of the Commission after a period of sixty days from the date of such objection, the sentence, paragraph or any portion or all of these rules to which any such objection shall be made, shall stand abrogated and shall thereafter have no further force and effect; it being the intent and purpose of the Commission to permit these rules to obtain and be effective only so long as the smne may be satisfactory to each and all of the Commissioners. GAGING STATIONS Responsibility for the equipping, maintenance and operation of the stream gaging stations and reservoir gaging stations required by the pro- visions of Article II of the Compact shall be divided among the signa~ory states as follows: (a) Gaging stations on streams Bnd reservoirs in the Rio Grande Basin above the Colorado-New Mexico boundary shall be equipped, maintained, and operated by Colorado in cooperation with the United state Geological Survey. (b) Gaging stations on streams and reservoirs in the Rio Grande Basin below Lobatos and above San Marcial shall be equipped, maintained and operated by New Mexico in cooperation with the U. S. Geological Survey; the gaging station on the Rio Grande at San Marcial shall like- wise be the responsibility of New Mexico to the extent that this station is not maintained and operated by the International Boundary Commission, or some other federal agency. (c) Gaging stations on Elephant Butte Reservoir and on Cabal10 Reservoir, and the stream gaging stations on the Rio Grande below those reservoirs shall be equipped. maintained end operated by or on behalf of Texas through the agency of the U. S. Bureau of Reolamation. The equipment, method end frequency of measurements at each gaging station shall be suffioient to obtain records at least equal in accuracy to those classified as "good" by the U. S. Geological Survey. Water stage recorders on the reservoirs specifically named in Article II of the Com- pact shall have sufficient range below maximum reservoir level to record major fluctuation. in storage. Staff gages may be used to determine fluctuations below the range of the water stage recorders on these and other large reservoirs, and staff gages may be used upon approval of the Commission in lieu of water stage recorders on small reservoirs, provided that the frequency of observations is sufficient in each case to establish any material changes in water levels in such reservoirs.