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<br />RULES AND REGULATIONS
<br />
<br />RESERVOIR CAPACITIES L1
<br />
<br />Colorado shall file with the Commission a table of areas and capacities for each
<br />reservoir In the Rio Grande Basin above Lobatos constructed after 1937; New Mexico shall
<br />file with Ihe Commission a table of areas and capacities for each reservoir In the Rio Grande
<br />Basin between Lobatos and San Marcial constructed after 1929; and Texas shall file wllh the
<br />Commission tables of areas and capacities for Elephant Butte Reservoir and for all other
<br />reservoirs actually available for the storage of water between Elephant Butte and the first
<br />diversion to lands under the Rio Grande Project.
<br />
<br />Whenever It shall appear that any table of areas and capacities Is In error by more
<br />than five per cent, the Commission shall use its best efforts 10 have a re-survey made and a
<br />corrected table of areas and capacities to be substituted as Soon as practicable. To the end
<br />that the Elephant Butte effective supply may be computed accurately, the Commission shall
<br />use its besl efforts to have the rate of accumulation and the place of deposition of silt In Ele-
<br />phant Butte Reservoir checked at least every three years.
<br />
<br />ACTUAL SPILL f2.
<br />
<br />(a) Water released from Elephant Butte in excess of Project requirements, which
<br />is currently passed through Caballo Reservoir, prior to the time of spill, shall be deemed to
<br />have been Usable Waler released In anticipation of spill, or Credit Water If such release
<br />shall have been authorized.
<br />
<br />(b) Excess releases from Elephanl Butte Reservoir, as defined In (a) above, shall
<br />be added to Ihe quantity of water actually In storage In that reservoir, and Actual Spill shall
<br />be deemed to have commenced when this sum equals the total physical capaclIy of Ihat res-,
<br />ervolr, to the level of the uncontrolled spillway, i.e. -2,219,000 acre-ft in 1942.
<br />
<br />(c) All water actually spilled at Elephant Butte Reservoir, or releaSed therefrom, In
<br />excess of Project requirements, which Is currently passed through Caballo ReservoIr. after
<br />the time of spill, shall be considered as Actual Spill, provided that the lotal quantity of water
<br />then In storage In Elephant Butte Reservoir exceeds Ihe physical capaclIy of that reservoir
<br />at the level of the sill of the spillway gates, I.e. -1,830.000 acre-It In 1942.
<br />
<br />(d) Water released from Caballo Reservoir In excess of Project requirements and
<br />In excess of water currently released from Elephant Butte Reservoir. shall be deemed
<br />Usable Water released. excepting only flood water entering Caballo Reservoir from tributar-
<br />Ies below Elephant Butte Reservoir.
<br />
<br />DEPARTURES FROM NORMAL RELEASES ~
<br />
<br />For the purpose of computing the time of Hypothetical Spill required by ArtIcle VI
<br />and for the purpose of the adjustment set forth In Article VII, no allowance shall be made for
<br />the difference between Actual and Hypothetical Evaporation, and any under-release of
<br />usable water from Project Storage In excess of 150,000 acre-It In any year shall be taken as
<br />equal to that amount.
<br />
<br />L1 Amended at Eleventh Annual Meeting, February 23.1950.
<br />
<br />f2. Adopted at Fourth Annual Meeting, February 24,1943.
<br />
<br />~ Adopted June 2. 1959; made effective January 1, 1952.
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