|
<br />C'J
<br />LfJ
<br />C)
<br />....
<br />C;
<br />o
<br />
<br />ther recommended that the amount and rate
<br />. of return flow to the river be determined in
<br />defining consumptive use quantities, and
<br />proposed that adequate time be given for
<br />water users to consider proposed determina-
<br />tions for reductions in the amount of water
<br />to be delivered. In a letter dated September
<br />8, 1969, the Attorney General notified the
<br />Regional Director of the Bureau of Reclama-
<br />tion of California's recommendations.
<br />Deliveries to Mexico. The Bureau of
<br />Reclamation maintains a control schedule
<br />which includes scheduled deliveries to Mex-
<br />ico plus releases from storage for sluicing,
<br />river regulation, and other purposes.
<br />Scheduled deliveries, control schedule
<br />amounts, and excess deliveries to Mexico for
<br />recent years are shown in Table 4.
<br />Plate 9 shows deliveries to Mexico by years
<br />from 1951 through 1969, and Plate 10 shows
<br />deliveries by days for water year 1968--69.
<br />
<br /> Table .4
<br /> DELIVERIES TO MEXICO
<br /> Colorado River System
<br /> (Thousands of Acre-Feet)
<br /> Scheduled Excess Excess
<br /> Deliveries Deliveries Over
<br />Water ro Control Flowro to Control
<br />Year Mexico /I Schedule Mexico Mexico Schedule
<br />1962 ........ 1,500 1,540 1,763 263 223
<br />1963 ........ 1,500 I,B73 2,113 613 240
<br />1964 ........ 1,500 1,549 1,776 276 227
<br />1965 ........ 1,474 1,502 1,594 120 92
<br />1966 ........ 1,541 1,632 1,720 179 BB
<br />1967 ........ 1,459 1,517 1,566 107 49
<br />196B ........ 1,4BB 1,541 1,563 75 22
<br />1969 ........ 1,491 1,545 1,551 59 6
<br />
<br />. The water year roral of scheduled deliveries is not necessarily the \,500,000
<br />Acre.fool calendar year obligation under the Mexican Water Treaty.
<br />
<br />Extremely tight river control in recent
<br />years can be seen by comparison of total ex-
<br />cess deliveries to Mexico over the control
<br />schedule, as shown in Table 4.
<br />
<br />Table 5
<br />SUMMARY OF OPERATIONS BY AGENCIES BELOW PARKER DAM
<br />FOR WATER YEAR 1969
<br />
<br />Disposition of Water Ordered
<br />But Not Taken
<br />
<br />District
<br />
<br />Scheduled Ordered but Percent -not Delivered Taken by
<br />Order not taken taken to storage Others
<br />
<br />Excess
<br />Delivered
<br />to Mexico
<br />
<br />California
<br />Coachella Valley County Water Dist. ................ 460,126 0 0
<br />Imperial Irrigation District.............................................. 2,772,893 11,564 0.4 9,41B 50B 1,63B
<br />Reservation Division, Yuma Project .............................. B3,B61 11,OB6 13 4,767 6,265 54
<br />Palo Verde Irrigation District ........................................ 910,012 22,725 2.5 20,794 1,594 337
<br />California Total...................................................... 4,226,892 45,375 (1.1) 34,979 B,367 2,029
<br />Arizona
<br />North Gila Valley Irrigation Dist. ................................ 56,B05 8,729 15.4 5,964 2,729 36
<br />Wellton.Mohawk Irrigation District .............................. 504,375 22,263 4.4 13,902 8,284 77
<br />South Gila Valley Unit ....... ............................................ 49,367 3,443 7.0 2,531 900 12
<br />Yuma Mesa Irrigation & Drain. Dist............................. 24B,667 15,566 6.3 9,BB3 5,612 71
<br />Unit B Irrigation and Drain. Dist. ................................ 39,699 3,467 B.7 2,336 1,123 B
<br />Yuma County Water Users, Assoc. .............................. 325,130 33,113 10.2 14,B77 17,794 442
<br />Colorado River Indian Reservation ................................ 523,646 11,132 2.1 B,23B 2,894 0
<br />Arizona Total ........................................................ 1,747 ,6B9 97,713 (5.6) 57,731 39,336 646
<br />Total California and Arizona ...................................... 5,974,581 143,OBB (2.4) 92,710 47,703 2,675
<br />
<br />29
<br />
<br />II
<br />,I
<br />Iii
<br />I,
<br />I
<br />
|