|
<br />." -.p n 1
<br />~ /' l; "
<br />...... v~
<br />
<br />Table 4 shows the annual deliveries to I:Iexico since 1962 and includes
<br />data on both total excess deliveries to Hexico and deliveries llhich are in
<br />excess of control schedules. These lleekly control schedules of deliveries
<br />to Mexico are made up of estimated return flows from projects in the Y~a
<br />area, releases from Imperial Dam for sluicing silt away from the settl~ng
<br />basins and river regulation, and additional releases required from upstream
<br />storage. The releases from upstreron storage are held to the minim~ neces-
<br />sary for the sum of all deliveries to meet the United States' comm~tments
<br />for Hater delivery pursuant to the Mexican vlater Treaty and the Hinutes
<br />of the International Boundary and Water Commission. In 1977, water in
<br />excess of the control schedule amounts were delivered to 11exico, in an
<br />amount which has not been exceeded since 1965. l~ost of the excess flow
<br />was due to an intense tropical storm which struck Southern California in
<br />August 1977.
<br />
<br /> TABLE 4
<br /> DELIVERIES TO MEXICO
<br /> COLORADO RIVER SYSTEH
<br /> 1962 through 1977
<br /> (Thousands of Acre-feet)
<br /> Scheduled Excess Excess Over
<br />Calendar Deliveries Control F101'T to Deliveries Control
<br />Year to H&xico Schedule 1.1exico to l'iexico Schedule
<br />1962 1,500 1,752 1,977 477 225
<br />1963 1,500 1,673 2,003 503 330
<br />1964 1,500 1,536 1,655 155 119
<br />1965 1,500 1,554 1,688 188 134
<br />1966 1,5l:.1 1,621 1,656 116 35
<br />1967 1,459 1,515 1,559 100 44
<br />19M 1,500 1,552 1,563 63 11
<br />1969 1,500 1,550 1,566 66 16
<br />1970 1,500 1,553 1,583 83 30
<br />1971 1,500 1,54$ 1,562 62 14
<br />1972 1,500 1,586 1,613* 113 27
<br />1973 1,500 1,621 1,625* 125 4
<br />1974 1,500 1,660 l,665l' 165 5
<br />1975 1,500 1,717 1,728* 22$ 11
<br />1976 1,500 1,706 1,774* 274 68
<br />1977 1,500 1,707 1,779* 279 72
<br />
<br />* Includes 2,591 acre-feet in 1972, 9,405 acre-feet in 1973, 9,6$7
<br />acre-feet in 1971" 8,262 acre-feet in 1975, 10,258 acre-feet in 1976,
<br />and $,992 acre-feet in 1977 for deliveries to City of Tijuana under
<br />provisions of IIinute Ho. 2J.,.0 of the International Boundary and Water
<br />Commission
<br />
<br />Deliveries of Colorado River water to the City of Tijuana on an emer-
<br />gency basis co~nenced in 1972 through facilities of the Metropolitan Water
<br />District, the San Diego County Water Authority, and member agencies of the
<br />Authority. The deliveries are made pursuant to Minute No. 240 of the Inter-
<br />national Boundary and Water Commission, cn1ich provides for emergency deliv-
<br />eries for a term not to exceed five years and \'Thich cTill be accounted as a
<br />
<br />- 5 -
<br />
|