WSP02966

• File Number: 8278.400
• Description: Title I - Mexican Treaty
• Basin: Colorado Mainstem
• Date: 12/1/1944
• Author: R. J. Tipton
• Title: Engineering Memorandum on the Treaty With Mexico Relating to the Utilization of the Waters of Certain Rivers - Prelim Draft of Revisions & Additions to March 1944 Report
• Water Supply Pro - Doc Type: Publication

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States as indioated in the following table whioh is based upon the estimated
water supply for the 46-year period, 1897 to 1943, inolusive,

No. Item

Aore-feet

1. Virgin flow - Colorado River System at
International Boundary

17,751,000

2. Estimated salvaged water along the main
stream below Boulder Dam (minimum)

380,000

3. Total water supply

18,131,000

4. Water allooated to Upper and Lower
Basins by Artiole III (a) and (b)
of the Colorado River Compaot

16,000,000

5.

Remainder to be allooated under the
provisions of Artiole III (0) and
(f) of the Compaot

2,131,000

""

6. Water allooated to Mexioo by the provisions
of the Treaty (III (0) water under the
Compaot)

1,1500,000

7.

Remainder to be allooated after 1963
under the provisions of Artiole
III (f) of the Compaot (minimum)

631,000

The III (f) water in the above table was estimated on the assumption that
the Lower Basin would reoeive oredit for return flow reaohing the river below
Imperial Dwn. If the Lower Basin should not reoeive oredit for suoh return
flow, the III (f) water would be inoreased by over 1,000,000 aore-feet. The
III (f) water also would,be inoreased by any inorease in the salvage of water.

It is oonol~ed that reservoirs whioh will be oonstruoted and operated in
the Colorado River Baein under ultimate oonditions will have suffioient oapaoity
to equate fully the flow of the river to the average indioated in the table.

.
.

9. Present oontraots for the purohase of eleotrioal energy generated at
Boulder Dam will not be advereely affeoted by the treaty. On the other hand,
the amount of firm energy that oan be generated in periods of low runoff might
be inoreased by the terms of the treaty.

.
,,'

10. The State of California has oontraots with the Seoretary of Interior
for the de livery of an aggregate of 5,362 ,000 aore-feet of water from Lake Mead,
providing suoh water is available under the terms of the Colorado River Compaot
and the provisions of the Bounder Canyon Projeot Aot. Four million four hundred