BOARD01635

• Board Meeting Date: 3/26/1945
• Description: Table of Contents and Minutes
• Board Meetings - Doc Type: Minutes

involved in the caloulations be given~in the Report.

36. Directing attention next to so-called "depletion allowances,"
the Report allows for future depletions in the Upper Basin of 491,000
acre feet annually, by projects under construction but not completed,
and by projects authorized but not oonstructed; and allows for future
depletions in the Lower Basin of 4,265,200 acre feet annually, by the
"irrigllble" lands' of existing projeots not heretofore or now irrigated.
Both allowance quanti ties appear to be based on long-time average or
normal conditions. Allowanoes in the Upper Basin are reported by indiv-
idual projects, as f'ollo\om: 38~OOO acre feet of' export diversions by
Provo projeot under construction in Utah; '29,000 acre feet of depletions
by' 20,000 aores to be irrigated by Eden project under oonstruotion in
Wyoming; '4,000 acre feet of depletions by 2,000 acres of neW' land to be
irrigated by Paonia projeot authorized for oonstruction in Colorado;
320,000 acre feet of export diversions by Colorado-Big Thompson projeot
under construction in Colorado; and 100,000 acre feet of export diver-
sions for City of Denver by proj eot now par'tial1y developed. Data for
the Nancos Project (now under construction)' _s not given. Allowanoes
in: the Lower Basin are not listed by individual proje cts, but are re-
ported as a total of 4,265,200 acre feet for the future irrigation of
579,000 acres of "irrigable" land in Arizona and Californill, in oonnec-
tl'on with proj eots 1 i'sted at page 2~7 of the Report that are said to
have irrigated 540,000 acres in 194~, all in the Boulder Division. Seg_
regation~ of the total Lower Basin allowance (by Colorado engineers) in-
di'cate that the Report allows' 1,000,700 acre feet of depletions for the
future irrigation of 239,000 acres of "irrige.ble" landS' in Arhone., in
cohneotion with projects said to have irrigated' 77,900 acres in 194'; and
allows ~,264,500 acre feet for the future irrigation of ~42,lOO acres of
"irrigable" land in California, in conneotion with projeots said to have
irrigated 460,900 acres in 1943. The allowanoes for future depletions in
both basins are treated in the Report as "present. depletions,' and are
summarized and oombined with the existing depletions hereinbefore dis-
cussed. Colorado suggests that allowanoes fbr future depletions should
be summarized separately from existing depletions, should be estimated
under definitions that are uniformly applioable to both basins and all
States alike.

37. For purposea of this discussi on 'the following table has been
prepared by adding the depletion allowances of the Report to the exist-
ing depletions, to indicate the conditions and relations that ..culd pre-
vail after all projeots for which allowances are made come into oper-
ation, assuming that in the meantime no other potenth.l projeots e.re oon-
structed.

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