BOARD00039 ‎(2)‎

• Board Meeting Date: 9/20/2006
• Description: WSP Section - Consumptive Uses and Losses and High-Altitude Crop Coefficients
• Board Meetings - Doc Type: Memo

Agenda Item:! 1
Seplember 1l).:!O, 2006 Board f\..1celing
Page 6 oft!

A comparison of Ihe lolal consumptive uses .md losses as estimated by USBR and CRDSS for the .
Colof"<Hlo River Basin within Colorado is shown in Figure 3. These totals include Colorado's share of
CRSP evaporation Ihroughout the syslem_ As can be seen from this ligure and those above, significant
diffen:nces exist in some years between the CU numbers calculated by USBR and CRDSS. Much of the
difference in agricultural CU is due to the high-allilllde coefficients now being used in StatcCU. DSS stafT
would like to approach the USBR concerning the possibility of their accepting Ihis methodology into their
own CU c.llculatiolls.

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Figure 3
Sate of Color3do
Colorado RIVer Sasin Depletions: 1971 to 2000
CROSS \15, USBR

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Staffret:ommends that BO;lrd dIrect staff to work with USBR in getting the high-altitude approat:h
accepted by USUR and incorporated into their consumptive uses and losses rl.'porting. SlalTalso asks for
direction 011 raising the issue with the Upper Colorado River Commission.

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