WSPC06908

• File Number: 8230.100.10
• Description: Colorado River - Interstate Litigation - Arizona Vs California
• State: AZ
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 1/29/1998
• Author: DOI-BOR
• Title: AZ Vs CA - Compilation of Records - RE- Supreme Court Decree Dated 03-09-64 - Calendar Year 1997
• Water Supply Pro - Doc Type: Report/Study

DIVERSIONS FROM MAINSTREAM-AVAILABLE RETURN FLOW
AND CONSUMPTIVE USE OF SUCH WATER
CALENDAR YEAR 1997
STATE OF ARIZONA

WATER USER

01/13/99 (ACRE-FEET)

NOV

DEC TOTAL 1/

YUMA AREA OFFICE, USBR
DIVERSION FROM WELLS

DIVERSION 21
RETURNS
CONSUMPTIVE USE
PUMPED FROM SOUTH GILA WELLS (OPOC'S) RETURNS 5/

OTHER USERS PUMPING FROM COLORADO
RIVER AND WELLS IN FLOOD PLAIN DAVIS DIVERSION 6/
DAM TO INTERNATIONAL BOUNDARY RETURNS
CONSUMPTl VE USE

ARIZONA TOTALS

DIVERSION
RETURNS
CONSUMPTl VE USE

JAN

JUL

AUG

OCT

FEB

MAR

APR

MAY

JUN

SEP

5Z 41 70 76 93 113 123 118 93 78 55 54 968
0 0 0 0 0 0 0 0 0 0 0 0 0
52 41 70 76 93 113 123 118 93 78 55 54 968 c.:l
6274 5408 6274 5835 5868 5521 5714 5938 4986 5668 4794 5399 67679 C;;
<:.)
(.Q
4103 2233 2673 3043 3341 3744 3725 3798 2586 2303 2146 1750 35444 ...-..
r-'

234316 303957 345934 358052 426554 339771 283709 252696 174059 249259 288905 240200
39931 43551 58352 54578 59484 66620 48298 51925 56235 53937 52897 57718
194385 260406 287582 303474 367070 273151 235411 200771 117824 195322 236008 182482

3497412
643526
2853886

NOTE: The term 'CONSUMPTIVE USE' in this tabulation means diversions including underground pumping, less measured return flow and less current
estimated unmeasured return flow to the river.

11 No surface returns unless shown.
21 Reported annual total only, distributed monthly according to nearby users.
31 Calculated by assuming an annual diversion of 6 ac-ft per irrigated acre.
41 Calculated using monthly power records.
51 Pumped from underground and credited as return flow to Yuma Mesa Division but unassigned to disticts as returns.
Includes quantities of drainage from Yuma Mesa, Unit B, as weLL as from South Gila Valley.
61 Details on Arizona Supplemental Sheets.
71 summation for the Yuma Mesa Division, consisting of the North Gila Valley Irrigation District, the Yuma Irrigation District, and the Yuma Mesa
Irrigation & Drainage District is as follows:
Item Annual Totals (Acre-Feet)

Diversion at Iq:>erial Dam AI 322407
P~ from wells 5714
Surface returns from South Gila Valley (S.Gila Canal ~asteway) 3500 *
Return flow North Gila Valley (6 drains & wasteways) 1Q162 *
Return flow South Gila Valley wells (OPOCI s) 67679
Return flow Yuma Mesa Outlet Drain 91 26639 *
Return flow protective and regulatory pumping unit CI 382 *
Estimated unmeasured groundwater return flow 01 26967
Return flow share of Gi La Main Canal loss EI 642 *
Subtotal return flow FI 135970 135970 check from above
Consumptive Use (see note above) 192151 192151 check from above
(A) Total for the North Gila Valley, The Yuma Irrigation and the Yuma Mesa Irrigation and Drainage Districts. and 'Unit Bl.
(B) Estimated at 85 percent of the Yuma Mesa Outlet Drain with balance credited to 'Unit 8'.
(C) Estimated at 85 percent of Protective and Regulatory Pumping Unit with balance credited to 'Unit B'.
(D) Estimated at 38 percent of the North Gila Valley Diversion at Imperial Dam plus 14 percent of Yuma Irrigation District diversion at
Imperial DBm. (Based on analysis of the USGS Report 83-4220 entitled IA Method for Estimating Ground-Water Return FLow to the
Lower Colorado River in the Yuma Area')
(E) Diversion*milage weighted share of Gila Main Canal loss less canal surface evaporation (1397 af/yr) and phreatophytes (2154 af/yr).
(F) Additional unmeasured amounts of return flows from the Yuma Mesa Irrigation and Drainage District. 'Unit 8', the Cocopah Indian
Reservation, and the Yuma County ~ater Users Association (YCWUA) are utilized to meet consumptive uses in the United States and in
partial satisfaction of the Mexican Treaty obLigation. Some of thes underground fLows are recovered by pumping from wells on the

12