DWR_4151908

• Title: JULY 1998 SWSI: COLORADO WATER SUPPLY CONDITIONS UPDATE, SURFACE WATER SUPPLY INDEX
• Year: 1998
• Document Type - Publications and Reports: SWSI Monthly Report

COLORADO BASIN July, 1998
Basinwide Conditions Assessment:
The SWSI value of -1.6 indicates that for June the COLORADO RIVER BASIN
basin water supplies were slightly below normal. Flow at the S. Surface Water supply Ind.History
gaging station Colorado River near Dotsero averaged 6,966 cfs
as compared to the long term average of 5,674 cfs. Storage inu. _ - 1}=
Green Mountain,Ruedi, and Williams Fork reservoirs totaled S `: > C
99% of normal as of the end of June. 2—
•
Outlook I o I {
High temperatures and low rainfall will contribute to _ ti 1,1
g P 1 Sro v 1
a dry July and the likelihood of numerous calls on both the a _2—
Colorado mainstem and side tributaries. b
Administrative/Management Concerns
JAN99 JAN90 JAN91 JAN92 JAN93 JAN94 JAN95 JAN96 JAN97 awn
The U.S. Bureau of Reclamation put a call on their MONT,YEAST
Green Mountain Reservoir first fill storage right (153,000
acre-feet) July 7. Their Blue River paper fill (153,000 acre-
feet minimum power releases) has been achieved. Granby,
Dillon,Wolford, and Vega Reservoirs were full while Williams
Fork and Ruedi Reservoirs were not full as of July 1. COLORADO RIVER NR. DOTSERO
FLOW BY WATBI YEAR
3.2
Public Use Impacts 3 - "
2.9
Fruit and vegetable growers in and around Mesa County 2.6
expect to meet, if not exceed, bumper crop statistics from the 2.4
last ten years. Barring hail storms, a banner year is expected 2
for cherries, apricots, pears, peaches, grapes, and vegetables i<o
1.6
from this area. ,.,
r▪ 1.2
O. •
0.0.4
O.2
0
Oct Nov O. Jan Fib March /orl I May Jun. July Asp Sept
MONTH
O WET(1964) O DRY(1977) p AVG X 1999
•
REPRESENTATIVE RESERVOIRS
COLORA00 R I YCR SAS1 N
130
120
100
70
90
•o 7\\\\\,
30
zo
10 //\\ //\\
cr..Mountain Ry.d1 WI I I Isms Feria
® Avg. 5/30 Oont•nt. ® 6/30/6!Contents
7