DWR_4151854

• Title: JANUARY 1996 SWSI: COLORADO WATER SUPPLY CONDITIONS UPDATE, SURFACE WATER SUPPLY INDEX
• Year: 1996
• Document Type - Publications and Reports: SWSI Monthly Report

SOUTH PLATTE BASIN
Basinwide Conditions Assessment:
The SWSI value of 2.9 indicates that for December the SOUTH PLATTE RIVER BASIN
►asin water supplies were above normal. Reservoir storage, s
, Slrlau*Ater Supply I°°""N sto r
the major component in this basin in computing the SWSI 4_ _
value, was 121% of normal as of the end of December. - ' . _ 21
w 9- JC
Storage in the major plains reservoirs, Julesburg, North _1 fir:ili.
' _ =Sterling, and Prewitt, increased by 13,076 acre-feet during 2 Li, � ;:December and are at 71% of capacity. Storage in the majorT "' , W=upper basin reservoirs, Cheesman, Eleven Mile, Spinney, and i DA - -e-
ti—
Antero, decreased by 8,410 acre-feet and are at 91% of _ '
capacity. The Natural Resources Conservation Service reports _ :1
January 1 snowpack as 138%of normal. The mean daily flow o -2 I i
of the South Platte River at the Kersey gage was 833 cfs, as -3- 1 1 I
compared to the 1961-1993 average of 812 cfs. Flow at the -4 1 1 ...I —1 •--......... -- -.
JAN97 JANAB JAN69 JAN90 JAM 1 JAN92 JAN93 JAN94 JAN9S JAN96
Colorado/Nebraska state line averaged 518 cfs. ►ONTW YEAR
Despite generally dry weather conditions in December,
overall water supply conditions continue to be well above
average for both the mainstem and the tributaries.
Administrative/Management Concerns SOUTH PLATTE RIVER NR. KERSEY
Reservoir storage continues as the primary diversion 450 I FLOW BYWATER YEAR
in December with lesser diversions for municipal and recharge 400- .
purposes. The Burlington Ditch storage reservoirs and the 95O
Denver intake call continued on the mainstem of the South z.. I i
Platte River. There was no call downstream of the Denver 300
area. .n
i 250 1 i
By the end of December, most diversions on the W z 200 1 1
mainstem for either recharge or for storage had ceased +.50
because of concerns associated with ditch system freezing and I
,OO 7
because reservoirs had reached their winter storage levels. 1Reservoirs are in good shape to fill during the spring runoff. 50 I I
. iI
i 1 I
Oct Npv °- Jan Pub March
►ONT"
_• wET(',932) . DRY(1964) A AVG x 1996
Representative Reservoirs
South Platto f71VK QICIn
260 , 1
2.10-I \1
220
200 1
m ^.90
•C 1
u n :fi❑
c c
a a 140
An
o_ '20 N 7., •1 On 1 , q 1 \7
.::
1 0,III on Nors, oth EI..on UI I 0 Chaosnen JOCrcon Barr Lakv
i ,vq '2/2' Co nt(lnic �S '2/.1/95 Contents
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