PROJ00090

• Contract/PO #: FS0015X
• Contractor Name: Powderhorn Metropolitan District No. 1 and No. 2
• Contract Type: Loan
• Water District: 0
• County: Mesa
• Loan Projects - Doc Type: Feasibility Study

, J~ 10 '97 03:13PM (ALOIA & HOUPT, P.C.

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P.3

Mr. Jeff Houpt, Esq.
Page 2

January 10, '997

ROBBINS RESERVOIR OPERATION SCHEDULE

MONTH " OOMESilC S/'lOWMAKING IRRIGATION AUI3M~NT PLACED END OF
CEPL.ETIONS DEPLetiONS Oepl.EilONS RELEASES IN MONTH
STOAAGE STORAGE
(1 ) (2) (3) (4\ (5) (6)
JANUARY 2.21 5.00 0.00 7021 0.00 13.50
FE8RUA~V '.95 i,OO 0000 6.95 0.00 6.55
MARCH 2.2' "".34- 0.00 6.55 0.00 0.00
APRIL 0.00 0.00 0.00 0.00 50.00 50.00
MAY 0.0'0 0.00 0,00 0.00 0.00 50.00
JUNe 1.93 0.00 5.00 12.93 0.00 31.07. -
JUI.V 8.32 0.00 5.49 13.81 0.00 23.26
A.UaUST 7.54 0.00 5.00 12.54 0.00 10.72
SEPTEMBER 5.72 0.00 5.00 10.72. 0.00 0.00
OCTOBER 0.00 0.00 0.00 0.00 ~O.OO 50.00
NOVEMBER' 2.08 15.00 . 0.00 17.08 0.00 32.92
O(::aMSE.R 2.21 10.00 0.00 12.2.1 0.00 20.71
TOTAL 40.17 39.34 20.49 100.00 100.00 NA

(1 I
(2)
(3)
(4)

For 1.300 EQR using Table 1. AIJgmentat;on Plan 8eCW01~.
~imated demand (actual snowrnalc;l1g derncnd will depend upon pattern and amount Of nat>Jral snowtalll.
Estimated irrig~tion demand 10r uses other than those included in B6CW015.
Ro!:lb[n$ Resl!II'Voir releases to replace out.of.~riorit'{ depr~ticns,

. The reservoir could also be operated in a manner which develops an even gieater yield
~hali 100 AF. The first fill (Aprifl and the irrigation season releases would ti!!lKe place
as described above for a yield of 60 AF. A second fill would then occur in October,
also as shown but, under this new scenario the 50 AF would be released to replace a
large early winter snowmal<ing demand In November thus depleting the reservoir. A
third fill could then take place during a period of non-snowmaking. Some by-pass of
Big Beaver Creek flow would occur during this period to satisfy downstream users
(stockwater) but surplus flows could be stored. ThIs third fill would then be released
to replace later snowmakin9 depletions.

Thi$ $equence could De repeated several times during a wimer Season with the total
yield of Robbins Reservoir reaching 150 to 200 AF.

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