PROJ00079

• Contract/PO #: FS0012X
• Contractor Name: New Castle, Town of
• Contract Type: Loan
• Water District: 0
• County: Garfield
• Loan Projects - Doc Type: Feasibility Study

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TOWN OF NEW CASTLE
WATER RIGHTS WORKSHEET

(EQUATING FLOW TO EaR'S)

NOTE: BASED UPON THE RESOURCE ENGINEERING REPORT OF JULY 25,1995,
THIS CALCULATION WILL DEFINE THE NUMBER OF EaR'S THAT THE TOWN
CAN SUPPORT (WITH OUT CASTLE VALLEY RANCH WATER RIGHTS).

E'BASED~M!iE'RESOURCCREPOlW,I~ 'N'ADRYYEARllAS ONLY]
to.9_C~AVMABlE.rOfLTQ.PlVERtJo~. ..;. .....:... -

DETERMINE THE NUMBER OF UNITS THAT THE TOWN CAN SUPPORT BASEOUPON ACERTAlN eFS

EQUATE FLOW RATE (eFS) TO GAllONS PER MINUTE (GPM)
(USE 60 SEClMIN . 7.48 GAlllCF FACTOR)

09 CFS
403 92 GPM

eQUATE GPM FLOW TO GAllONS PER DAY (GPO)
(USE 60 MINIHR"24 HRIOAY FACTOR)

403.92 GPM =

5816<<6 GPO

FACTOR PEAK DAY SUMMER flOW INTO AVERAGE DAY SUMMER FLOW
(DIVIDE PEAK BY A FACTOR OF 1.5)

AVERAGE DAY SUMMER FLOW:

3en63 2 GPO

EQUATE AVERAGE DAY SUMMER FlOW TO eaR'S (EQUIVALENT FLOW UNITS):
(THIS ASSUMES AN EaR IS 523 GPo..VERIFIED BY COMPUTATIONS LATER)

NUMBER OF EQR"S SUPPORTED BY R.OW-

Uf.421 UNITS

IN A DROUGHT YEAR, NEW CASTlE CAN ONLY DIVERT 0.9 eFS OF ITS 267 eFS. GIVEN THIS SCENARIO,
AS SHOWN ABOVE, NEW CASTLE CAN SUPPORT 74142 EQR'S.

CURRENn.y;tUNOERnfE'TAPS'COMM~H.A.S"'A RESERVEOF'171"EOR"S BEFORt:
THE TOWNWOUlO HAVE:TO RelY UPON THE CASTl.E VALlEY RANCH WATER RIGKTS TO
SUPPUMEm-trS OWN.;HbwE\1ER."THEWATER RIGHTS BEj~m TRANSFERRED TO THE-TOWN

r~o~i~~~~~&~:~lt.~~~~~~i~~;J~t\~o~~~~~;iErt

SERVICE REQUlREMEtlTS EXCEEDED 171 EaR'S, THE .TowN WOUlD BE OUT OF PHYSiCAl WATER
SUPPLY ANQWOULD NEED TO BE PURcHAsiNG MORE WATER RIGHTS AND LOOKmG FOR ALTERNATIVE
$OURCES OEWATER.sUP"p':lY _