WSP11422

• File Number: 8443.600
• Description: Narrows Unit - Studies
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 1/1/1967
• Author: BoR
• Title: Summary of the Report on the Narrows Unit, Colorado
• Water Supply Pro - Doc Type: Report/Study

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<. '.\~rc ;J.~$crn )led in t\VQ t;;blcs of over 70 coh..:rnns ctch, with v,)hc~ for

, ('<tch month ot the- 20-yc.tr pcri:Jd. 1'131-1950. All ol these tables are on file in the office of the Iht_

cau o! Irrigation, Watc.r Puwcr and Drainage. Dt~partr:J.ent of Roads a!ld Irrigati.on. Lincoln. Nebr:l.lika.

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In the following p;lges these data ,'lnd compllttl.tion:s have been further summ;nizcd ,-..nd

conde(lscd in t":o lO-column t.'lblcs. Table I gives the "Complltcd Di5charg~ of 'Pbttc River at OVCl'_

ton Assuming 1951 Power <J!1d Irrig.,tion Dc\'doprnent in Full .Effect Since 1931. Table 2 gives the

"Colflputed Discharge of Pbtte River at O\'crton assuming probable :future Increase in Puwer and

Irrigation Development in Full Effect Since 1931.

A' /I'~ COM()TrE ON WAn~ L::;S~/- P; . Are.

r!-~~.::.?t~7f:L'._ ~~~4~';.___Cha irman rC~--::.-._LLe:;;fl'l_-=,_. Engineer
Chief, Uurbau cof IrrJ/li.tion. Lower Platte River A..'-i!"a--
Wdter Power ,'\nd Dr-,linage U. S. BureaU of Reclanntion
NelH'a.skil. DcparLllcnt of ROil.ds
ai1d Irrigatioil"

_~:~~d_9;!'P!.:::-r-5__ :~;I~~~r
Nebr;\3!-:a Mid-State --cf--'"~'"
Rcclam,lti"n District

~ l~ir 'f I"
e...,; JtP, rrIgatlOn
_. Jl..Lt'-~__ 'L./~c..0::c::...._","__ Engineer
Pl;a.tt~ Vallt:y -Public Power and
Irdga.tion District

___ ~~~~,__.___ ~~~~;I~:~~~
The Central Nebra"ka Public
Power and I:rrigation __
/7 /7J~~
C: (" :I,i;?
____~~.::::____=.__ _.~:.;;:~~ Director
.Conservation and Sur'/cy Divi9ion
University of Nebra.ska

EXPLANATION OF COLUMN HEADINGS
TABLE I - PRESENT CONDITIONS

The following explanation of the several columns will be helpful to those using the table.
All figures arc in thousand acrc..:.feet. The Platte VaHey Public Power and Irrigation District win
ht~reinafter be desig:mtted <'.s the Pla.tte District, and the Central Nebraska Public Power and Irrigaw
tion District will hereinafter be design::-l.ted as the C<:ntral District.

Col. 1 w W!\ter Y(;'ar:
:From Oct. 1 of previous year to Sept. 30 of given year.

Col. .2 - Month.

Col. 3 - Cornl,ut~d Inflow to Lake McConaughy (Kingsley Reservoir):
Inflow according to 9J3 Study of Glr.(ldo Project, U. $< BUreau of Rt":darnation.

Col. .3:1 - Obser....ed Illflow:
Discharr,:-c of Nol"th Platte River at Martin, Nebraska. Observed discharge at Martin 1934
to 1938. Balance cotima.te.d f1'0111. obS(,l'ved discharge at nearby stations of OshkQsh or
Lewellen.

Col. 4 ~ Cr)Jl1puh'd Outflow:
Computed outflow from Kingsley Reservoir under conditions :;;ir.,ulating actual .l?resellt op.
erath')1).

Col. 5 - Computed Storage in Reser.:oil' at. End of Month;
Storage at end of prc....i0lls nr.onth, plus COIni)1J.tcd inflow, less C0Jl.lputed outflow, 110'85 corn-
puted ,;:vaporatiQIi ilnd scep;.;.ge loss. E':aporatioll and oecp<l.gc losses varied frorn m'H~th to
month ~nd year to year with the ';';~Ilthel' and the st<lgc of the r;::s.Cl.voir. The average loss
Via,,; estimated ..t substantL..lly 100,000 <,-ere-feet a year.

Col. 6 ~ Diversions at Keystone:
Divcrsi'')}IS by the Platte Distdct within can",.! eal)acity of a.11 North Pla.tt..:: River water over
and aLove KeYf,t(;h<~ to h'orth Platte requirements.

Col. 7 . Divcl'"siops ~t Korty:
Diversions by Platte Dbtrict fn.'jU South Platte Ri'-/"cl' t.:p to c~tl)al c"pacity.

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