ISFAPPC02397

• Case Number: 00CW0128
• Stream Name: JQS Gulch
• Watershed: Parachute Creek
• Water Division: 5
• Water District: 39
• County: Garfield
• Instream Flow App - Doc Type: Supplemental Data

Table l' Data

Parh Date Il 15()fJc-.U)~ Summer <.'13) Winter (1/3)
BL:-I 7N/l)~ 0.32 O.~ - 0.1 2.l}'1. 0.7

FlL\1 ; Ilur~au (,f L.lnJ \1~n.1~,'m...m III f'r~Lh,t,'J 11"" '>lJhl<k ,,1IhL' ...,ur~,., r~n~~ ..j" \l~nnm{. E.qu~ll"n
'; Crl!~f1;1 n"",'f I11<"t In I<~CI<OSS SU~m~ Tahlc

Hiolo~ic Flow RccornlTlendati\m~
The BL:>'l recommended a 1.7 and OA cfs "ummcr now and ;\ 0.3 cr" winter l10w na:--ed on their
July 9th. 199X. data collection effort and water avallahillty analy:--j". e\\"eH ...tall ha~ rcvie\\"ed
th(' daw collecled hy the HL:-'1. The "LImmer lll'w reCllmmendatiol1. which 111\.'et'- J of J crileria
bUI falL<.. out"id(' the accuracy range of the R2CROSS model. i:-- 2.lJ cf~. C\\"CB ~tarf believe" that
"Ullllllcr llow recommclldation~ that l~lll out....idc nf the accuf<lcy of lhe model atxn.e .25(V;~ of the
mea"ured di"chargc 11M:' overestimate the required ",urnmer 110\,,'. The winter 110\',.
n.'commendation. which meet.....2 of J criteria anJ i~ within the accur..H.:Y of the R2CROSS llloJel.
i" 0.7 cr.....

The BL\l ha" indicated thai Ihi" i~ a \'ery high priority "lream "egml.?lH 10 thclll. However.
hccau"c the "ummer reconullenJation I~db oLlhide of the ;'.h.:curacy range of the R,.2CROSS
IlllHkl. "taff believe" that more data ne('d~ to he collected to acrur.ltdy pn:dlct the "ummer flow
recommendation. In the lllean time. "tall hclie\T" that it \~ould ~ appropriate for the Hoard tn
file on a year-round 110w of 0.7 ct..... the winter 110\\" recomllll'ndation. thu" giving JQS some
water right proll'ction until addilional data can he collccled. Staff has consulted with the
Colorautl Divi~inn of Wildlife and believe.. 0.7 eb \\'ill he sufficient 10 prolcct Iht' nalLlral
environlllent 10 a rea~llnahle degrec until additional data can he collected.

Hydrologic Data

Alier receIving thc cooperating agencie,,' hiologic tlo\\" n:col11lllendatitln. the C\\"CB "taff
conducted an c\'aIUalion of the "tream hydrology (0 determine if waler wa" phy..ically available
for an in~lre;HT1 llow appropriation. Thl' hydrngraph \\a~ dt'fi\'Cd from data colkcteJ by the
USGS "Irearn gage for Ea"t Fork Parachute Crel'k near Am'il Poinh (ID #{)l)()9.:!960l. which ha...
a drainage art'a nf 1....5 "quare milc" ("l'e Gage Summary In Appcndix Cl. The pel"Hld of record
for thi.. gagr.: i" 1976 to 19X3. Ihe period or record u"ed hy "tall in their .I[laly~i" wa... 1976-19SJ.
or sewn yr.:ar.. of record. The e"timated Jrainage arca of JQS Gulch up..trearn of (.olden Ca..tle
Gulch i~ approximately 1.8 "qu<.trc mile". Tanle.2 hcllm Ji"play" thl' c"timatcd tlow or JQS
Gulch al the conl1ut'nce with Golden Ca,lk Gulch. in t(,fIll'- Ill' a percentagc of e\ceedl'ncc. The
hlue "hading highlight" how often Ihe yr.:ar-l"lllllld 111m recomllll.'ndatit)n h.l" heen ;.j\'ailahlc.

Table 2 JQS Gulcll ill conllue<lce w GoIOlo"n CaSlI" GulCh O"9,nal Flow

E.ceeoe~Cf>5 Januil"" feoruar MarCil " " M. June Jur~ A.u"lJ51 S" ,,,mber OCfQ(\<;'r No,emhW DecerT't>er
1", 0" '" 0'" an "",. "''' ". 0.13 03B 03.: 022 0"
S., '" '" 036 50' 2112 819 098 '" 029 on '" 0.12
10", '" "" "" "" 1510 ."" 019 '" "" 019 0"' '"
200,. 009 '" 02" '" 1179 '" '" 029 0" 0"' 0" '"
50'.0 '36 00'1 '" 0>, .., 091 032 01'; I '" '" '" 00'
600, o O~ '00 ,W 02.: 03, on 1)1i' (jot 0""' 009 00' 036
90'. 000 000 009 '" 0"' '" OOJ '''"' OOJ 00; 000 00;
9:'", '00 000 00' '" '" 00' 002 0" OOJ 0""' 005 00'
,~, 0""' '''"' 000 'W 0" 0""' '" '" 002 00.: 000 '"

T<.thh: .:! ..how" th.,t th~ ...UlllmCf and \\'inl('r rc:colllIlll'llt!atitlll of 0.7 cf" \., availahk 5W} or tht:
time for the month" of April though Junt', lOr:- of the timc in July and I r:i of the lime in Augu,,1.
Ba...r:J ()n the an..w(' \\ .tler a\aibhilily analy"i... and Ih(' relluift.'llll'nl of the C\\'CH ..uff to halancr.:
thc 111'l'd" ()f l11<.tnkind with a rca"ofl<.thk pre...ervation l)f Ihe natural cnvironment th('
recommcnded ...ununer and wima I1nw of 0.7 ('f~ \\;.1" reduced further. Slaff recommend" that