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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I 180 COLORADO RIVER BASIN
09086970 EAST ELK CREEK ABOVE BOILER CREEK, NEAR NEW CASTLE, CO
LOCATION.--Lat 39040'05., lono 107031'28-, Garfield County, Hydrolooic Unit 14010005, on left bank 45 ft downstream
I from Forest Servi~e footbridge and 6 miles northeast of New Castle.
DRAINAGE AREA.--23.4 mi2.
PERIOD OF RECORD.--October 1990 to current year.
I GAGE.--Water-stage recorder. Elevation of gaoe is 6,800.0 ft above National Geodetic Vertical Datum of 1929, from
topographic map.
REMARKS.--Estimated daily discharoes: Oct. 1-10. Records good except for estimated daily discharoes, which are
poor. Several measurements of specific conductance and water temperature were obtained and are publ1 shed
I elsewhere in this report.
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1991 TO SEPTEMBER 1992
DAILY KEAN VALUES
DAY OCT NOV DEe JAN FEB MAR APR KAY JUN JUL AUG SEP
I 1 10 5.8 5.2 5.3 4.8 4.4 6.2 97 129 25 12/ 8.8
2 9.0 4.9 6.2 5.3 4.8 4.8 6.1 96 117 24 12 9.8
3 9.0 4.1 6.2 5.3 4.8 5.4 6.4 97 114 23 11 8.8
4 9.0 5.5 6.2 5.3 4.8 5.7 7.9 106 109 22 11 8.8
5 8.0 5.1 5.9 5.3 4.9 5.5 8.6 115 110 22 11 9.7
I 6 8.0 4.8 5.7 5.3 4.9 5.4 10 124 109 20 11 8.5
7 8.0 5.3 5.7 5.3 5.0 5.7 11 134 102 20 10 8.2
8 8.0 4.8 5.7 5.3 4.8 5.7 10 126' 96 22 10 8.2
9 8.0 4.8 5.7 5.3 4.8 5.7 13 125 88 22 11 8.2
10 7.0 4.8 5.4 5.5 4.8 5.3 17 125 83 20 10 8.5
I 11 6.7 5.3 5.3 5.7 4.8 5.7 20 126 83 19 9.6 8.8
12 6.7 4.7 5.3 5.7 4.8 5.7 26 119 80 20 9.4 8.8
13 6.7 5.0 5.7 5.3 4.8 5.8 27 132 73 23 9.2 8.8
14 7.0 5.2 5.4 5.3 4.7 6.6 30 156 70 19 8.8 8.2
15 7.8 6.1 5.3 5.3 4.4 6.4 29 150 62 18 8.8 8.2
I 16 7.2 5.5 5.3 5.3 4.4 6.5 26 160 57 17 9.1 8.5
17 6.9 5.2 5.3 5.1 4.4 6.2 23 162 52 16 10 9.2
18 7.3 5.0 5.3 4.9 4.4 5.7 24 181 46 17 9.2 9.0
19 6.7 5.1 5.3 4.8 4.4 5.4 21 188 41 15. 8.7 8.8
20 6.7 4.6 5.3 4.8 4.8 5.7 17 210 39 15 8.2 10
I 21 6.7 6.5 5.3 4.8 4.8 4.8 17 236 39 15 8.2 10
22 6.7 5.0 5.3 4.8 4.8 4.8 16 225 38 15 8.2 9.0 .'
23 7.4 4.3 5.3 4.8 4.8 4.8 14 209 37 14 9.8 8.8 I
l!4 7.9 5.9 5.3 4.8 4.6 . 4.4 14 187 35 14 9.4 8.2 ..
I 25 7.0 6.7 5.3 4.8 4.6 4.4 16 192 32 16 8.7 8.2
26 6.3 6.7 5.3 4.8 4.4 5.0 19 209 33 15 9.3 8.5 "
27 6.2 6.7 5.6 4.8 4.4 5.2 27 209 31 14 9.3 8.8
28 6.0 6.5 5.4 4.8 4.4 5.7 43 196 28 13 9.0 8.8 I
29 4.2 6.7 5.3 4.8 4.4 5.5 60 174 27 12 8.7 8.8
I 30 5.8 6.0 5.3 4.8 5.6 83 166 26 12 8.2 8.8 .'~
31 3.6 5.3 4.8 6.0 143 12 8.2
TOTAL 221. 5 162.6 170.1 158.2 135.5 169.5 648.2 4875 1986 551 297.0 263.7
MEAN 7.15 5.42 5.49 5.10 4.67 5.47 21.6 157 66.2 17 .8 9.58 8.79 I
MAX 10 6.7 6.2' 5.7 5.0 6.6 83 236 129 25 12 10
I KIN 3.6 4.1 5.2 4.8 4.4 4.4 6.1 96 26 12 8.2 8.2
AC-FT 439 323 337 314 269 336 1290 9670 3940 1090 589 523
STATISTICS OF KONTHLY MEAN DATA FOR WATER YEARS 1990 - 1992, BY WATER YEAR (WYI
KEAN 6.52 5.34 5.05 4.76 4.40 5.02 15.6 133 155 25.9 13.2 11.3
I MAX 7.15 5.42 5.49 5.10 4.67 5.47 21.6 157 244 34.1 16.9 13.7
(WYI 1992 1992 1992 1992 1992 1992 1992 1992 1991 1991 1991 1991
KIN 5.89 5.26 4.61 4.42 4.11 4.58 9.62 109 66.2 17 .8 9.58 8.79
(WYI 1991 1991 1991 1991 1991 1991 1991 1991 1992 1992 1992 1992
I SUMMARY STATISTICS FOR 1991 CALENDAR YEAR FOR 1992 WATER YEAR WATER YEARS 1990 - 1992
ANNUAL TOTAL 13935.1 9li38.3
ANNUAL MEAN 38.2 26.3 32.2
HIGHEST ANNUAL KEAN 38.0 1991
LOWEST ANNUAL MEAN 26.3 1992
I HIGHEST DAILY MEAN 437 Jun 9 236 .Kay 21 437 Jun 9 1991
LOWEST DAILY MEAN 3.6 Oct 31 3.6 Oct 31 3.6 Oct 31 1991
ANNUAL SEVEN-DAY MINIMUM .4.0 Feb 19 4.5 Feb 24 4.0 Feb 19 1991
INSTANTANEOUS PEAK FLOW 246 Kay 20 527 Jun 8 1991
INSTANTANEOUS PEAK STAGE 4.76 Kay 20 5.21 Jun 8 1991
ANNUAL RUNOFF (AC-FTI 27640 19120 23290
I 10 PERCENT EXCEEDS 127 97 102
SO PERCENT EXCEEDS 8.0 8.1 8.0
90 PERCENT EXCEEDS 4.2 4.8 4.4
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