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<br />I 183 <br /> COLORADO RrvER BASIN <br />I 09086470 MAIN ELJt CREEK NBA1\ NEW CASTLE, CO <br />LOCATION,"Lat 390~0'~1", 10nq 10703.'21", Garfield County, Hydroloqic unit 14010005, on riqht bank about 500 ft <br /> upstream from bridqe and 9.5 miles northeast of New Castle. <br />I DRAINAGE AREA. ..91.0 mi2. <br />PERIOD OF RECORD.--October 1990 to current year. <br /> GAGE.--Water-staqe recorder. Elevation of qaqe is 6,120 ft above sea level, from topoqraphic map. <br />I REMARltS.-'Estimated daily discharqesl Dec. 9, Dec. 21 to Jan. 13, Jan. 30. Feb. 3, 13-1~. and Apr. 18 to Kay 12. <br />Records qood except for estimated daily discharqes, which are poor. Several measurements of specific <br />conductance and water temperature were obtained and are published elsewhere in this report. <br /> DISCHARGE. CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1993 TO SEPTEMBER 1994 <br /> DAILY MEAN VALUES <br />I DAY OCT NOV DEe JAN FEB MAR APR MAY .ruN JUL AUG SEP <br />1 17 15 13 8.8 9.0 10 9.9 18 278 39 17 16 <br /> 2 18 14 13 9.0 9.0 11 10 19 256 39 17 17 <br /> 3 17 '14 13 9.0 9.2 11 11 21 222 39 17 17 <br />I 4 17 14 13 9.0 10 11 11 24 199 37 17 17 <br />5 17 14 13 8.8 9.9 12 12 33 177 36 17 16 <br />6 17 13 12 9.0 9.6 11 12 64 159 36 17 15 <br /> 7 19 13 12 8.8 9.3 12 12 120 140 34 16 15 <br /> 8 20 14 12 8.6 9.7 12 12 160 122 31 16 15 <br />I 9 21 14 12 8.8 9.8 11 12 190 109 30 17 15 <br />10 19 14 12 9.0 9.7 11 12 240 102 30 18 16 <br />11 19 15 12 9.0 9.6 11 11 270 93 29 19 16 <br /> 12 19 15 11 9.2 8.9 11 10 330 89 27 18 15 <br /> 13 18 15 11 9.8 9.4 11 10 348 82 26 17 14 <br />I 14 18 15 11 10 9.4 11 11 334 78 26 17 15 <br />15 18 15 11 10 9.8 11 11 359 73 26 17 15 <br />16 18 13 11 10 9.4 11 12 397 67 26 17 15 <br /> 17 18 14 10 10 9.5 11 14 452 63 26 16 15 <br />I 18 18 15 10 10 9.5 11 16 435 60 23 15 14 <br />19 17 13 10 11 9.1 11 20 412 57 21 15 14 <br />20 17 13 10 11 9.2 11 22 390 57 21 15 14 <br /> 21 16 14 9.8 11 10 11 28 352 56 21 15 14 <br /> 22 15 15 9.8 11 9.1 11 34 332 56 20 15 15 <br />I 23 16 14 9.2 11 10 12 38 333 56 20 15 15 <br />24 16 12 9.0 11 9.8 12 37 302 56 20 16 15 <br />25 16 13 8.8 11 9.8 12 34 271 52 20 16 15 <br /> 26 16 13 8.8 11 9.7 11 29 278 50 20 16 15 <br /> 27 15 13 8.8 11 9.0 10 26 257 48 .19 16 15 <br />I 28 15 13 9.0 10 9.2 12 23 -259 45 18 16 14 <br />29 15 13 8.8 9.9 12 21 259 41 17 16 13 <br />30 13 13 8.8 9.2 10 19 270 39 17 16 15 <br />31 16 8.8 9.0 11 279 17 16 <br /> TOTAL 531 415 331.6 303.9 265.6 346 539.9 7808 2982 811 508 452 <br />I MEAN ~/.4 13.8 10.7 9.90 9.49 lL~ 18.0 252 99.4 26.2 16.4 15.1 <br />MAX 21 15 13 11 10 12 38 452 278 39 19 17 <br />HIN 13 12 8.8 8.6 8.9 10 9.9 18 39 17 15 13 <br />AC-FT 1050 823 658 603 527 686 1070 15490 5910 1610 1010 897 <br /> STATISTICS OF KONTHLY MEAN DATA FOR WATER YEARS 1991 1994, BY WATER YEAR (WY) <br />I MEAN 13.0 11.1 9.79 8.97 8.87 10.1 28.8 367 273 57.4 :U.5 17.2 <br />MAX 17.1 13.8 10.9 9.87 10.~ 13.5 55.1 570 626 108 29.1 20.0 <br />(WY) 1994 1994 1992 1992 1993 1993 1992 1993 1993 1993 1993 1993 <br /> KIN 11.2 10.0 8.52 7.05 6.76 6.61 ' 14.4 252 97.6 26.2 16.4 15.1 <br />I (WY) 1993 1993 1991 1991 1991 1991 1991 1994 1992 1994 1994 1994 <br />SUMMARy STATISTICS FOR 1993 CALENDAR YEAR FOR 1994 WATER YEAR WATER YEARS 1991 1994 <br /> ANNUAL TOTAL 44407.2 15294.0 <br /> ANNUAL MEAN 122 41.9 69.2 <br />I HIGHEST ANNUAL MEAN 121 1993 <br />LOWEST ANNUAL MEAN 41.9 1994 <br />HIGHEST DAILY MEAN 1100 Jun 2 452 May 17 1100 Jun 2 1993 <br />LOWEST DAILY MEAN 8.3 Jan 11 8.6 Jan 8 5.8 Jan 23 1991 <br /> ANNUAL SEVEN-DAY MINIMUM 8.7 Jan 1 8.8 Dec 25 6.2 Jan 22 1991 <br /> INSTANTANEOUS PEAX FLOW 474 Kay 17 1230 May 21 1993 <br />I INSTANTANEOUS PEAX STAGE 5.52 May 17 7.26 May 21 1993 <br />INSTANTANEOUS LOW FLOW 5.8 Jan 23 1991 <br />ANNUAL RUNOFF (AC-FT) 88080 30340 50140 <br />10 PERCENT EXCEED'S 548 91 208 <br /> 50 PERCENT EXCEEDS 18 15 14 <br /> 90 PERCENT EXCEEDS 9.4 9.5 8.6 <br />I <br />I <br />I <br />