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GUNMSON RIVER BASIN <br /> 09132500 NORTH FORK GUNNISON RP/F;R NEAR SOMERSET, CO <br />' LOCATION.--Lot 38°55'33" , long 107°26'01", in SE'laSW ~/a sec. 10, T.13 S., R.90 W., Gunnison County, Hyd rologic <br /> Unit 14020004, on left bank 2.3 mi east of Somerset and 4.8 mi upstream from Hubbazd Creek. <br /> DRAINAGE AREA.--526 m il. <br /> PERIOD OF RECORD.--Oc tober 1933 to current year. Monthly discharge only for same periods, published in WSP 1 313. <br /> Water-quality data available, October 1977 to September 1982. Sediment data available, Novem ber 1978 to Septem ber 1982. <br /> REVISED RECORDS.--WS P 2124: Drainage area. WDR CO-77 -2: 1976. <br /> GAGE.--Satellite data-collectioD platform. Elevation of gage is 6, 280 0 above sea level, from topographic map . Prior t o Oct. I, <br /> 1982, at various sites 0.8 mi downstream, al different datums. See WDR CO-81-2, for history of changes. <br /> REMARKS.--Records good except for estimated daily discharges, which are poor. Natural Ilow of stream affe cted 6y small <br /> diversions (or irrigation i n nearby drainage areas, irrigation of about 3,000 acres upstream from station, storage in Overloud <br /> Reservoir, capacity, 6,280 acre-R, and storage in Paonia Reservoir, capacity, 18,300 acre-fi, sin ce February 1962. Several <br /> measurements of specific conductance and water temperature were obtained and are published elsewhere in this report. <br /> DISCFURGE, CUBIC FEET PER SECOND, WATER YEAR Ol-TOBER 1995 TO SEPTEMBER 1996 <br /> DARY MEAN VALOES <br /> DAY OCT NOV DEC JAN EEB MAR APR MAY JVN JUL AUC SEP <br /> 1 e161 157 120 e60 c66 200 566 1700 989 e540 243 226 <br /> 2 e150 162 121 e56 e70 19B 698 1520 1100 476 241 226 <br /> 3 e151 165 110 e56 e6d 199 798 1660 1290 432 2QB 228 <br /> d e151 160 119 e62 e]0 2111 756 1580 1430 416 250 229 <br /> 5 e14B 159 101 e60 e]d 201 776 1910 1560 405 266 230 <br /> 6 e160 160 80 ¢58 e]2 201 B21 2170 1660 381 247 235 <br /> 7 140 15] 75 e59 e72 198 913 2280 15]0 360 257 230 <br /> 8 140 159 7d e60 e72 200 1110 2340 1510 3J5 256 220 <br /> 9 ld2 161 75 e59 eB4 199 1560 2570 144n ll] 259 222 <br /> 10 ldd 161 65 e58 e96 198 1]10 2410 1660 299 259 226 <br /> 11 126 ld6 71 e56 e94 207 2010 2280 1390 2]b 258 226 <br /> 12 140 157 77 e54 e90 231 1760 2690 1290 254 255 227 <br /> 13 170 157 70 e54 e100 287 1620 2680 1220 237 252 2J3 <br /> 14 167 157 69 e56 122 323 1240 2]70 1150 222 25B 273 <br /> 15 159 157 47 e5B 121 319 456 2710 1190 238 25] 233 <br /> 16 154 157 e54 e60 126 31B 659 2800 1060 233 25B 226 <br /> 17 153 157 e50 e58 125 31] 655 3140 993 243 255 161 <br />• 1B 150 151 e48 e56 125 354 855 2930 938 246 256 lOl <br /> 19 150 145 ¢4] e60 125 393 857 2830 871 247 256 107 <br /> 2D 147 146 e48 e60 132 393 773 2660 830 222 255 107 <br /> 21 166 146 e52 e5B 221 404 ]3B 2100 975 226 257 104 <br /> 22 144 146 ¢47 e62 292 655 ]11 2020 989 230 250 104 <br /> 2J 142 144 e6d e62 217 501 641 1940 B56 2J5 245 115 <br /> 26 110 139 ed3 e62 175 6B6 802 1680 ]2d 261 250 112 <br /> 25 B6 13B e49 e60 363 447 1J60 ]600 657 268 263 109 <br /> 26 B6 136 e52 e60 152 416 1590 1390 606 250 246 105 <br /> P B6 126 e52 e62 181 611 1690 1120 e600 248 2J8 103 <br /> 2B 86 116 e54 e6B 207 412 1790 1030 e590 267 226 103 <br /> 29 120 128 e58 e70 206 383 1600 933 e5]0 251 229 102 <br /> JO 156 119 e58 e6B --~ 351 1580 885 e560 250 22B 99 <br /> 31 150 ~- e62 e66 ~~~ 394 --- BB6 ~~ 267 226 --- <br /> 'TOTAL 4290 6663 2100 1856 1712 9]95 32851 62562 32006 9060 7700 5183 <br /> MEAN 13B 168 67.7 59.9 128 316 1095 2017 1067 292 248 173 <br /> MA% 170 162 121 70 292 501 2010 3140 1640 540 259 235 <br /> MIN B6 116 63 Sd 64 198 656 984 560 222 226 99 <br /> AC -FT 8510 BB10 4170 3680 7360 19430 65160 124100 63480 17970 1 52]0 10200 <br /> STATISTICS OF HOMIHLY MEAN DATA EVR WATER YEARS 1934 - 1996, BY WATER YEAR (Wy) <br /> MEAN 117 92.7 76.2 64.8 70.1 149 72b 1932 1996 459 198 150 <br /> MA% 466 JIB 271 166 180 721 1736 3993 4095 1836 438 319 <br /> IWYI 1987 198] 1966 1966 1986 1986 1986 1984 195] 1995 1957 1996 <br /> MIN 47.9 35.2 33.1 29.6 30.4 60.2 166 314 1]9 66.6 68.1 d].6 <br /> IWY) 195] 1990 1978 1990 1978 1966 19]7 197] 1934 1934 1977 1936 <br /> SUMIARY STATISTICS POR 1995 CALENDAR YEAR Iron 1996 WATER YEAR WATER YEARS 1934 - 1996 <br /> ANNUAL TdCAL 299223 175538 <br /> ANNUAL MEAM 820 OBO 462 <br /> HIGHEST ANNUAL MEAN 839 1984 <br /> LOWEST Ai1NVAL I1EAN 116 1977 <br /> HIGHEST DAILY MEAN 4600 Jun 5 3140 May 17 7080 May 24 1986 <br /> LOWEST DAILY MEAN 35 Jan 1 43 Dec 24 1] Nov 10 1950 <br /> ANNUAL SEVEN-DAY MINIMUM d7 Dec 10 97 Dec 19 25 Feb 17 19]B <br /> INSTANTANEOUS PEAF: FUJW 3230 May 17 9220 May 24 1984 <br /> INSTANTANEOUS PEA% STAGE 5.21 May 1] °8.20 May 24 1984 <br /> ANNUAL RUNOFF IAC~FT) 593500 34fl200 134800 <br /> 10 PERCENT EXCEEDS 2810 1510 1520 <br /> 50 PERCENT E%C EEDS 293 226 1J2 <br /> 90 PERCEtrC EXCEEDS 55 60 52 <br />. e-Ee timated <br /> a-From uterde high~wa ter mark. <br />223 <br />