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47 <br />PLATTE RIVER BASIN <br /> <br />06727000 BOULDER CREEK NEAR ORODELL, CO <br /> <br />LOCATION.--Lat 40°00'23", long 105°19'50", in NE¼SW¼ sec. 34, T.l N., R.71 W., Boulder County, Hydrologic Unit <br />10190005, on left bank along State Highway 119, 0.7 mi southwest of old Orodell, 1.1 mi upstream from <br />Fourmile Creek, and 2.9 mi southwest of the Boulder County Courthouse. <br /> <br />DRAINAGE AREA AND PERIOD OF RECORD.--102 mi²; Oct. 1906 to present. <br /> <br />GAGE.--Data Collection Platform (DCP), shaft encoder and a continuous chart recorder in a 6-ft by 6-ft exposed <br />aggregate concrete shelter with a 54-inch corrugated metal well. The primary reference is an electric <br />tape gage. There is an outside staff gage across the stream placed approximately 1 foot lower than gage <br />datum. The station includes a pressure transducer installed by Urban Drainage and Flood Control <br />District. <br /> <br />REMARKS.--Primary record is hourly averages of 15-minute satellite data with graphic chart as backup. Record is <br />complete and reliable, except for November 22-30, December 1-3, 12–17, 2007, when the stage-discharge <br />relationship was affected by ice; and, Dec 18-30, 2007, when the station was shut down due to ice. <br />Record is good, except for periods of no gage height and ice affected record, which are poor. Station <br />maintained by Division I Hydrographic Staff and record developed Lee Cunning. <br /> <br />RATING TABLE.--BOCOROCO14 USED FROM 01-Oct-2007 30-Sep-2008 <br /> <br /> DISCHARGE, IN CFS, WATER YEAR OCTOBER 2007 TO SEPTEMBER 2008 <br /> MEAN VALUES <br /> <br /> DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP <br /> <br /> 1 27 25 20 15 16 17 18 48 258 332 82 45 <br /> 2 29 25 20 17 16 18 19 44 276 303 73 46 <br /> 3 32 24 20 18 15 16 19 44 306 299 74 38 <br /> 4 27 24 21 17 15 15 19 47 255 330 84 39 <br /> 5 25 24 20 18 15 15 19 46 250 316 90 37 <br /> 6 24 24 20 16 14 14 19 44 216 326 88 38 <br /> 7 25 22 21 15 14 14 19 53 195 319 103 35 <br /> 8 32 19 19 15 14 14 19 59 194 284 118 38 <br /> 9 27 17 16 15 14 14 19 58 176 236 111 31 <br /> 10 28 16 21 15 14 15 20 59 177 207 118 28 <br /> 11 26 16 22 15 15 15 19 58 185 199 118 29 <br /> 12 24 16 25 15 17 15 18 57 176 189 111 51 <br /> 13 24 18 20 15 18 15 19 65 172 189 88 48 <br /> 14 28 19 20 15 15 15 21 64 169 170 75 42 <br /> 15 28 18 15 15 15 15 26 70 187 146 82 41 <br /> 16 30 17 20 14 15 15 30 69 195 149 90 38 <br /> 17 29 16 20 14 16 13 28 67 188 139 84 34 <br /> 18 30 16 20 14 16 13 26 69 186 145 71 37 <br /> 19 25 16 20 14 16 17 28 94 183 130 68 41 <br /> 20 22 16 20 14 20 15 31 176 188 127 72 43 <br /> 21 21 17 20 14 22 14 35 228 189 125 65 46 <br /> 22 21 10 20 14 18 14 34 256 192 122 55 42 <br /> 23 22 15 20 14 15 14 37 223 213 125 52 38 <br /> 24 20 10 20 14 15 15 45 162 227 144 59 36 <br /> 25 23 15 20 14 15 18 48 136 203 133 61 35 <br /> 26 22 20 20 14 16 18 37 148 194 123 64 34 <br /> 27 21 20 20 14 16 21 35 172 192 108 58 32 <br /> 28 21 20 20 15 17 19 38 193 191 98 56 31 <br /> 29 24 20 15 14 17 19 36 253 252 105 44 30 <br /> 30 26 20 20 14 --- 20 40 273 351 90 44 30 <br /> 31 25 --- 15 15 --- 19 --- 268 --- 81 43 --- <br /> <br />TOTAL 788 555 610 462 461 491 821 3603 6336 5789 2401 1133 <br />MEAN 25.4 18.5 19.7 14.9 15.9 15.8 27.4 116 211 187 77.5 37.8 <br />AC-FT 1560 1100 1210 916 914 974 1630 7150 12570 11480 4760 2250 <br />MAX 32 25 25 18 22 21 48 273 351 332 118 51 <br />MIN 20 10 15 14 14 13 18 44 169 81 43 28 <br /> <br />CAL YR 2007 TOTAL 24897 MEAN 68.2 MAX 364 MIN 15 AC-FT 49380 <br />WTR YR 2008 TOTAL 23450 MEAN 64.1 MAX 351 MIN 10 AC-FT 46510 <br /> <br />MAX DISCH: 393 CFS AT 03:45 ON Jun. 30, 2008 GH 3.11 FT. SHIFT -0.01 FT. <br />MAX GH: 3.11 FT. AT 03:45 ON Jun. 30, 2008 <br /> <br />FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD. <br /> <br />