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31 <br />PLATTE RIVER BASIN <br /> <br />06720000 CLEAR CREEK AT DERBY, CO <br /> <br />LOCATION.--Lat 39°49'42", long 104°57'30", in SW¼SW¼ sec. 36, T.2 S., R.68 W., Adams County, Hydrologic Unit <br />10190004, on right bank 875 ft downstream from York Street bridge, 0.5 mi upstream from mouth, and 2.5 mi <br />west of Derby. <br /> <br />DRAINAGE AREA AND PERIOD OF RECORD.--575 mi²; 1927 to present. <br /> <br />GAGE.--Graphic water-stage recorder with satellite monitoring DCP with digital shaft encoder and Telemark in a <br />60 inch corrugated metal shelter and well. Station at this datum since June 26, 1992. Primary reference <br />is by electric drop tape. <br /> <br />REMARKS.--The primary record is hourly satellite data and mean daily gage heights from the chart. Daily maximum <br />and minimum stages for the satellite record checked to within ± 0.02 with the chart. Where DCP data was <br />missing, data was entered hourly from the chart. The chart recorder clock stopped a several times during <br />the season, but the satellite data was complete so no data was lost during these times. Ice is presumed <br />to have been present December 24-25, 2004 and January 6-9, 2005. The record is good, except for the <br />following days estimated for ice-affect: January 6-7, 2005 are considered poor; and December 24-25, 2004 <br />and January 8-9, 2005 are considered fair. Station maintained and record developed by Steve Barrett. <br /> <br />RATING TABLE.--CLEDERCO34 USED FROM 01-OCT-2004 TO 30-SEP-2005 <br /> <br /> DISCHARGE, IN CFS, WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005 <br /> MEAN VALUES <br /> <br /> DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP <br /> <br /> 1 65 104 31 61 35 20 11 72 213 339 10 4.5 <br /> 2 34 66 28 52 29 24 9.7 64 357 366 6.9 4.6 <br /> 3 24 34 28 33 29 25 6.6 74 447 400 76 4.4 <br /> 4 25 33 33 27 27 26 6.9 45 724 354 431 4.7 <br /> 5 28 33 29 27 25 26 9 35 499 263 113 3.5 <br /> 6 240 32 30 25 24 25 21 29 433 231 31 8.4 <br /> 7 87 30 27 27 27 26 11 43 392 215 9.1 4.9 <br /> 8 38 31 27 28 29 27 14 52 383 216 8.7 4.4 <br /> 9 35 34 28 27 25 27 17 43 397 234 9.2 4.3 <br /> 10 28 58 29 25 25 28 98 34 668 235 12 5.6 <br /> 11 22 52 29 25 28 27 206 139 509 209 26 5 <br /> 12 23 35 27 34 29 25 101 136 527 161 20 4.2 <br /> 13 148 34 27 26 25 56 73 102 414 137 10 4.5 <br /> 14 52 32 27 26 23 27 46 166 327 122 17 17 <br /> 15 31 36 28 24 28 25 38 119 300 99 11 17 <br /> 16 39 32 30 27 27 25 21 50 325 91 7 12 <br /> 17 33 29 28 26 24 23 15 57 396 66 7 7.2 <br /> 18 31 29 27 25 24 20 17 67 460 69 6.4 4.3 <br /> 19 30 29 26 25 28 20 22 37 503 60 6.5 3.9 <br /> 20 30 40 27 25 23 18 87 112 618 48 18 3.9 <br /> 21 28 35 27 24 21 25 73 273 639 37 29 4.2 <br /> 22 24 31 28 23 21 8.2 26 409 643 30 18 4.7 <br /> 23 22 30 27 23 21 15 15 517 655 22 7.9 5.3 <br /> 24 21 29 28 26 21 29 46 536 645 34 6.4 5 <br /> 25 22 27 30 25 20 21 212 523 692 80 5.1 4.3 <br /> 26 21 24 37 25 21 12 88 524 617 159 5 4.3 <br /> 27 21 23 37 25 19 14 60 477 543 64 5.3 4.7 <br /> 28 19 27 40 29 18 13 110 414 474 8.7 4.5 46 <br /> 29 21 31 33 24 --- 13 72 394 447 7 4.2 102 <br /> 30 27 36 52 41 --- 13 71 506 375 15 4.4 57 <br /> 31 30 --- 63 61 --- 19 --- 347 --- 11 4.4 --- <br /> <br />TOTAL 1299 1096 968 921 696 702.2 1603.2 6396 14622 4382.7 930 365.8 <br />MEAN 42 37 31 30 25 22.7 53.4 206 487 141 30 12.2 <br />AC-FT 2580 2170 1920 1830 1380 1390 3180 12690 29000 8690 1840 726 <br />MAX 240 104 63 61 35 56 212 536 724 400 431 102 <br />MIN 19 23 26 23 18 8.2 6.6 29 213 7 4.2 3.5 <br /> <br />WTR YR 2005 TOTAL 33981.9 MEAN 93.1 MAX 724 MIN 3.5 AC-FT 67400 <br /> <br />MAX DISCH: 1280 CFS AT 13:30 ON Jun. 4, 2005 GH 3.12 FT. SHIFT 0.02 FT. <br />MAX GH: 3.12 FT. AT 13:30 ON Jun. 4, 2005 <br /> <br /> <br /> <br />