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25 <br />PLATTE RIVER BASIN <br /> <br />06710500 BEAR CREEK AT MORRISON, CO <br /> <br />LOCATION.--Lat 39°39'11", long 105°11'44”, in SE¼SW¼ sec. 35, T.4 S., R.70 W., Jefferson County, Hydrologic Unit <br />10190002, on left bank at Morrison, 180 ft upstream from bridge on State Highway 8 and 0.2 mi upstream <br />from Mount Vernon Creek. <br /> <br />DRAINAGE AREA AND PERIOD OF RECORD.--164 mi². Sporadic, incomplete data Sep. 1881 to Feb. 1902. Good data <br />October 1919 to current year. Monthly data for some periods only. Some early years published as near <br />Morrison, at Starbuck, at Idledale. Water quality data from Oct. 1976 to Sep. 1981. <br /> <br />GAGE.--Data Collection Platform (DCP) with phone modem, shaft encoder and a continuous chart recorder in a 60-inch <br />metal shelter over a 48-inch stilling well. Primary reference gage is a metal drop tape within the well <br />referenced to an adjustable RP on the instrument shelf. There is no outside gage. Control is a <br />compound weir and forms gage pool. A bank-operated cableway at the gage is used for high flow <br />measurements. <br /> <br />REMARKS.--Primary record is hourly averages of 15-minute satellite data with chart back-up. Accuracy was <br />maintained by 35 visits to the gage. The record is complete and reliable, except for the following <br />periods: Nov. 22, 2007 – Feb. 25, 2008, when the gage height was ice affected. The record is good, <br />except for periods of ice affected record, which were estimated and are considered poor. Station <br />maintained by Steve Barrett and Patrick Tyler and record developed by Patrick Tyler. <br /> <br />RATING TABLE.-- BCRMORCO23 USED FROM 01-Oct-2007 TO 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 25 24 21 15 17 21 21 43 78 36 17 23 <br /> 2 25 22 22 14 15 23 21 37 79 36 15 20 <br /> 3 24 21 20 17 13 17 25 33 75 39 15 20 <br /> 4 23 23 21 17 10 19 20 35 75 34 16 19 <br /> 5 23 23 22 19 11 17 23 32 95 33 18 18 <br /> 6 22 20 21 20 11 16 24 32 80 35 19 19 <br /> 7 24 20 20 18 14 18 23 33 70 44 18 18 <br /> 8 22 22 19 20 14 17 21 37 72 48 22 17 <br /> 9 23 20 10 18 14 16 22 36 63 39 25 18 <br /> 10 23 24 11 16 15 18 26 38 60 32 24 17 <br /> 11 24 23 18 17 16 16 23 32 58 30 25 17 <br /> 12 23 21 16 18 16 21 21 31 55 27 22 43 <br /> 13 22 21 19 18 17 19 26 53 50 26 19 36 <br /> 14 30 22 17 18 17 20 25 46 46 25 16 27 <br /> 15 34 15 14 17 18 15 29 64 46 24 18 23 <br /> 16 29 20 16 16 18 20 37 56 49 23 56 21 <br /> 17 29 21 16 12 17 21 35 55 49 21 75 20 <br /> 18 25 22 16 14 17 16 32 64 48 23 49 18 <br /> 19 22 20 19 13 16 18 38 76 48 26 37 18 <br /> 20 26 18 20 12 17 22 40 86 48 24 31 20 <br /> 21 27 19 19 9.9 15 22 41 90 46 22 28 21 <br /> 22 23 9.3 17 12 15 22 38 84 44 23 26 19 <br /> 23 28 9.0 16 12 17 19 42 75 43 23 25 17 <br /> 24 28 9.6 16 11 15 20 46 66 44 29 31 16 <br /> 25 26 15 16 13 18 20 46 63 43 27 30 16 <br /> 26 24 18 15 15 18 25 40 73 40 26 27 16 <br /> 27 26 18 13 15 17 29 37 90 37 22 24 15 <br /> 28 24 17 13 17 20 24 35 79 37 21 23 16 <br /> 29 24 16 13 18 20 23 35 78 36 21 22 15 <br /> 30 24 16 17 15 --- 28 36 76 34 22 20 15 <br /> 31 23 --- 18 14 --- 25 --- 77 --- 19 20 --- <br /> <br />TOTAL 775 568.9 531 480.9 458 627 928 1770 1648 880 813 598 <br />MEAN 25.0 19.0 17.1 15.5 15.8 20.2 30.9 57.1 54.9 28.4 26.2 19.9 <br />AC-FT 1540 1130 1050 954 908 1240 1840 3510 3270 1750 1610 1190 <br />MAX 34 24 22 20 20 29 46 90 95 48 75 43 <br />MIN 22 9.0 10 9.9 10 15 20 31 34 19 15 15 <br /> <br />CAL YR 2007 TOTAL 27111.3 MEAN 74.3 MAX 350 MIN 7.4 AC-FT 53780 <br />WTR YR 2008 TOTAL 10077.8 MEAN 27.5 MAX 95 MIN 9 AC-FT 19990 <br /> <br />MAX DISCH: 129 CFS AT 11:00 ON Jun. 5, 2008 GH 6.8 FT. SHIFT 0 FT. <br />MAX GH: 6.8 FT. AT 11:00 ON Jun. 5, 2008 <br /> <br />FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD. <br />