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<br /> <br />PLATTE RIVER BASIN <br /> <br />06744000 BIG THOMPSON RIVER AT MOUTH NEAR LA SALLE, CO <br /> <br />LOCATION.--Lat 40°21'00", long 104°47'04". <br /> <br />DRAINAGE AREA AND PERIOD OF RECORD.--828 mi²; 1951 to present. <br /> <br />GAGE.--8210 data collection platform and a graphic recorder in wooden shelter with galvanized well section. <br />The drop tape is the primary reference with a supplemental outside chain gage. <br /> <br />REMARKS.--The primary record is hourly data taken from satellite monitoring with chart back up. Daily <br />maximum and minimum stages for the satellite record did agree within +/- 0.02 of the chart. The <br />record is complete. The record is reliable except for the following periods: December 20; 23-27, <br />2002; January 10-13, 16, 18-19, 23-24; February 24-26; March 17-18, 20-21, 2003—stage-discharge <br />relationship was affected by ice on the control; March 19, 2003—inlets were froze; June 8, 2003—both <br />recorder and DCP off. The record is good except for the following days which are estimated and <br />poor: December 20; 23-27; January 10-13, 16, 18-19, 23-24; February 24-26; March 17-21; June 8. <br />Station maintained and record developed by Shera Sumerford. <br /> <br />RATING TABLE.--BIGLASCO25 USED FROM 01-OCT-2002 TO 30-SEP-2003 <br /> <br /> DISCHARGE, IN CFS, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 <br /> MEAN VALUES <br /> <br /> DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP <br /> <br /> 1 34 42 39 35 35 33 98 45 91 49 37 85 <br /> 2 38 47 40 35 36 34 96 43 78 51 48 67 <br /> 3 46 53 39 35 37 35 101 40 75 49 58 48 <br /> 4 49 51 40 36 35 34 107 37 89 48 56 40 <br /> 5 44 50 41 37 35 33 101 33 101 41 47 42 <br /> 6 39 47 40 36 34 34 99 28 102 41 42 48 <br /> 7 38 45 39 37 33 33 97 27 92 43 44 45 <br /> 8 36 45 39 37 35 33 84 25 89 42 44 42 <br /> 9 32 43 39 35 36 33 66 28 78 42 42 43 <br /> 10 34 44 36 36 36 33 53 113 70 37 46 41 <br /> 11 34 47 36 36 35 34 52 141 70 37 46 41 <br /> 12 33 47 38 36 34 32 59 76 68 40 41 43 <br /> 13 39 44 36 36 35 32 68 62 53 39 42 41 <br /> 14 40 43 36 35 35 32 53 56 49 39 40 42 <br /> 15 44 42 36 35 36 33 39 52 52 43 38 46 <br /> 16 43 41 36 36 36 34 39 50 49 44 39 41 <br /> 17 42 41 36 34 36 37 37 47 53 43 37 85 <br /> 18 40 40 36 34 35 46 35 41 188 41 40 125 <br /> 19 38 40 35 36 35 55 33 39 210 58 47 65 <br /> 20 34 40 36 34 35 62 34 39 111 49 46 53 <br /> 21 33 40 35 35 35 71 32 38 73 53 50 62 <br /> 22 34 40 35 33 35 84 32 32 60 50 46 61 <br /> 23 33 40 36 34 34 86 38 31 53 47 41 50 <br /> 24 34 40 36 34 34 84 98 29 53 48 40 47 <br /> 25 36 41 36 33 34 96 86 27 66 44 41 45 <br /> 26 31 40 36 34 33 134 65 29 57 40 42 46 <br /> 27 37 40 36 36 35 141 56 31 49 41 38 44 <br /> 28 37 41 35 35 34 133 52 39 39 58 39 52 <br /> 29 39 39 35 36 --- 115 52 49 39 58 36 54 <br /> 30 39 39 34 35 --- 106 50 53 52 80 86 48 <br /> 31 39 --- 34 34 --- 101 --- 73 --- 51 143 --- <br /> <br />TOTAL 1169 1292 1141 1090 978 1883 1912 1453 2309 1446 1482 1592 <br />MEAN 38 43 37 35 35 61 64 47 77 47 48 53 <br />AC-FT 2320 2560 2260 2160 1940 3730 3790 2880 4580 2870 2940 3160 <br />MAX 49 53 41 37 37 141 107 141 210 80 143 125 <br />MIN 31 39 34 33 33 32 32 25 39 37 36 40 <br /> <br />WTR YR 2003 TOTAL 17747 MEAN 48.6 MAX 210 MIN 25 AC-FT 35200 <br /> <br />MAX DISCH: 342 CFS AT 15:00 ON Jun. 18, 2003 GH 2.62 FT. SHIFT 0.02 FT. <br />MAX GH: 2.62 FT. AT 15:00 ON Jun. 18, 2003 <br /> <br />FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD. <br /> <br /> <br />0 <br />50 <br />100 <br />150 <br />200 <br />250 <br />OctNovDecJanFebMarAprMayJunJulAugSep