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10 <br />PLATTE RIVER BASIN <br /> <br />06709610 SOUTH PLATTE RIVER BELOW CHATFIELD RESERVOIR, CO <br /> <br />LOCATION.--Lat 39°33'26", long 105°03'27", SE¼, sec. 1, T.6 S., R.69 W., Jefferson County, Hydrologic Unit <br />10190002. <br /> <br />DRAINAGE AREA.--3,018 mi². <br /> <br />GAGE.--A Stevens A-70 graphic water stage recorder and satellite monitoring DCP and shaft encoder installed <br />in a formed concrete well and shelter. The DCP is located about 2000 ft away on the outlet <br />structure in the lake, and is also used for lake elevation. An electric drop tape is used for <br />referencing. There is no outside reference. The gage and DCP are owned by the USACOE and the DCP <br />is maintained by the USGS. <br /> <br />REMARKS.--The primary record is hourly satellite data with chart back up. Daily max and min values agreed <br />with the corrected chart values to within +-0.02 foot. Three (-.01, +.01, & +.02) corrections to <br />the encoder data were applied for short periods. The record is complete and reliable. The record <br />is fair due to the lack of measurements due to the river being too low to measure most of the year. <br />Station maintained and record developed by Jana Ash. <br /> <br />RATING TABLE.--PLACHACO03 USED FROM 01-OCT-2003 TO 30-SEP-2004 <br /> <br /> DISCHARGE, IN CFS, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 <br /> MEAN VALUES <br /> <br /> DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP <br /> <br /> 1 15 .72 .36 .19 29 30 .07 352 .26 238 323 25 <br /> 2 .89 .7 .36 .19 29 55 3.7 228 .25 282 213 80 <br /> 3 .88 .7 .36 .23 29 67 9.7 92 .2 130 127 104 <br /> 4 .96 .67 .36 .23 29 67 8.3 77 8.3 67 165 54 <br /> 5 1 2.6 .31 .22 29 67 163 95 79 11 204 54 <br /> 6 1 5 .3 .2 37 67 330 120 176 58 305 54 <br /> 7 1 5 .3 .19 44 67 212 133 155 64 433 54 <br /> 8 1 5 .34 .2 44 45 107 99 104 87 420 40 <br /> 9 1.1 5 .33 .19 43 7.5 217 47 130 144 238 26 <br /> 10 6.2 5 .3 .19 43 3.5 217 77 147 144 141 26 <br /> 11 14 5 .3 .19 34 .11 216 141 80 143 187 26 <br /> 12 14 3 .3 .18 23 .08 144 172 12 142 198 26 <br /> 13 14 .47 .3 .18 23 .08 50 291 .27 126 129 35 <br /> 14 14 2.3 .3 8.9 23 .08 41 408 .25 68 129 55 <br /> 15 7.3 6.2 3.6 18 23 .08 30 207 .25 34 80 55 <br /> 16 1 5.5 15 18 23 .08 85 7.2 .29 96 11 49 <br /> 17 .84 3.6 24 18 23 .08 156 26 32 365 26 26 <br /> 18 .53 1.2 16 18 31 .08 154 78 109 611 73 8.7 <br /> 19 .51 1.1 8.5 18 43 .08 84 85 229 521 99 8.7 <br /> 20 .51 1.1 8.5 18 43 .08 14 23 207 322 170 7.1 <br /> 21 .6 1 8.5 18 43 .08 14 21 53 153 170 18 <br /> 22 .6 1 5.1 16 43 .08 14 79 41 102 51 33 <br /> 23 .6 .89 .25 14 36 .08 14 110 19 349 123 33 <br /> 24 .67 .6 .25 14 23 .08 14 51 8.7 714 236 21 <br /> 25 .7 .6 .25 15 23 .08 14 26 8.5 744 158 5.8 <br /> 26 .7 .54 .25 58 23 .07 18 6.9 8.2 481 31 5.8 <br /> 27 .72 .49 .22 59 23 .07 62 .4 103 213 31 5.7 <br /> 28 .78 .42 .2 14 24 .08 125 .36 378 275 31 5.8 <br /> 29 .7 .41 .19 22 24 .07 164 .3 326 361 55 11 <br /> 30 .76 .36 .19 29 --- .07 243 7.5 100 301 71 17 <br /> 31 .79 --- .19 29 --- .07 --- 8.7 --- 278 38 --- <br /> <br />TOTAL 103.34 66.17 95.71 407.48 907 477.66 2923.77 3069.36 2515.47 7624 4666 969.6 <br />MEAN 3.33 2.21 3.09 13.1 31 15.4 97.5 99 83.8 246 151 32.3 <br />AC-FT 205 131 190 808 1800 947 5800 6090 4990 15120 9260 1920 <br />MAX 15 6.2 24 59 44 67 330 408 378 744 433 104 <br />MIN .51 .36 .19 .18 23 .07 .07 .3 .2 11 11 5.7 <br /> <br />WTR YR 2004 TOTAL 23825.56 MEAN 65.1 MAX 744 MIN .07 AC-FT 47260 <br /> <br />MAX DISCH: 816 CFS AT 12:00 ON Jul. 24, 2004 GH 3.69 FT. SHIFT 0.03 FT. <br />MAX GH: 3.69 FT. AT 12:00 ON Jul. 24, 2004 <br /> <br />FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD. <br /> <br /> <br /> <br />0 <br />200 <br />400 <br />600 <br />800 <br />Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep