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<br /> <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 shaft encoder installed in a <br />formed concrete well and shelter. The DCP is located about 2000 ft away on the outlet structure in <br />the lake, and is also used for lake elevation. An electric drop tape is used for referencing. <br />There is no outside reference. The gage and DCP are owned by the USACOE and the DCP is maintained <br />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. Two .01 corrections to the encoder data were <br />applied for short periods. The control was cleaned of moss on most visits with no corrections <br />observed. The record is complete and reliable. The record is fair due to inconsistencies in the <br />measurements as compared with previous years. Station maintained and record developed by Jana Ash <br />and Robert E Cooper. <br /> <br />RATING TABLE.--PLACHACO03 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 .08 4.7 .09 18 .06 2.9 71 465 230 113 116 217 <br /> 2 .09 4.7 .09 18 .06 2.9 71 307 307 209 43 190 <br /> 3 .08 4.6 .09 18 .07 2.9 72 285 263 142 47 178 <br /> 4 .08 4.7 .09 18 .06 2.9 72 227 157 49 167 196 <br /> 5 .08 4.6 .09 18 .06 2.9 72 183 59 61 140 231 <br /> 6 .08 4.6 .08 9.5 .07 2.9 72 169 78 134 60 196 <br /> 7 .09 2.7 .08 6.2 .07 2.9 72 152 67 115 113 107 <br /> 8 1.5 .17 .08 4.1 .06 2.9 230 113 .93 49 76 107 <br /> 9 3.7 .15 .08 .07 .06 2.9 363 72 57 49 33 186 <br /> 10 4.2 .12 .08 1.9 .06 2.9 364 108 219 33 67 252 <br /> 11 4.3 .12 .08 4 .06 2.9 230 179 272 .55 160 181 <br /> 12 4.4 .14 .08 4 3.1 2.9 179 200 250 .52 166 81 <br /> 13 4.4 .11 .07 4 5.8 2.9 179 200 251 .56 115 29 <br /> 14 4.4 .11 .07 4 3.9 2.9 108 150 156 47 115 29 <br /> 15 4.5 .11 .07 2.1 3.1 2.1 179 100 111 97 81 29 <br /> 16 4.4 .1 .08 .07 3.1 1.8 350 138 195 97 29 29 <br /> 17 3.7 .1 .08 .07 3.1 1.6 267 168 197 97 29 21 <br /> 18 3.5 .11 .08 .07 2.9 1.5 207 166 197 111 18 6.5 <br /> 19 3.4 .09 .08 .07 2.9 1.4 207 202 84 145 15 1.1 <br /> 20 3.3 .09 1.6 .07 2.9 1.4 207 237 63 133 28 .97 <br /> 21 3.3 .09 5.6 .07 2.9 1.5 268 217 227 121 21 .88 <br /> 22 3.3 .09 5.6 .07 2.9 1.5 353 123 248 119 9 .87 <br /> 23 3.3 .09 11 .07 2.9 1.5 279 28 246 141 2.2 21 <br /> 24 3.3 .09 18 .07 2.9 86 233 138 265 84 2 42 <br /> 25 3.4 .1 18 .07 2.9 214 267 247 213 21 40 69 <br /> 26 3.8 .09 19 .07 2.9 214 267 289 141 35 93 105 <br /> 27 4.5 .11 18 .07 2.9 214 269 303 112 100 105 105 <br /> 28 4.5 .09 18 .06 2.9 186 351 276 102 157 117 105 <br /> 29 4.7 .09 18 .06 --- 157 513 316 100 247 136 105 <br /> 30 4.7 .09 18 .06 --- 157 624 398 59 264 90 67 <br /> 31 4.7 --- 18 .06 --- 118 --- 290 --- 157 120 --- <br /> <br />TOTAL 93.78 33.05 170.34 130.95 54.69 1400.9 6996 6446 4926.93 3128.63 2353.2 2888.32 <br />MEAN 3.03 1.1 5.49 4.22 1.95 45.2 233 208 164 101 75.9 96.3 <br />AC-FT 186 66 338 260 108 2780 13880 12790 9770 6210 4670 5730 <br />MAX 4.7 4.7 19 18 5.8 214 624 465 307 264 167 252 <br />MIN .08 .09 .07 .06 .06 1.4 71 28 .93 .52 2 .87 <br /> <br />WTR YR 2003 TOTAL 28622.79 MEAN 78.4 MAX 624 MIN .06 AC-FT 56770 <br /> <br />MAX DISCH: 627 CFS AT 15:00 ON Apr. 29, 2003 GH 3.36 FT. SHIFT 0.03 FT. <br />MAX GH: 3.36 FT. AT 15:00 ON Apr. 29, 2003 <br /> <br />FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD. <br /> <br />0 <br />200 <br />400 <br />600 <br />800 <br />OctNovDecJanFebMarAprMayJunJulAugSep