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7 <br />PLATTE RIVER BASIN <br /> <br />06696000 SOUTH PLATTE RIVER BELOW ELEVENMILE RESERVOIR NEAR LAKE GEORGE, CO <br /> <br />LOCATION.--Lat 38°54'19", long 105°28'22". in SW¼ sec. 20, T.13 S., R.72 W., Park County, Hydrologic Unit <br />10190001, on left bank 700 ft downstream from Elevenmile Canyon Reservoir and 8.2 mi southwest of town <br />of Lake George. <br /> <br />DRAINAGE AREA AND PERIOD OF RECORD.--963 mi². October 1929 to current year. Monthly data only for some <br />periods. <br /> <br />GAGE.--Data Collection Platform (DCP), shaft encoder and a continuous chart recorder in a concrete shelter at a <br />15-ft. Parshall Flume. Primary reference is an electric tape gage with supplemental outside staff gage <br />in the flume. A 10-foot rectangular bypass channel is located beside the upper right wingwall of the <br />15-foot Parshall flume. The bypass channel is normally kept closed by boards. At a gage height of 3.26 <br />in the Parshall, water reaches the floor of the bypass channel. Elevation of gage is 8,458 ft from <br />topographic map. Gage is owned and maintained by the Denver Water Dept. <br /> <br />REMARKS.—Primary record is hourly averages of 15-minute satellite data with chart backup. The record is <br />complete and reliable for the water year. Chart record was used to fill in any missing satellite data <br />without loss of accuracy. The record is good. Station operated and record developed by Mike Wild. <br /> <br />RATING TABLE.--STD15FTPF 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 55 120 177 67 53 64 56 316 62 366 276 161 <br /> 2 57 114 172 68 54 66 56 192 68 401 272 147 <br /> 3 55 111 165 70 55 65 55 100 72 416 267 124 <br /> 4 55 106 155 74 57 64 54 105 80 413 260 96 <br /> 5 56 76 139 77 62 62 54 111 100 412 255 78 <br /> 6 58 56 130 80 64 61 53 117 124 412 251 84 <br /> 7 56 60 121 83 64 60 53 114 136 412 248 88 <br /> 8 55 62 116 89 67 59 55 117 153 409 244 89 <br /> 9 56 64 114 90 64 60 61 111 153 400 239 92 <br /> 10 58 67 108 91 65 59 68 105 144 386 241 96 <br /> 11 60 69 105 91 67 58 73 93 129 367 246 95 <br /> 12 61 70 103 91 67 57 78 86 115 343 254 121 <br /> 13 62 75 99 92 67 57 82 80 103 329 263 126 <br /> 14 66 78 96 92 66 66 86 81 97 317 269 128 <br /> 15 70 95 92 92 67 67 90 81 94 306 272 131 <br /> 16 70 109 90 91 66 66 91 79 88 304 278 126 <br /> 17 73 119 88 92 64 67 101 76 88 309 287 120 <br /> 18 73 130 83 91 63 66 109 75 78 316 293 112 <br /> 19 67 141 78 87 62 64 121 70 80 315 288 104 <br /> 20 65 145 74 83 61 63 135 67 126 318 257 98 <br /> 21 66 154 70 80 60 62 143 67 168 321 222 96 <br /> 22 68 162 68 75 59 60 154 66 191 317 223 94 <br /> 23 66 166 65 72 60 60 171 65 213 311 228 94 <br /> 24 68 171 63 70 61 60 185 68 234 331 236 98 <br /> 25 69 175 60 68 59 59 259 69 257 337 234 101 <br /> 26 70 178 59 64 60 59 316 66 277 321 228 104 <br /> 27 71 181 61 60 62 60 308 66 294 313 223 106 <br /> 28 72 180 63 58 64 59 299 65 304 306 184 108 <br /> 29 73 182 65 57 65 59 341 65 318 298 158 109 <br /> 30 75 177 67 54 --- 57 366 62 340 291 160 112 <br /> 31 99 --- 67 53 --- 60 --- 59 --- 281 161 --- <br /> <br />TOTAL 2025 3593 3013 2402 1805 1906 4073 2894 4686 10678 7517 3238 <br />MEAN 65.3 120 97.2 77.5 62.2 61.5 136 93.4 156 344 242 108 <br />AC-FT 4020 7130 5980 4760 3580 3780 8080 5740 9290 21180 14910 6420 <br />MAX 99 182 177 92 67 67 366 316 340 416 293 161 <br />MIN 55 56 59 53 53 57 53 59 62 281 158 78 <br /> <br />CAL YR 2007 TOTAL 42585 MEAN 117 MAX 385 MIN 36 AC-FT 84470 <br />WTR YR 2008 TOTAL 47830 MEAN 131 MAX 416 MIN 53 AC-FT 94870 <br /> <br />MAX DISCH: 846 CFS AT 11:30 ON May. 2, 2008 GH 5.35 FT. SHIFT 0.02 FT. <br />MAX GH: 5.35 FT. AT 11:30 ON May. 2, 2008 <br /> <br />FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD. <br />