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<br /> <br />PLATTE RIVER BASIN <br /> <br />06720500 SOUTH PLATTE RIVER AT HENDERSON, CO <br /> <br />LOCATION --Lat 39°55'19", long 104°52'00", in SE¼NE¼ sec. 34, T.l S., R,67 W., Adams County, Hydrologic <br />Unit 10190003, on right bank 500 ft upstream from bridge on State Highway 22 and 0.2 mi northwest of <br />Henderson. <br /> <br />PERIOD OF RECORD AND DRAINAGE AREA.--4,768 mi². May 1926 to current year. Monthly data only prior to <br />1933. Periodic water quality data available starting in 1955. <br /> <br />GAGE.--Water-stage recorder with satellite telemetry, shaft encoder and Telemark in a 42-inch metal pipe <br />shelter with electric drop tape and outside wire weight as additional reference. An Accubar was <br />installed April 25, 1997 and run in parallel with the shaft encoder. The Accubar is used as primary <br />record during periods of low flows when the well becomes isolated. <br /> <br />REMARKS.--Primary record is hourly readings, taken from satellite monitoring of the stilling well with <br />chart back up on the well. The entire year record is Shaft Encoder record, and daily <br />maximum/minimum from the primary printout were checked to within +/- .02 against well chart. The <br />gage height record is complete and reliable except for July 30 – August 5, 2003 when all three of <br />the inlets became plugged; this period of record is considered poor. October 1, 2002 – September <br />30, 2003: Stilling well data. Record is rated as good, except for flows above 2,990 cfs (including <br />the recorded peak flow), which are fair due to lack of confirming measurements made this year above <br />2,990 cfs. Flow recorded July 30, 2003 thru August 5, 2003 is considered poor due to the inlets <br />being buried and plugged. Station maintained and record developed by Jana Ash and Lee Cunning. <br /> <br />RATING TABLE.--PLAHENCO32 USED FROM 01-OCT-2002 TO 08-OCT-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 /> 1 203 216 179 160 290 319 335 675 1930 703 221 523 <br /> 2 644 239 186 163 284 320 344 472 2010 798 225 348 <br /> 3 307 286 176 165 358 331 277 457 1660 836 186 494 <br /> 4 237 287 177 160 374 306 229 389 1410 629 187 301 <br /> 5 177 266 175 163 301 320 221 305 1410 539 227 265 <br /> 6 164 266 177 168 301 323 268 223 1170 530 247 249 <br /> 7 164 272 168 167 300 303 261 200 1660 611 246 255 <br /> 8 157 275 169 160 309 299 262 216 902 509 261 303 <br /> 9 154 331 176 164 311 286 256 250 784 368 552 209 <br /> 10 151 326 170 161 313 286 232 2840 864 369 252 188 <br /> 11 150 342 166 165 309 277 217 1430 956 426 285 159 <br /> 12 149 337 163 162 306 285 206 925 993 387 509 155 <br /> 13 154 288 168 184 316 263 194 654 958 375 396 141 <br /> 14 158 247 174 273 318 219 257 513 935 368 350 155 <br /> 15 155 256 170 243 319 214 283 371 927 366 334 162 <br /> 16 152 256 176 240 312 220 616 437 927 376 253 143 <br /> 17 157 249 171 255 274 272 519 448 949 355 203 126 <br /> 18 154 255 170 255 271 880 268 596 1950 341 231 136 <br /> 19 149 252 166 254 263 416 999 698 1200 1080 432 142 <br /> 20 151 242 167 254 249 651 544 520 1060 434 228 134 <br /> 21 156 252 173 250 247 1030 357 442 995 391 199 128 <br /> 22 154 241 173 242 258 1100 455 300 889 382 194 141 <br /> 23 157 239 170 240 263 1100 862 255 824 381 189 133 <br /> 24 158 249 186 252 274 876 2350 254 738 369 181 132 <br /> 25 159 271 153 284 266 636 690 395 679 296 194 131 <br /> 26 155 261 151 292 270 734 430 479 607 236 203 120 <br /> 27 169 256 164 292 290 750 364 452 539 374 240 113 <br /> 28 179 238 166 289 272 474 326 597 476 394 252 112 <br /> 29 277 174 164 287 --- 418 502 685 543 426 255 120 <br /> 30 321 181 169 289 --- 363 696 1220 720 724 880 109 <br /> 31 222 --- 169 294 --- 351 --- 1840 --- 341 2240 --- <br /> <br />TOTAL 5994 7850 5282 6927 8218 14622 13820 19538 31665 14714 10852 5827 <br />MEAN 193 262 170 223 294 472 461 630 1056 475 350 194 <br />AC-FT 11890 15570 10480 13740 16300 29000 27410 38750 62810 29190 21520 11560 <br />MAX 644 342 186 294 374 1100 2350 2840 2010 1080 2240 523 <br />MIN 149 174 151 160 247 214 194 200 476 236 181 109 <br /> <br />WTR YR 2003 TOTAL 145309 MEAN 398 MAX 2840 MIN 109 AC-FT 288200 <br /> <br />MAX DISCH: 5130 CFS AT 18:45 ON May. 10, 2003 GH 7.57 FT. SHIFT 0 FT. <br />MAX GH: 7.57 FT. AT 18:45 ON May. 10, 2003 <br /> <br />FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD. <br /> <br />0 <br />1000 <br />2000 <br />3000 <br />OctNovDecJanFebMarAprMayJunJulAugSep