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7 <br /> PLATTE RIVER BASIN <br /> <br />06707500 SOUTH PLATTE RIVER AT SOUTH PLATTE, CO <br /> <br />LOCATION.--Lat 39°24'33", long 105°10'10", SE¼ sec. 25, T.7 S., R.70 W., Jefferson County, Hydrologic Unit <br />10190002, on left bank at South Platte, 200 ft downstream from bridge on State Highway 75, and 400 <br />ft downstream from North Fork. <br /> <br />DRAINAGE AREA AND PERIOD OF RECORD.--2,579 mi²; 1910 to present. <br /> <br />GAGE.--A graphic water stage recorder and satellite monitoring equipment in a concrete shelter and CMP <br />well. The Sutron 8004 DCP was replaced with an 8210. The primary gage is an electric tape gage <br />mounted on the equipment shelf. The station was rebuilt with a 60” CMP well and concrete shelter in <br />1994. 120-volt electricity was installed in 2001. The cable way was rebuilt in 1995. The gage is <br />on Denver Water Board property. <br />REMARKS.--The primary record is hourly data taken from satellite readings with chart back up. The record <br />is complete, except for December 23--January 14 when the DCP failed. Chart back-up exists for the <br />missing period, but it was not used to develop record since the gage was ice-affected and the <br />discharge was estimated. Mean daily values from the chart were used December 1-22. The record is <br />good, except for estimated daily discharges which are poor. The record is estimated for the <br />following days of ice effect using the Denver Department computed inflows for the Strontia Springs <br />Reservoir operations numbers: December 18, 2003 through February 28, 2004. Station maintained and <br />recored developed by Steve Barrett. <br />RATING TABLE.--PLASPLCO16 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 /> 1 519 237 232 139 124 221 243 296 359 411 593 446 <br /> 2 430 237 178 158 110 248 280 275 356 343 620 499 <br /> 3 394 240 156 145 120 289 296 272 364 315 555 550 <br /> 4 291 219 156 101 163 306 285 282 406 413 614 553 <br /> 5 281 189 168 81 174 306 285 304 428 424 686 541 <br /> 6 291 186 150 123 133 260 263 320 428 409 786 396 <br /> 7 361 193 150 146 140 264 270 316 435 406 827 385 <br /> 8 369 233 150 157 146 269 283 354 508 408 795 387 <br /> 9 404 235 154 151 161 274 287 334 533 453 679 461 <br /> 10 401 250 141 139 108 293 239 331 628 507 567 464 <br /> 11 400 220 154 130 108 294 222 313 616 491 482 500 <br /> 12 401 211 154 118 137 273 227 278 616 420 522 494 <br /> 13 387 215 145 240 164 259 224 281 594 411 518 490 <br /> 14 331 213 166 227 177 254 226 264 523 430 492 499 <br /> 15 337 210 166 242 192 257 260 252 519 535 487 535 <br /> 16 375 203 136 228 186 263 271 247 447 557 509 530 <br /> 17 370 224 156 193 187 263 343 240 490 609 592 530 <br /> 18 372 221 169 171 194 270 468 234 496 403 609 486 <br /> 19 378 223 169 179 190 303 456 235 393 321 708 481 <br /> 20 416 232 176 190 181 309 362 301 360 452 517 485 <br /> 21 494 227 176 163 183 312 272 420 363 562 437 494 <br /> 22 471 231 160 128 179 315 276 484 474 798 427 503 <br /> 23 354 213 124 150 172 296 286 413 347 881 480 398 <br /> 24 349 210 136 159 186 293 278 405 326 1050 556 342 <br /> 25 340 240 144 148 182 277 300 399 437 981 547 340 <br /> 26 270 231 146 135 200 266 304 356 591 840 522 343 <br /> 27 273 225 116 123 213 241 313 307 578 593 465 351 <br /> 28 246 229 99 155 214 222 330 316 441 555 482 426 <br /> 29 242 236 104 135 226 180 322 385 333 575 457 411 <br /> 30 240 243 152 117 --- 182 321 406 304 526 448 398 <br /> 31 238 --- 146 129 --- 181 --- 399 --- 552 449 --- <br /> <br />TOTAL 11025 6676 4729 4800 4850 8240 8792 10019 13693 16631 17428 13718 <br />MEAN 356 223 153 155 167 266 293 323 456 536 562 457 <br />AC-FT 21870 13240 9380 9520 9620 16340 17440 19870 27160 32990 34570 27210 <br />MAX 519 250 232 242 226 315 468 484 628 1050 827 553 <br />MIN 238 186 99 81 108 180 222 234 304 315 427 340 <br /> <br />WTR YR 2004 TOTAL 120601 MEAN 330 MAX 1050 MIN 81 AC-FT 239200 <br /> <br />MAX DISCH: 1150 CFS AT 22:00 ON Aug. 5, 2004 GH 4.2 FT. SHIFT -0.02 FT. <br />MAX GH: 4.2 FT. AT 22:00 ON Aug. 5, 2004 <br /> <br />FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD. <br /> <br />0 <br />500 <br />1000 <br />1500 <br />Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep