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16 <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.--4,713 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.--The satellite record is the primary record. Record is complete and reliable except for July 8, <br />1999 when inlets malfunctioned and the record was estimated. Chart record was used on Nov. 26-27; <br />Dec. 1, 3, 24, 1998; Feb. 22; Apr. 22-23; July 8-9; Aug. 4-10, 19, 25-26, 1999 to fill in missing <br />hourly DCP data. Station maintained and record developed by Brent Schantz. <br /> <br />RATING TABLE.--PLAHENCO30 USED FROM 01-OCT-1998 TO 30-SEP-1999 <br /> <br />DISCHARGE, IN CFS, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999 <br />MEAN VALUES <br /> <br /> DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP <br /> <br /> 1 294 446 446 426 204 264 200 4360 3450 932 2700 803 <br /> 2 471 559 438 430 215 255 453 3280 3110 1090 1380 574 <br /> 3 357 368 444 433 220 250 402 2750 2800 790 873 718 <br /> 4 435 370 443 437 209 245 337 2660 2220 660 1660 499 <br /> 5 359 325 454 446 208 270 516 2500 2000 583 5490 436 <br /> 6 360 310 497 463 210 239 297 2220 1920 445 2830 411 <br /> 7 346 524 473 497 211 239 224 1900 1760 398 2580 381 <br /> 8 299 488 466 489 213 226 197 1340 1260 487 2840 395 <br /> 9 303 512 450 440 213 213 195 1170 1240 1070 2640 474 <br /> 10 301 485 464 439 212 204 191 1100 2840 1320 3460 503 <br /> 11 292 399 463 443 231 208 190 1070 2730 1460 2880 549 <br /> 12 286 401 456 431 229 240 195 1170 2640 1340 1870 569 <br /> 13 280 377 459 429 220 274 195 945 2810 775 1630 557 <br /> 14 280 366 472 420 217 231 1560 924 2910 639 1280 529 <br /> 15 270 359 463 424 221 220 873 841 3460 608 1080 500 <br /> 16 372 405 453 427 248 215 492 1020 3220 619 1030 509 <br /> 17 435 523 452 419 279 212 345 1160 3640 738 1070 512 <br /> 18 312 512 455 419 282 223 311 716 3720 862 1050 503 <br /> 19 293 493 448 408 289 226 279 728 3400 1330 781 627 <br /> 20 292 502 425 351 290 226 251 1070 3280 1660 909 1040 <br /> 21 296 533 419 249 287 208 235 874 2940 471 769 928 <br /> 22 287 485 419 266 290 195 2380 680 2770 329 734 660 <br /> 23 284 479 416 272 282 177 3130 952 2710 382 634 541 <br /> 24 280 474 418 251 284 132 1390 847 2680 539 563 473 <br /> 25 274 460 410 236 276 115 1550 2100 2290 632 457 450 <br /> 26 270 472 459 239 275 115 1190 2360 2190 674 355 444 <br /> 27 282 447 502 226 275 117 938 2840 2020 487 353 430 <br /> 28 643 457 476 230 271 104 916 3450 1890 704 766 958 <br /> 29 401 458 469 226 --- 116 2560 4110 1640 1540 532 817 <br /> 30 305 467 453 239 --- 138 4500 3900 1460 1100 402 608 <br /> 31 319 --- 512 241 --- 163 --- 3640 --- 2470 360 --- <br /> <br /> TOTAL 10278 13456 14074 11346 6861 6260 26492 58677 77000 27134 45958 17398 <br /> MEAN 332 449 454 366 245 202 883 1893 2567 875 1483 580 <br /> AC-FT 20390 26690 27920 22500 13610 12420 52550 116400 152700 53820 91160 34510 <br /> MAX 643 559 512 497 290 274 4500 4360 3720 2470 5490 1040 <br /> MIN 270 310 410 226 204 104 190 680 1240 329 353 381 <br /> <br /> CAL YR 1998 TOTAL 258325 MEAN 708 MAX 3780 MIN 261 AC-FT 512400 <br /> WTR YR 1999 TOTAL 314934 MEAN 863 MAX 5490 MIN 104 AC-FT 624700 <br /> <br /> MAX DISCH 9722 CFS AT 2100 30-APR-1999 GH 8.84 FT. SHIFT 0.27 FT. MAX GH 8.84 FT. AT 2100 30-APR-1999 <br /> <br /> FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD. <br /> <br />0 <br />1000 <br />2000 <br />3000 <br />4000 <br />5000 <br />6000 <br />OctNovDecJanFebMarAprMayJunJulAugSep