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17 <br />PLATTE RIVER BASIN <br /> <br />06707500 SOUTH PLATTE RIVER AT SOUTH PLATTE, CO <br /> <br />LOCATION.--Lat 39°24'32", long 105°10'12", 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 ft <br />downstream from North Fork. <br /> <br />DRAINAGE AREA AND PERIOD OF RECORD.--2,579 mi²; Jan. 1896 to present. <br /> <br />GAGE.--Data Collection Platform (DCP), shaft encoder and a continuous chart recorder in a concrete shelter and <br />60-inch CMP well. The primary refrerence gage is an electric tape gage mounted on the equipment shelf. <br />A cableway is used for high water measurement. The gage is on Denver Water Dept. property, but is owned <br />and operated by Colorado Div. of Water Resources. <br />REMARKS.--The primary record is hourly averages of 15-minute satellite data with chart back up. The primary <br />record agrees with the chart to within ±0.02 ft. The record is complete and reliable, except for the <br />following days when ice affected the stage-discharge relationship: December 26, 2007 through February <br />28, 2008. These time periods were compared to Denver Water Dept. Inflows into Strontia Reservoir and <br />also compared to trends in releases from Cheeseman Reservoir added to flows at the station at Grant. <br />The record is good, except for the periods of ice affected record, which are estimated and considered <br />poor. Station maintained by Steve Barrett and Mike Wild and record developed by Mike Wild. <br /> <br />RATING TABLE.--PLASPLCO16 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 /> 1 497 256 334 183 213 191 218 1160 825 1190 669 539 <br /> 2 496 226 344 231 200 198 202 1150 877 1230 641 526 <br /> 3 495 205 342 234 203 176 208 1120 960 1260 642 495 <br /> 4 490 204 353 253 213 188 200 1120 964 1280 655 523 <br /> 5 499 337 286 242 196 184 220 1070 971 1240 663 534 <br /> 6 536 252 266 241 178 172 224 922 953 1240 659 528 <br /> 7 536 231 240 225 194 176 230 968 1000 1270 674 512 <br /> 8 519 230 231 218 212 187 225 879 994 1140 664 512 <br /> 9 472 242 210 228 202 187 226 886 927 1150 594 512 <br /> 10 472 292 216 198 203 185 239 861 900 1090 639 504 <br /> 11 469 292 232 210 216 185 230 838 932 1030 654 506 <br /> 12 468 291 217 190 211 193 213 840 902 986 626 613 <br /> 13 470 286 219 191 211 192 231 855 902 940 689 578 <br /> 14 486 255 218 204 209 193 236 766 899 888 683 468 <br /> 15 464 243 191 219 197 182 246 780 898 862 722 448 <br /> 16 312 249 202 194 202 187 268 631 914 858 892 430 <br /> 17 230 274 218 178 185 191 285 625 909 938 1020 389 <br /> 18 213 273 225 206 188 168 371 639 844 976 951 335 <br /> 19 344 262 223 214 204 163 424 658 889 949 931 356 <br /> 20 432 226 233 230 208 200 433 760 832 826 1020 441 <br /> 21 450 312 229 245 214 207 450 899 822 804 955 443 <br /> 22 409 273 206 193 195 202 475 826 815 809 766 452 <br /> 23 290 268 209 201 192 197 319 838 817 880 765 487 <br /> 24 265 305 211 175 187 197 323 803 812 967 744 483 <br /> 25 260 320 225 211 196 210 353 782 907 1150 653 481 <br /> 26 285 340 210 211 187 238 717 814 976 1140 575 493 <br /> 27 327 325 226 215 196 245 734 808 968 1120 560 528 <br /> 28 358 252 186 222 213 228 721 721 1060 1070 541 534 <br /> 29 346 199 216 198 188 228 978 758 1150 884 534 495 <br /> 30 318 208 241 205 --- 233 1120 773 1170 847 534 491 <br /> 31 302 --- 219 194 --- 235 --- 776 --- 796 535 --- <br /> <br />TOTAL 12510 7928 7378 6559 5813 6118 11319 26326 27789 31810 21850 14636 <br />MEAN 404 264 238 212 200 197 377 849 926 1026 705 488 <br />AC-FT 24810 15730 14630 13010 11530 12140 22450 52220 55120 63100 43340 29030 <br />MAX 536 340 353 253 216 245 1120 1160 1170 1280 1020 613 <br />MIN 213 199 186 175 178 163 200 625 812 796 534 335 <br /> <br />CAL YR 2007 TOTAL 244941 MEAN 671 MAX 1850 MIN 152 AC-FT 485800 <br />WTR YR 2008 TOTAL 180036 MEAN 492 MAX 1280 MIN 163 AC-FT 357100 <br /> <br />MAX DISCH: 1330 CFS AT 04:45 ON Jul. 7, 2008 GH 4.5 FT. SHIFT -0.06 FT. <br />MAX GH: 4.5 FT. AT 04:45 ON Jul. 7, 2008 <br /> <br />FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD. <br /> <br /> <br />