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6 <br /> <br />PLATTE RIVER BASIN <br /> <br />06706000 NORTH FORK SOUTH PLATTE RIVER BELOW GENEVA CREEK, AT GRANT, CO <br /> <br />LOCATION.--Lat 39°27'26", long 105°39'29" in NW¼ sec. 10, T.7 S., R.74 W., Park County, Hydrologic Unit <br />10190002, on left bank at Grant, 1,550 ft downstream from Geneva Creek, and 1.3 mi downstream from <br />east portal of Harold D. Roberts tunnel. <br /> <br />DRAINAGE AREA AND PERIOD OF RECORD.--127 mi²; 1948 to present. <br /> <br />GAGE.--Water-stage recorder with satellite telemetry in a wooden shelter at a concrete control section. <br />Station is owned and maintained by the Denver Water Dept. Satellite telemetry is maintained by the <br />U.S. Army Corps of Engineers and the USGS. <br /> <br />REMARKS.--The primary record is taken from the hourly satellite data and is complete. The shaft encoder <br />was accurate to ± 0.01 ft. so no corrections were entered. The record is reliable, except for the <br />following periods: Dec. 7-31, 1998-Jan. 1-17, 1999, when the stage-discharge relationship was <br />affected by ice on the control. Hourly chart values were used for Oct. 2-6, 1998. Record good <br />except for winter period Dec. 7-31, 1998-Jan. 1-17, 1999, which is estimated. Record developed by <br />Rodger Burcher. <br /> <br />RATING TABLE.--RATING TABLE PLAGRACO11 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 68 46 35 14 99 164 268 38 326 338 464 98 <br /> 2 60 45 36 14 99 163 282 36 342 324 421 97 <br /> 3 53 42 36 14 106 164 304 42 357 307 260 94 <br /> 4 53 36 35 14 130 163 304 41 365 289 185 88 <br /> 5 48 35 30 14 133 163 305 38 334 276 256 85 <br /> 6 49 47 25 14 131 163 301 38 292 288 281 81 <br /> 7 51 52 25 14 131 164 303 44 323 279 219 78 <br /> 8 51 41 25 21 130 163 332 63 362 280 210 75 <br /> 9 49 38 23 27 133 124 349 76 365 255 202 73 <br /> 10 48 31 23 30 134 110 347 72 369 237 204 72 <br /> 11 46 36 21 33 132 157 348 60 337 224 185 74 <br /> 12 44 42 22 35 133 175 352 61 328 206 176 73 <br /> 13 44 43 20 36 134 174 367 75 312 192 165 68 <br /> 14 45 44 13 38 137 174 345 91 346 188 164 66 <br /> 15 42 43 13 40 138 174 252 95 389 180 212 67 <br /> 16 39 42 13 41 136 175 210 98 383 195 220 97 <br /> 17 39 41 13 44 137 176 214 92 398 213 162 134 <br /> 18 37 41 13 46 138 176 216 96 400 174 160 112 <br /> 19 37 36 13 47 138 194 231 112 418 166 148 81 <br /> 20 38 34 13 47 138 205 242 132 412 164 147 91 <br /> 21 39 40 13 49 139 207 290 165 435 152 150 81 <br /> 22 39 44 13 53 140 245 225 197 426 152 140 77 <br /> 23 38 39 13 56 139 277 139 237 440 200 130 72 <br /> 24 37 38 13 60 157 282 124 272 440 261 124 70 <br /> 25 37 38 13 64 164 289 69 291 440 289 122 70 <br /> 26 41 38 14 68 162 276 35 252 412 318 124 64 <br /> 27 43 37 14 76 163 267 37 252 384 369 135 61 <br /> 28 43 38 14 87 164 264 44 270 361 433 134 61 <br /> 29 40 36 14 97 --- 264 48 296 350 439 120 61 <br /> 30 42 35 14 101 --- 269 43 317 346 409 109 60 <br /> 31 46 --- 14 99 --- 270 --- 333 --- 442 102 --- <br /> <br /> TOTAL 1386 1198 596 1393 3815 6231 6926 4282 11192 8239 5831 2381 <br /> MEAN 44.7 39.9 19.2 44.9 136 201 231 138 373 266 188 79.4 <br /> AC-FT 2750 2380 1180 2760 7570 12360 13740 8490 22200 16340 11570 4720 <br /> MAX 68 52 36 101 164 289 367 333 440 442 464 134 <br /> MIN 37 31 13 14 99 110 35 36 292 152 102 60 <br /> <br /> CAL YR 1998 TOTAL 36634 MEAN 100 MAX 720 MIN 13 AC-FT 72660 <br /> WTR YR 1999 TOTAL 53470 MEAN 146 MAX 464 MIN 13 AC-FT 106100 <br /> <br /> MAX DISCH 559 CFS AT 2100 28-JUL-1999 GH 1.84 FT. SHIFT 0.00 FT. MAX GH 1.84 FT. AT 2100 28-JUL-1999 <br /> <br /> FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD. <br /> <br /> <br />0 <br />200 <br />400 <br />600 <br />OctNovDecJanFebMarAprMayJunJulAugSep