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21 <br />PLATTE RIVER BASIN <br /> <br />06708000 SOUTH PLATTE RIVER AT WATERTON, CO <br /> <br />LOCATION.--Lat 39°29'18", long 105°05'32", in NE¼ sec. 34, T.6 S., R.69 W., Jefferson County, Hydrologic Unit <br />10190002, on left bank 168 ft downstream from bridge on State Highway 221, 0.4 mi south of Waterton, 4.7 <br />mi west of Louviers, and 6 mi upstream from Plum Creek. <br /> <br />DRAINAGE AREA AND PERIOD OF RECORD.--2,621 mi²; 1926 to present. <br /> <br />GAGE.--Graphic stage recorder, satellite monitoring DCP with a phone modem, and shaft encoder (on separate <br />floats) in a 60” galvanized, corrugated steel shelter and well. The primary reference is an electric <br />drop tape. Datum of gage 5,484.43 ft National Geodetic Vertical Datum. <br /> <br />REMARKS.--The primary record is hourly data taken from satellite monitoring with chart back up. The record is <br />complete and reliable except for the following days, November 29, 30; December 1, 2, 2004; January 31; <br />and February 1, 2, 9, 2005, when small adjustments to 5 or less Hourly GH’s were made to correct for ice <br />peaks. These days are considered good record after adjustment. Greater adjustments for ice peaks were <br />needed for December 22-24, 2004; January 13, 14, 2005. The record is rated good except for December 22- <br />24; and January 13, 14; which were estimated and fair due to accumulation of ice on the control and in <br />the well. Station maintained by Jana Ash and record developed by Jana Ash and Bob Cooper. <br /> <br />RATING TABLE.--PLAWATCO09 USED FROM 01-OCT-2004 TO 30-SEP-2005 <br /> <br /> DISCHARGE, IN CFS, WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005 <br /> MEAN VALUES <br /> <br /> DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP <br /> <br /> 1 35 35 32 17 34 21 30 425 696 89 60 61 <br /> 2 32 33 31 17 34 21 30 399 480 229 60 62 <br /> 3 31 32 31 17 35 19 30 450 264 392 61 65 <br /> 4 31 33 31 17 33 19 34 485 284 337 156 64 <br /> 5 31 32 31 18 32 18 36 361 419 294 419 70 <br /> 6 32 32 30 25 32 18 33 267 388 358 425 72 <br /> 7 31 32 29 30 33 19 33 261 266 376 204 64 <br /> 8 31 32 29 32 32 19 29 347 177 240 58 62 <br /> 9 31 32 23 29 32 20 15 373 137 139 59 61 <br /> 10 31 34 18 29 33 20 23 313 204 140 60 61 <br /> 11 31 33 18 30 32 20 26 289 437 102 86 61 <br /> 12 31 34 18 31 31 19 33 382 498 67 189 60 <br /> 13 33 33 18 29 31 20 34 443 471 72 221 61 <br /> 14 31 33 18 25 31 23 54 403 355 124 203 61 <br /> 15 31 33 18 32 31 24 59 344 209 134 153 60 <br /> 16 30 32 18 30 32 24 117 247 89 142 67 41 <br /> 17 30 33 18 31 32 24 101 131 63 195 65 19 <br /> 18 31 33 17 32 32 25 91 59 63 197 73 20 <br /> 19 33 31 17 32 31 25 64 116 63 111 69 19 <br /> 20 31 33 16 31 29 26 43 195 65 62 71 20 <br /> 21 31 33 17 33 29 27 39 251 64 59 71 19 <br /> 22 31 32 17 34 29 27 40 299 124 59 164 19 <br /> 23 33 32 15 34 29 29 32 286 192 59 185 18 <br /> 24 31 32 15 34 24 30 27 326 219 61 98 18 <br /> 25 33 31 17 34 16 30 39 331 338 61 63 18 <br /> 26 32 31 17 35 17 30 62 390 367 171 62 15 <br /> 27 32 32 17 35 16 29 55 476 258 285 62 13 <br /> 28 32 32 17 34 17 29 244 472 199 254 62 17 <br /> 29 32 31 22 34 --- 30 300 390 154 144 61 27 <br /> 30 32 31 16 35 --- 31 431 474 89 60 61 37 <br /> 31 33 --- 16 35 --- 39 --- 717 --- 60 61 --- <br /> <br />TOTAL 980 972 647 911 819 755 2184 10702 7632 5073 3709 1265 <br />MEAN 32 32 21 29 29 24 73 345 254 164 120 42 <br />AC-FT 1940 1930 1280 1810 1620 1500 4330 21230 15140 10060 7360 2510 <br />MAX 35 35 32 35 35 39 431 717 696 392 425 72 <br />MIN 30 31 15 17 16 18 15 59 63 59 58 13 <br /> <br />WTR YR 2005 TOTAL 35649 MEAN 97.7 MAX 717 MIN 13 AC-FT 70710 <br /> <br />MAX DISCH: 1580 CFS AT 22:30 ON Apr. 28, 2005 GH 2.85 FT. SHIFT 0.02 FT. <br />MAX GH: 2.85 FT. AT 22:30 ON Apr. 28, 2005 <br /> <br />FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD. <br /> <br /> <br />