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11 <br />PLATTE RIVER BASIN <br /> <br />TARRYALL CREEK BELOW TARRYALL RESERVOIR, CO <br /> <br />LOCATION.--Lat. 39° 13’ 18”, Long. 105° 36’ 07”; in SW1/4 of sec 31, T. 9S, R. 73W, Park County, about 500 ft. <br />downstream from Tarryall Reservoir. <br /> <br />DRAINAGE AREA AND PERIOD OF RECORD.--355 sq. mi., from DWR Dam Safety Section database. Age of the gage is not <br />known, although the reservoir was built in 1929. DWR first ran levels in June of 1975, and installation <br />in 1970’s is consistent with the type of materials used. The gage has been operated infrequently and <br />records have never been kept prior to 2005. The gage was activated with satellite monitoring in WY2005. <br /> <br />GAGE.--SatLink 2 satellite monitoring Data Collection Platform (DCP) with shaft encoder in a 36” CMP shelter and <br />cast iron well, located on the right downstream abutment of a bridge on Park County Road 77. Gage is <br />operated and equipment is maintained by the CO Div. of Water Resources under a cooperative agreement with the <br />CO Div. of Wildlife, the owner of Tarryall Reservoir. There is an inside reference tape and a staff gage on <br />the center abutment of the bridge. Elevation of gage is 8800 ft. from topographic map. <br />REMARKS.--Record is taken from hourly average satellite readings and is complete and reliable, except for <br />December 5, 2006 to March 12, 2007, when the station was closed for the winter; December 4, 2006 and <br />March 13, 2007 were partial record days; and May 4, 2007 to May 13, 2007, when the DCP failed. Encoder <br />calibration was checked with 30 visits by DWR personnel while the gage was open. The record is good, <br />except for the period of DCP failure, which is poor, and the days of December 4, 2006 and March 13, 2007, <br />which are estimated and fair. The station is operated on a seasonal basis. Station operated and record <br />developed by Mike Wild. <br /> <br />RATING TABLE.--TARTARCO02 USED FROM 01-OCT-2006 TO 03-DEC-2006 <br /> TARTARCO02 USED FROM 14-MAR-2007 TO 30-SEP-2007 <br /> <br /> DISCHARGE, IN CFS, WATER YEAR OCTOBER 2006 TO SEPTEMBER 2007 <br /> MEAN VALUES <br /> <br /> DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP <br /> <br /> 1 26 36 14 --- --- --- 32 47 198 151 72 49 <br /> 2 25 32 13 --- --- --- 33 60 194 138 82 46 <br /> 3 25 28 13 --- --- --- 36 82 192 133 171 44 <br /> 4 26 32 10 --- --- --- 39 90 203 129 145 45 <br /> 5 27 32 --- --- --- --- 40 90 220 128 130 51 <br /> 6 27 31 --- --- --- --- 41 90 235 127 127 52 <br /> 7 27 32 --- --- --- --- 40 90 233 126 129 48 <br /> 8 27 34 --- --- --- --- 39 90 224 124 119 43 <br /> 9 29 34 --- --- --- --- 39 90 210 119 101 40 <br /> 10 33 33 --- --- --- --- 40 90 198 113 81 38 <br /> 11 36 26 --- --- --- --- 38 88 192 110 69 36 <br /> 12 35 23 --- --- --- --- 30 90 199 110 62 34 <br /> 13 33 22 --- --- --- 20 29 97 224 116 60 32 <br /> 14 31 20 --- --- --- 23 29 115 230 114 59 31 <br /> 15 32 20 --- --- --- 39 29 132 221 101 59 30 <br /> 16 34 20 --- --- --- 76 33 152 214 90 66 30 <br /> 17 34 21 --- --- --- 87 40 174 222 86 73 31 <br /> 18 35 23 --- --- --- 82 47 208 227 90 90 36 <br /> 19 33 23 --- --- --- 80 53 214 222 100 96 37 <br /> 20 34 22 --- --- --- 78 47 228 214 110 84 34 <br /> 21 38 20 --- --- --- 69 41 275 213 118 70 31 <br /> 22 41 20 --- --- --- 70 38 303 209 118 58 29 <br /> 23 37 21 --- --- --- 65 35 303 206 107 52 31 <br /> 24 35 20 --- --- --- 64 37 277 200 94 49 35 <br /> 25 37 20 --- --- --- 51 39 267 188 87 50 37 <br /> 26 41 19 --- --- --- 52 39 234 179 87 46 37 <br /> 27 32 17 --- --- --- 58 39 205 180 91 44 37 <br /> 28 28 15 --- --- --- 54 38 194 179 99 46 36 <br /> 29 31 15 --- --- --- 48 38 198 172 118 55 37 <br /> 30 35 15 --- --- --- 37 41 208 162 107 59 37 <br /> 31 37 --- --- --- --- 33 --- 209 --- 86 53 --- <br /> <br />TOTAL 1001 726 50 --- --- 1086 1139 4990 6160 3427 2457 1134 <br />MEAN 32.3 24.2 12.5 --- --- 57.2 38.0 161 205 111 79.3 37.8 <br />AC-FT 1990 1440 99 --- --- 2150 2260 9900 12220 6800 4870 2250 <br />MAX 41 36 14 --- --- 87 53 303 235 151 171 52 <br />MIN 25 15 10 --- --- 20 29 47 162 86 44 29 <br /> <br />CAL YR 2006 TOTAL 15026 MEAN 55 MAX 228 MIN 10 AC-FT 29800 (PARTIAL YEAR RECORD) <br />WTR YR 2007 TOTAL 22170 MEAN 83 MAX 303 MIN 10 AC-FT 43970 (PARTIAL YEAR RECORD) <br /> <br />MAX DISCH: 315 CFS AT 03:15 ON May. 23, 2007 GH 4.03 FT. SHIFT -0.22 FT. <br />MAX GH: 4.03 FT. AT 03:15 ON May. 23, 2007 <br /> <br />FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD.