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21 <br /> <br />PLATTE RIVER BASIN <br /> <br />NORTH ST. VRAIN CREEK AT TOWN OF LYONS DIVERSION <br /> <br />LOCATION.--lat. 40º14’55”, long 105º17’40” <br /> <br />DRAINAGE AREA AND PERIOD OF RECORD.--N/A, Established station on April 15, 1997. <br /> <br />GAGE.--Graphic water stage recorder and 8210 DCP and SDI shaft encoder in 36-inch concrete shelter and well. <br /> <br />REMARKS.--Record is complete and reliable except for the following periods: Nov. 15-25, 1997 when ice was in <br />well; Dec. 5, 1997-Apr. 6, 1998 when station was closed for winter period. Apr. 9, 18, 1998 when DCP <br />was missing some data. The record is good, except for periods of no gage-height record, which is fair <br />to poor. Station maintained and record developed by Fred Renner. <br /> <br />RATING TABLE.--LYODIVCO01 USED FROM 01-OCT-1997 TO 30-SEP-1998 <br /> <br />DISCHARGE, IN CFS, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 <br /> MEAN VALUES <br /> <br /> DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP <br /> <br /> 1 35 13 11 --- --- --- --- 139 247 250 158 45 <br /> 2 34 12 12 --- --- --- --- 130 262 249 142 46 <br /> 3 31 13 11 --- --- --- --- 124 292 249 128 42 <br /> 4 31 13 11 --- --- --- --- 136 315 241 134 38 <br /> 5 26 12 11 --- --- --- --- 146 271 224 202 35 <br /> 6 24 11 --- --- --- --- 25 145 217 213 177 32 <br /> 7 23 11 --- --- --- --- 25 144 188 207 148 31 <br /> 8 26 11 --- --- --- --- 24 139 172 179 131 31 <br /> 9 17 12 --- --- --- --- 24 122 166 169 120 34 <br /> 10 19 12 --- --- --- --- 23 121 165 162 122 32 <br /> 11 20 12 --- --- --- --- 22 122 168 228 136 31 <br /> 12 19 11 --- --- --- --- 21 122 170 217 134 30 <br /> 13 18 11 --- --- --- --- 21 122 196 179 119 34 <br /> 14 15 11 --- --- --- --- 23 127 196 152 109 42 <br /> 15 14 11 --- --- --- --- 27 148 193 141 106 41 <br /> 16 15 11 --- --- --- --- 31 143 173 125 94 35 <br /> 17 15 10 --- --- --- --- 32 142 188 118 87 31 <br /> 18 14 10 --- --- --- --- 40 134 184 114 84 28 <br /> 19 13 10 --- --- --- --- 45 126 165 112 83 23 <br /> 20 12 10 --- --- --- --- 49 169 180 108 78 19 <br /> 21 13 9.0 --- --- --- --- 51 228 215 107 75 20 <br /> 22 13 9.0 --- --- --- --- 52 253 241 117 73 20 <br /> 23 13 9.0 --- --- --- --- 59 237 258 126 69 16 <br /> 24 14 9.0 --- --- --- --- 97 198 240 122 63 14 <br /> 25 16 9.0 --- --- --- --- 134 171 216 166 62 11 <br /> 26 12 9.1 --- --- --- --- 167 167 222 213 60 9.1 <br /> 27 14 9.9 --- --- --- --- 135 166 243 216 58 11 <br /> 28 17 11 --- --- --- --- 131 196 263 183 57 15 <br /> 29 17 11 --- --- --- --- 134 247 266 178 51 14 <br /> 30 18 11 --- --- --- --- 148 244 261 178 46 14 <br /> 31 20 --- --- --- --- --- --- 227 --- 177 43 --- <br /> <br /> TOTAL 588 324.0 5035 6533 5420 3149 824.1 <br /> MEAN 19.0 10.8 162 218 175 102 27.5 <br /> AC-FT 1170 643 9990 12960 10750 6250 1630 <br /> MAX 35 13 253 315 250 202 46 <br /> MIN 12 9.0 121 165 107 43 9.1 <br /> <br /> CAL YR 1997 TOTAL 34074.0 MEAN 93.4 MAX 738 MIN 9.0 AC-FT 67590 <br /> WTR YR 1998 TOTAL 21873.1 MEAN 59.9 MAX 315 MIN 9.0 AC-FT 43390 <br /> <br /> MAX DISCH 333 CFS AT 1030 04-JUN-1998 GH 2.40 FT. SHIFT -0.01 FT. MAX GH 2.40 FT. AT 1030 04-JUN-1998 <br /> <br /> FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD. <br /> <br /> <br />0 <br />50 <br />100 <br />150 <br />200 <br />250 <br />300 <br />350 <br />OctNovDecJanFebMarAprMayJunJulAugSep