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22 <br />PLATTE RIVER BASIN <br /> <br />06729450 SOUTH BOULDER CREEK BELOW GROSS RESERVOIR NEAR COAL CREEK, CO <br /> <br />LOCATION.--Lat 39°56'19", long 105°20'55", SW¼ sec. 21, T.1 S., R.71 W., Boulder County. Measures releases <br />from Gross Reservoir; which is filled by South Boulder Creek and transmountain diversions from <br />Moffat Tunnel. <br /> <br />DRAINAGE AREA.--N/A <br /> <br />GAGE.--Graphic water stage recorder and satellite monitoring DCP with shaft encoder in timber shelter and <br />concrete well at 25' Parshall flume with supplemental outside staff. The primary reference is an <br />electric tape gage. The DCP, updated to high data rate in 2002, is the primary record with chart <br />backup. Station is owned and maintained by Denver Water Board personnel. <br /> <br />REMARKS.--Primary record is hourly DCP data with chart back up. The record is complete and reliable. The <br />record is good except for the entire month of February and the days of March 1, 2 and 9, 2004, which <br />are considered fair due to the fact, flows were below the minimum 15 cfs for a 25’ Parshall Flume’s <br />accuracy limit. Station maintained and record developed by Lee Cunning. <br /> <br />RATING TABLE--STD25FTPF USED FROM 01-OCT-2003 TO 30-SEP-2004 <br /> <br /> DISCHARGE, IN CFS, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 <br /> MEAN VALUES <br /> <br /> DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP <br /> <br /> 1 17 61 108 83 6.1 6.2 130 187 190 258 136 96 <br /> 2 61 61 108 83 6.1 6.6 113 186 177 258 136 96 <br /> 3 86 61 108 83 6.1 77 102 186 172 258 136 96 <br /> 4 86 61 108 97 6.1 105 101 187 172 258 136 96 <br /> 5 86 61 108 119 6.1 105 103 187 178 233 136 96 <br /> 6 87 61 107 134 6.1 105 105 187 183 214 137 96 <br /> 7 87 61 107 164 6.1 105 105 220 196 213 136 96 <br /> 8 104 61 108 160 6.1 66 105 239 231 208 141 96 <br /> 9 116 61 108 122 6.1 6.4 112 241 264 205 143 96 <br /> 10 115 61 108 108 6.1 77 116 241 304 202 143 96 <br /> 11 115 61 108 108 6.1 104 116 265 323 197 142 96 <br /> 12 115 61 93 108 6.2 104 115 286 276 197 142 96 <br /> 13 117 61 83 93 6.1 104 115 275 213 195 142 96 <br /> 14 117 61 83 84 6.1 104 124 266 190 195 144 96 <br /> 15 117 61 83 85 6.1 104 130 266 189 194 144 96 <br /> 16 116 61 83 86 6.1 155 148 266 192 193 144 96 <br /> 17 114 61 83 85 6.1 193 160 242 193 192 144 75 <br /> 18 113 61 83 84 6.1 193 160 220 194 193 145 16 <br /> 19 113 61 83 84 6.6 192 160 215 203 192 162 15 <br /> 20 85 61 83 84 6.6 192 160 231 207 192 177 15 <br /> 21 61 83 83 84 6.5 191 160 266 207 183 179 16 <br /> 22 61 110 83 84 6.4 155 176 289 216 179 179 16 <br /> 23 61 107 83 84 6.1 130 187 286 236 179 179 15 <br /> 24 61 107 83 84 6.1 130 187 281 245 177 149 18 <br /> 25 61 108 83 84 6.1 130 187 272 245 178 130 19 <br /> 26 61 108 83 191 6.1 130 187 269 245 169 112 19 <br /> 27 62 108 83 287 6.2 130 187 231 246 164 101 19 <br /> 28 61 108 83 287 6.3 130 187 207 247 164 100 22 <br /> 29 61 107 65 285 6.3 130 187 207 254 164 100 25 <br /> 30 61 107 82 209 --- 130 187 209 258 152 98 25 <br /> 31 61 --- 83 58 --- 130 --- 201 --- 139 96 --- <br /> <br />TOTAL 2639 2273 2837 3791 179.2 3620.2 4312 7311 6646 6095 4289 1851 <br />MEAN 85 76 92 122 6.2 117 144 236 222 197 138 62 <br />AC-FT 5230 4510 5630 7520 355 7180 8550 14500 13180 12090 8510 3670 <br />MAX 117 110 108 287 6.6 193 187 289 323 258 179 96 <br />MIN 17 61 65 58 6.1 6.2 101 186 172 139 96 15 <br /> <br />WTR YR 2004 TOTAL 45843.4 MEAN 125 MAX 323 MIN 6.1 AC-FT 90930 <br /> <br />MAX DISCH: 327 CFS AT 03:00 ON Jun. 12, 2004 GH 2.17 FT. SHIFT 0 FT. <br />MAX GH: 2.17 FT. AT 03:00 ON Jun. 12, 2004 <br /> <br />F <br /> <br />OR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD. <br /> <br />0 <br />100 <br />200 <br />300 <br />400 <br />Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep