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USGS Daily Statistics for the Nation

The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 06730525 ST VRAIN CR BLW BOULDER CR AT HWY 119 NR LONGMONT


Weld County, Colorado
Hydrologic Unit Code 10190005
Latitude  40°09'37.68", Longitude 105°00'28.57" NAD83
Drainage area 872  square miles
Gage datum 4,849 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 2012-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 108 99 110 130 291 822 349 183 89 164 152 129
2 107 97 111 124 300 819 417 150 94 176 151 128
3 110 110 112 122 381 807 342 139 91 169 149 128
4 110 118 106 126 374 877 286 124 92 168 150 130
5 108 112 102 126 360 981 313 116 106 159 158 126
6 105 108 102 121 361 1,040 364 112 104 151 145 123
7 103 105 108 112 370 1,070 327 118 98 150 147 123
8 101 103 123 106 425 1,120 318 139 110 147 146 122
9 105 103 118 102 688 1,120 342 120 126 153 154 123
10 106 102 111 105 611 1,060 302 112 128 170 150 119
11 103 101 107 111 670 1,020 250 109 136 155 149 120
12 103 102 104 114 699 1,130 216 104 121 147 143 120
13 98 105 115 119 560 1,160 191 100 106 148 136 119
14 95 110 148 124 513 1,070 168 109 103 147 135 118
15 95 106 140 128 490 942 175 109 123 147 135 119
16 96 103 135 158 459 866 174 127 102 145 134 119
17 100 103 135 221 415 899 154 135 98 142 142 118
18 100 102 133 202 558 935 133 105 95 139 137 117
19 100 102 151 179 750 932 124 118 331 138 134 118
20 99 102 147 190 732 894 128 119 282 145 133 114
21 100 102 131 184 725 832 149 113 258 165 132 113
22 100 109 132 212 706 840 166 107 256 174 129 111
23 102 113 145 219 725 742 138 100 290 180 130 109
24 99 115 142 225 723 629 139 98 258 171 129 112
25 99 116 152 228 777 530 126 99 213 172 130 111
26 98 115 147 253 793 513 143 110 192 172 128 113
27 98 114 136 345 770 475 144 106 174 166 130 111
28 98 111 136 375 742 438 131 108 184 173 130 113
29 99 118 155 320 715 405 114 100 170 169 132 115
30 100   183 300 722 353 140 99 170 160 132 111
31 100   135   789   205 94   154   110