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USGS Daily Statistics for Colorado

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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 99 110 130 291 791 330 173 89 164 152 129
2 107 97 111 124 300 791 392 144 94 176 151 128
3 110 110 112 122 381 802 321 134 91 169 149 128
4 110 118 106 126 374 868 269 119 92 168 150 130
5 108 112 102 126 360 945 294 111 106 159 158 126
6 105 108 102 121 361 1,000 340 107 104 151 145 123
7 103 105 108 112 370 1,020 305 118 98 150 147 123
8 101 103 123 106 425 1,060 296 139 110 147 146 122
9 105 103 118 102 641 1,070 319 120 126 153 154 123
10 106 102 111 105 569 1,010 280 112 128 170 150 119
11 103 101 107 111 624 974 234 109 136 155 149 120
12 103 102 104 114 660 1,080 210 104 121 147 143 120
13 98 105 115 119 535 1,130 182 100 106 148 136 119
14 95 110 148 124 494 1,070 160 109 103 147 135 118
15 95 106 140 128 480 940 166 109 123 147 135 119
16 96 103 135 158 435 856 165 127 102 145 134 119
17 100 103 135 221 391 879 172 135 98 142 142 118
18 100 102 133 202 522 909 136 105 95 139 137 117
19 100 102 151 179 699 890 126 118 331 138 134 118
20 99 102 147 190 679 851 125 119 282 145 133 114
21 100 102 131 184 669 790 144 113 258 165 132 113
22 100 109 132 212 651 791 159 107 256 174 129 111
23 102 113 145 219 670 695 134 100 290 180 130 109
24 99 115 142 225 670 592 134 98 258 171 129 112
25 99 116 152 228 728 507 122 99 213 172 130 111
26 98 115 147 253 762 499 138 110 192 172 128 113
27 98 114 136 345 733 450 139 106 174 166 130 111
28 98 111 136 375 700 414 125 108 184 173 130 113
29 99 118 155 320 693 381 109 100 170 169 132 115
30 100   183 300 690 335 134 99 170 160 132 111
31 100   135   759   194 94   154   110