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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 06730500 BOULDER CREEK AT MOUTH NEAR LONGMONT, CO


Weld County, Colorado
Hydrologic Unit Code 10190005
Latitude  40°08'19.6", Longitude 105°01'12.8" NAD83
Drainage area 447  square miles
Gage datum 4,860 feet above NGVD29
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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 1926-10-01 -> 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 52 52 51 54 173 202 119 30 11 30 45 50
2 50 52 51 53 170 191 113 22 13 32 45 51
3 51 52 50 57 174 189 100 34 44 31 45 51
4 50 51 50 57 172 196 86 34 35 31 45 50
5 50 50 52 58 158 215 78 40 28 32 47 49
6 50 50 55 56 154 203 70 38 21 35 45 49
7 49 50 53 54 152 224 62 31 18 36 45 48
8 51 49 54 53 156 227 67 26 18 36 46 48
9 51 49 54 53 175 255 72 23 20 37 46 50
10 51 48 52 57 171 244 73 25 23 42 47 50
11 50 48 52 60 181 227 67 23 24 40 47 52
12 50 48 51 63 184 260 63 22 78 37 46 50
13 51 49 53 66 166 272 59 19 149 37 45 50
14 51 50 56 70 154 253 53 17 92 40 46 50
15 50 50 54 68 152 239 46 18 80 44 48 49
16 49 50 54 72 151 231 37 23 64 42 47 50
17 50 50 55 85 174 232 40 27 50 42 48 50
18 50 50 55 90 194 258 33 19 46 43 49 50
19 50 51 57 93 219 256 30 19 41 40 49 50
20 50 51 58 101 202 248 31 18 35 37 48 49
21 51 51 55 99 190 230 33 17 31 39 48 49
22 51 52 55 109 188 243 32 13 31 42 48 49
23 51 52 55 124 196 232 31 11 34 42 48 49
24 51 53 58 150 206 199 36 14 33 42 48 49
25 50 54 59 155 197 177 25 13 29 41 48 49
26 50 54 57 149 190 184 25 11 26 42 49 48
27 50 53 55 148 182 178 22 11 24 41 48 49
28 50 52 56 147 184 160 24 11 29 42 50 49
29 51 54 58 143 196 145 28 9.9 27 41 49 51
30 51   61 156 209 133 29 11 28 39 49 51
31 52   58   212   39 12   41   51