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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 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 54 174 203 119 30 11 30 45 50
2 50 53 51 53 172 191 113 22 13 32 45 50
3 51 52 50 57 175 187 100 34 44 31 45 51
4 50 51 50 58 174 193 86 34 35 31 44 50
5 50 51 52 58 160 214 78 40 28 32 46 49
6 51 50 55 56 155 202 70 38 21 35 45 49
7 50 50 53 54 151 224 62 31 18 36 44 48
8 51 49 54 53 156 227 67 26 18 36 45 48
9 52 50 54 54 176 255 72 23 20 37 45 50
10 51 49 53 57 173 243 73 25 23 42 46 50
11 50 49 52 60 182 226 67 23 24 40 46 52
12 50 49 51 63 185 260 63 22 78 37 46 50
13 51 50 53 66 166 270 59 19 149 37 45 50
14 51 51 56 71 153 249 53 17 92 40 46 50
15 51 50 54 69 151 235 46 18 80 44 48 49
16 50 50 55 73 151 229 37 23 64 42 47 50
17 50 50 55 86 175 230 40 27 50 42 48 50
18 50 50 56 91 195 257 33 19 46 43 49 50
19 51 51 58 93 221 257 30 19 41 40 49 50
20 50 51 58 101 204 249 31 18 35 37 48 49
21 51 51 55 100 192 231 33 17 31 40 48 49
22 51 52 55 110 190 244 32 13 31 42 48 49
23 51 52 56 126 199 234 31 11 34 43 48 49
24 51 54 59 151 209 200 36 14 33 42 48 49
25 50 54 60 157 200 177 25 13 29 41 48 49
26 50 54 57 150 191 183 25 11 26 42 49 48
27 50 53 55 149 183 179 22 11 24 41 48 49
28 51 52 56 148 186 161 24 11 29 42 49 49
29 51 54 58 144 197 147 28 9.9 27 41 49 51
30 51   56 157 211 133 29 11 28 39 49 51
31 53   58   214   39 12   41   51