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USGS Daily Statistics for Montana

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Questions or concerns about USGS data and data products in Montana and Wyoming can be directed to the Wyoming-Montana Water Science Center Data Management Section.


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 06111800 Big Spring Cr at R&B Trading Post nr Lewistown MT


Fergus County, Montana
Hydrologic Unit Code 10040103
Latitude  47°05'16.2", Longitude 109°27'27.0" NAD83
Drainage area 191  square miles
Gage datum 3,843 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 2014-10-01 -> 2024-09-30)

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
1 154 158 162 177 225 216 175 135 144 161 163 159
2 154 158 162 174 223 260 171 135 141 161 164 159
3 154 157 163 172 217 298 170 135 140 167 166 159
4 154 156 166 174 212 321 172 135 141 175 166 159
5 154 156 165 177 207 320 171 136 143 173 164 158
6 154 157 166 178 209 300 168 137 143 166 163 156
7 154 161 172 181 216 286 171 137 143 163 162 157
8 154 163 168 182 221 283 169 136 144 163 161 158
9 153 165 166 185 234 291 165 136 146 164 162 158
10 153 188 164 190 226 278 161 135 146 162 163 158
11 154 171 163 203 220 257 168 135 145 162 161 158
12 153 162 166 206 219 245 162 136 147 163 161 157
13 153 161 166 192 227 242 159 136 148 163 161 157
14 154 160 170 184 223 226 154 135 147 164 162 156
15 153 160 182 182 219 209 152 137 148 163 161 157
16 153 162 188 180 222 201 150 136 151 163 162 155
17 153 165 176 180 231 196 149 138 151 163 162 156
18 154 162 171 184 233 197 149 141 150 161 162 156
19 154 160 172 189 218 197 146 143 152 161 162 156
20 154 161 174 187 214 192 144 146 154 162 162 156
21 154 159 183 190 217 191 144 147 159 162 161 156
22 154 158 225 196 214 194 143 146 162 164 161 156
23 155 158 236 198 210 188 144 146 161 164 161 155
24 155 159 222 201 210 198 142 146 157 163 161 156
25 156 163 207 211 207 196 141 149 155 163 160 155
26 158 164 201 218 217 182 142 150 154 163 160 154
27 161 159 188 228 237 177 144 147 155 162 160 155
28 162 159 177 236 251 173 144 147 157 162 160 156
29 164 169 177 230 226 191 142 144 157 162 159 155
30 161   179 226 212 185 139 144 158 162 158 154
31 159   180   208   137 144   165   154