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USGS Surface-Water 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 12389500 Thompson River near Thompson Falls MT


Sanders County, Montana
Hydrologic Unit Code 17010213
Latitude  47°35'30.69", Longitude 115°13'46.33" NAD83
Drainage area 638  square miles
Gage datum 2,429.97 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 1956-10-01 -> 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
1 171 216 261 516 1,010 1,300 561 263 194 173 176 211
2 173 212 261 528 1,020 1,280 542 261 194 172 177 212
3 174 208 266 538 1,060 1,280 525 256 191 172 178 215
4 172 207 268 548 1,080 1,270 508 252 189 172 181 218
5 172 212 267 561 1,120 1,230 491 250 188 170 181 217
6 173 211 273 595 1,160 1,200 476 245 187 170 181 207
7 178 212 277 637 1,190 1,180 462 243 186 169 187 198
8 185 221 280 654 1,200 1,160 446 239 185 170 187 192
9 185 268 282 674 1,200 1,160 433 236 184 170 184 191
10 188 269 293 692 1,220 1,080 422 233 183 170 184 191
11 184 250 298 699 1,240 1,020 410 230 182 171 185 192
12 180 239 305 705 1,250 999 398 228 182 175 191 194
13 183 231 318 710 1,260 992 390 226 181 175 196 195
14 186 229 324 733 1,270 985 383 223 180 173 192 200
15 199 226 341 745 1,300 957 371 222 181 173 187 199
16 243 231 372 737 1,350 940 361 221 181 172 187 193
17 243 234 380 735 1,390 923 352 218 179 171 186 190
18 227 231 384 746 1,400 896 344 215 180 170 186 188
19 215 233 409 754 1,390 859 336 213 181 170 184 185
20 210 248 404 793 1,380 832 329 212 181 169 183 182
21 204 269 400 846 1,370 803 321 211 179 169 186 181
22 200 267 397 871 1,390 779 314 210 179 171 187 182
23 197 258 405 894 1,390 752 307 208 178 172 190 183
24 193 250 411 958 1,380 725 301 206 176 171 202 182
25 196 250 415 987 1,390 699 297 204 175 172 216 180
26 192 251 426 967 1,400 670 291 203 174 174 214 183
27 190 252 438 957 1,400 643 285 202 173 174 203 187
28 189 256 446 972 1,380 619 279 200 173 175 195 183
29 188 301 455 977 1,350 601 274 197 172 175 198 176
30 195   469 990 1,340 583 270 196 172 174 210 175
31 214   497   1,330   266 195   175   173