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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 06308500 Tongue River at Miles City, MT


Custer County, Montana
Hydrologic Unit Code 10090102
Latitude  46°23'04.54", Longitude 105°50'43.88" NAD83
Drainage area 5,405  square miles
Gage datum 2,351.40 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 1937-10-01 -> 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
1 165 187 334 450 423 1,240 971 197 193 208 251 220
2 165 183 326 446 408 1,250 897 188 210 238 250 221
3 166 182 387 472 420 1,290 885 197 202 262 253 216
4 164 186 427 486 431 1,300 930 189 197 227 257 213
5 164 191 436 462 426 1,290 834 180 180 223 260 204
6 166 216 479 418 469 1,320 721 175 179 232 260 202
7 168 217 464 409 525 1,340 661 172 178 233 266 193
8 168 216 446 402 493 1,430 608 165 183 227 267 190
9 170 209 422 401 531 1,450 574 160 189 224 267 189
10 173 201 464 409 552 1,400 544 156 189 231 261 185
11 173 201 457 421 602 1,390 494 153 184 225 257 189
12 186 212 500 419 550 1,410 489 165 188 226 251 184
13 194 229 524 418 580 1,440 455 171 193 226 253 182
14 187 246 499 407 623 1,490 413 176 197 227 257 179
15 181 322 488 407 581 1,580 387 168 216 228 255 180
16 196 332 484 400 602 1,420 359 161 221 230 254 177
17 197 328 496 397 615 1,400 337 176 199 234 258 177
18 189 315 531 397 671 1,430 320 174 190 236 257 175
19 190 316 656 409 701 1,420 324 163 195 269 254 174
20 193 298 705 430 731 1,390 322 157 199 239 252 175
21 192 292 731 419 853 1,390 290 163 197 248 245 176
22 195 279 687 404 881 1,370 276 172 196 266 231 175
23 200 270 628 394 888 1,320 263 188 198 254 223 173
24 206 281 553 430 916 1,290 251 218 197 241 226 172
25 215 300 511 398 971 1,270 247 193 227 235 225 173
26 212 322 488 389 961 1,210 239 178 219 234 221 174
27 205 343 466 384 991 1,230 267 170 207 239 223 171
28 198 333 455 401 1,000 1,180 303 177 206 247 220 170
29 198 381 428 426 1,040 1,120 258 181 206 246 221 168
30 195   466 435 1,120 1,060 233 197 202 249 218 167
31 193   466   1,220   211 181   248   167