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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 06307662 Tongue River at Ashland, MT


Rosebud County, Montana
Hydrologic Unit Code 10090102
Latitude  45°35'51.9", Longitude 106°16'29.8" NAD83
Drainage area 2,900  square miles
Gage datum 2,903 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 2020-10-01 -> 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
1 139 146 171 143 320 1,300 1,280 427 377 308 288 190
2 135 148 169 143 330 1,330 1,180 426 371 303 288 185
3 135 146 168 143 348 1,520 1,130 428 367 300 288 190
4 125 145 165 143 367 1,650 1,080 425 371 289 287 193
5 125 144 162 144 374 1,740 1,030 433 381 282 287 203
6 127 144 160 145 404 1,780 1,070 437 362 279 286 202
7 132 148 158 149 422 1,850 1,130 445 357 276 286 194
8 131 136 155 155 434 1,930 1,060 438 353 272 290 198
9 132 140 155 158 455 1,940 1,030 427 362 271 291 192
10 128 143 151 154 467 1,910 981 423 380 272 287 188
11 130 141 148 152 487 2,150 939 425 365 269 289 188
12 129 146 144 150 501 2,310 878 421 361 276 289 179
13 131 148 141 147 539 2,570 805 422 365 279 290 179
14 131 150 138 147 581 2,600 762 434 363 272 292 182
15 135 148 136 150 619 2,480 741 410 362 269 288 184
16 151 144 135 154 664 2,310 715 410 366 268 284 179
17 160 132 128 169 705 2,140 677 409 368 266 278 185
18 154 128 127 193 727 2,070 647 404 365 262 267 172
19 145 126 127 216 791 2,030 614 402 363 264 253 175
20 140 140 124 230 900 1,980 579 403 356 267 234 169
21 140 151 121 248 978 2,030 550 403 355 267 216 174
22 146 152 121 260 1,010 2,010 522 397 379 268 217 178
23 151 155 120 270 1,040 1,860 503 405 398 270 214 169
24 151 165 121 282 1,080 1,730 484 400 353 272 207 169
25 149 205 122 288 1,120 1,620 526 396 343 270 194 143
26 144 210 120 291 1,180 1,730 481 405 344 284 199 131
27 145 182 119 293 1,220 1,830 451 412 343 285 207 141
28 144 169 119 300 1,240 1,680 447 403 342 288 213 143
29 146 213 128 306 1,260 1,520 446 396 311 288 206 148
30 144   141 308 1,220 1,390 434 385 310 288 198 150
31 144   143   1,240   433 384   288   143