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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 1,060 412 377 308 288 190
2 135 148 169 143 330 1,330 989 440 371 303 288 185
3 135 146 168 143 348 1,520 946 417 367 300 288 190
4 125 145 165 143 367 1,650 907 406 371 289 287 193
5 125 144 162 144 374 1,740 879 510 381 282 287 203
6 127 144 160 145 404 1,780 977 437 362 279 286 202
7 132 148 158 149 422 1,850 960 445 357 276 286 194
8 131 136 155 155 434 1,930 894 438 353 272 290 198
9 132 140 155 158 455 1,940 871 427 362 271 291 192
10 128 143 151 154 467 1,910 832 423 380 272 287 188
11 130 141 148 152 487 1,960 796 425 365 269 289 188
12 129 146 144 150 501 2,080 749 421 361 276 289 179
13 131 148 141 147 539 2,270 693 422 365 279 290 179
14 131 150 138 147 581 2,300 660 434 363 272 292 182
15 135 148 136 150 619 2,220 643 410 362 269 288 184
16 151 144 135 154 664 2,080 638 410 366 268 284 179
17 160 132 128 169 705 1,960 609 409 368 266 278 185
18 154 128 127 193 727 1,880 577 404 365 262 267 172
19 145 126 127 216 791 1,830 551 402 363 264 253 175
20 140 140 124 230 900 1,780 528 403 356 267 234 169
21 140 151 121 248 978 1,790 514 403 355 267 216 174
22 146 152 121 260 1,010 1,760 509 397 379 268 217 178
23 151 155 120 270 1,040 1,610 483 405 398 270 214 169
24 151 165 121 282 1,080 1,490 459 400 353 272 207 169
25 149 205 122 288 1,120 1,380 488 396 343 270 194 143
26 144 210 120 291 1,180 1,450 456 405 344 284 199 131
27 145 182 119 293 1,220 1,520 431 412 343 285 207 141
28 144 169 119 300 1,240 1,400 428 403 342 288 213 143
29 146 213 128 306 1,260 1,270 437 396 311 288 206 148
30 144   141 308 1,220 1,150 449 385 310 288 198 150
31 144   143   1,240   442 384   288   143