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USGS Daily Statistics for the Nation

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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 -> 2026-09-30)

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 1,060 412 354 292 276 190
2 135 148 169 143 330 1,330 989 440 349 288 276 185
3 135 146 168 143 348 1,520 946 417 346 285 276 190
4 125 145 165 143 367 1,650 907 406 349 277 275 193
5 125 144 162 144 374 1,740 879 510 358 278 276 203
6 127 144 160 145 404 1,780 977 425 342 273 275 202
7 132 148 158 149 422 1,850 960 413 338 264 275 194
8 131 136 155 155 434 1,930 894 405 335 260 278 198
9 132 140 155 158 455 1,940 871 395 343 259 278 192
10 128 143 151 154 467 1,910 832 392 355 259 273 188
11 130 141 148 152 487 1,960 796 394 341 257 272 188
12 129 146 144 150 501 2,080 749 389 336 280 272 179
13 131 148 141 147 539 2,270 693 392 342 286 272 179
14 131 150 138 147 581 2,300 660 399 340 265 274 182
15 135 148 136 150 619 2,220 643 379 338 262 270 184
16 151 144 135 154 664 2,080 638 378 341 268 267 179
17 160 132 128 169 705 1,960 609 381 344 275 262 185
18 154 128 127 193 727 1,880 577 376 345 261 253 172
19 145 126 127 216 791 1,830 551 374 343 258 253 175
20 140 140 124 230 900 1,780 528 376 338 260 234 169
21 140 151 121 248 978 1,790 514 377 338 260 216 174
22 146 152 121 260 1,010 1,760 509 375 354 260 217 178
23 151 155 120 270 1,040 1,610 483 377 369 262 214 169
24 151 165 121 282 1,080 1,490 459 370 336 263 207 169
25 149 205 122 288 1,120 1,380 488 368 328 261 194 143
26 144 210 120 291 1,180 1,450 456 376 327 272 199 131
27 145 182 119 293 1,220 1,520 431 381 324 274 207 141
28 144 169 119 300 1,240 1,400 428 374 321 276 213 143
29 146 213 128 306 1,260 1,270 437 369 295 276 206 148
30 144   141 308 1,220 1,150 449 362 293 276 198 150
31 144   143   1,240   442 360   276   143