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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 12324400 Clark Fork ab Little Blackfoot R nr Garrison MT


Powell County, Montana
Hydrologic Unit Code 17010201
Latitude  46°30'39.28", Longitude 112°47'22.87" NAD83
Drainage area 1,130  square miles
Gage datum 4,350 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 2008-10-01 -> 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
1 248 244 244 325 395 763 598 160 153 214 297 282
2 252 239 250 324 388 778 566 158 149 221 301 281
3 250 245 255 322 382 782 529 152 147 226 308 278
4 245 251 263 324 384 765 514 146 147 231 309 277
5 245 256 266 336 388 772 495 144 151 243 308 268
6 254 256 293 340 394 811 471 148 154 246 306 261
7 262 247 288 339 418 844 448 153 157 245 301 253
8 260 246 283 355 427 887 430 154 158 247 299 248
9 261 255 287 359 428 913 406 150 169 251 296 249
10 255 249 309 362 441 873 385 146 178 255 296 251
11 248 245 311 359 433 831 370 148 177 257 294 258
12 249 245 302 355 423 790 350 150 173 261 288 265
13 246 257 298 356 423 803 332 148 171 266 287 267
14 242 259 296 358 423 818 338 150 170 271 291 262
15 238 265 301 350 430 782 339 152 174 273 291 261
16 239 270 316 338 460 770 320 153 180 277 292 255
17 250 265 320 333 506 825 302 151 182 282 293 259
18 261 263 318 326 545 853 286 147 181 281 292 264
19 265 257 316 325 559 860 265 145 184 282 289 270
20 255 254 313 333 592 841 248 141 189 288 289 268
21 249 246 307 343 621 820 233 142 190 287 286 266
22 256 240 314 357 613 786 219 144 190 291 279 258
23 254 241 324 373 622 741 207 150 190 292 282 254
24 252 244 320 382 645 703 199 165 190 292 281 258
25 261 239 319 392 692 683 189 164 188 295 282 259
26 262 239 333 399 698 665 179 163 190 296 275 261
27 258 236 342 407 720 637 179 159 192 298 281 263
28 253 236 340 400 723 626 179 156 195 297 293 265
29 249 283 330 390 726 617 173 153 199 295 289 261
30 253   323 391 730 617 163 151 208 298 282 256
31 248   324   737   156 151   300   255