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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 12324200 Clark Fork at Deer Lodge MT


Powell County, Montana
Hydrologic Unit Code 17010201
Latitude  46°23'51.54", Longitude 112°44'33.14" NAD83
Drainage area 1,001  square miles
Gage datum 4,502.2 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 1978-10-01 -> 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
1 227 222 231 263 320 566 416 114 137 201 251 238
2 224 221 232 264 319 570 399 112 137 205 253 240
3 222 217 234 265 323 569 383 108 135 207 258 241
4 220 216 236 264 329 571 376 105 136 212 260 242
5 224 216 236 266 326 575 358 106 138 219 260 235
6 223 217 252 273 325 611 340 105 142 221 263 233
7 226 222 261 275 334 629 323 104 145 220 263 228
8 231 232 257 278 336 629 308 103 149 224 264 225
9 226 234 264 280 340 625 295 100 154 224 265 224
10 221 226 273 279 346 597 293 99 156 226 259 224
11 218 221 276 280 351 594 287 100 158 230 258 226
12 215 222 278 282 343 585 269 103 163 232 258 227
13 217 231 276 282 342 579 259 102 163 234 260 228
14 216 238 271 284 343 580 252 103 163 237 257 226
15 215 240 270 282 348 564 239 101 167 241 253 224
16 212 243 271 275 367 569 223 104 167 245 254 220
17 217 245 271 272 394 590 210 105 168 247 255 222
18 222 241 267 276 411 593 203 106 170 248 257 216
19 225 240 264 283 424 588 194 108 173 249 256 214
20 221 245 261 289 438 580 190 107 179 250 256 216
21 217 252 260 294 448 568 177 112 181 250 252 216
22 217 243 263 297 483 557 165 117 180 252 249 216
23 218 238 263 305 497 542 157 122 182 252 245 213
24 217 253 262 315 497 522 148 125 182 251 243 211
25 220 255 264 320 513 495 141 128 183 252 242 211
26 219 239 268 319 530 474 136 130 183 254 241 210
27 225 231 272 315 538 459 134 131 187 256 240 211
28 219 230 267 312 545 442 130 129 192 255 241 212
29 215 244 263 310 548 432 128 129 193 255 241 212
30 219   261 316 555 425 122 129 196 255 238 214
31 223   262   562   117 132   253   217