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USGS Surface-Water Daily Statistics for Montana

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Questions or concerns about USGS streamflow data in Montana and Wyoming can be directed to Kirk Miller (kmiller@usgs.gov; 307-775-9168).

Updated June 11, 2020 - USGS water-resources monitoring activities will be restored at the following sites:
  • 12323600 Silver Bow Creek at Opportunity, Montana (POR: 31 years)
  • 12323750 Silver Bow Creek at Warm Springs, Montana (POR: 35 years)

Updated May 12, 2020 - USGS water-resources monitoring activities were suspended effective June 1, 2020 at the following site:
  • 06088500 Muddy Creek near Vaughn, Montana (POR: 82 years)
USGS monitoring activities at this site was funded by our partner and USGS Cooperative Matching Funds (06088500). Lack of partner funding for this site resulted in suspension of all USGS monitoring activities. Efforts are ongoing to secure funding for future monitoring. Historical data will continue to be available from USGS.

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 -> 2019-09-30)

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
1 225 221 230 263 321 562 401 113 138 199 245 239
2 222 221 231 264 318 568 384 111 138 201 247 241
3 221 216 233 265 321 568 372 107 135 203 251 242
4 219 214 236 265 325 568 365 104 136 209 254 241
5 225 213 236 267 322 569 346 105 138 217 254 233
6 223 214 252 275 319 603 329 102 142 219 257 230
7 225 221 263 277 329 619 313 101 145 218 257 224
8 231 233 258 280 331 612 299 100 149 223 260 221
9 225 237 266 282 336 597 286 97 155 223 261 220
10 221 227 275 280 345 578 285 96 157 224 255 221
11 218 223 279 279 353 576 278 98 159 228 254 223
12 215 224 281 282 345 560 263 102 164 229 255 224
13 216 234 279 282 344 552 255 101 165 230 255 226
14 216 240 275 285 346 561 249 101 165 233 252 223
15 216 243 273 283 352 551 237 101 168 236 248 222
16 213 246 273 276 370 563 220 104 169 240 249 218
17 217 249 273 273 397 583 208 105 170 242 251 220
18 222 243 269 278 416 577 202 105 172 242 253 214
19 225 242 264 286 426 569 193 107 175 242 251 211
20 222 247 260 292 434 563 189 105 181 243 252 213
21 217 255 259 298 437 555 177 109 182 245 249 212
22 215 248 263 301 476 550 165 113 181 247 247 213
23 216 242 263 310 494 539 157 120 183 246 242 210
24 217 257 262 320 498 519 147 124 183 246 240 209
25 218 260 263 324 517 492 140 126 184 247 238 208
26 218 240 269 322 535 474 135 127 184 249 237 206
27 224 232 274 320 543 458 134 128 189 251 236 206
28 217 231 268 316 550 436 129 127 193 249 238 208
29 214 241 263 315 551 419 127 127 194 250 240 210
30 218   261 319 557 406 120 128 196 250 238 213
31 223   262   562   116 132   248   216