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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 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 -> 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
1 225 220 231 262 314 554 411 113 136 199 249 237
2 222 220 231 263 313 558 394 111 135 202 251 238
3 221 215 234 263 316 555 379 107 133 204 256 240
4 219 214 236 265 321 556 371 104 134 210 259 240
5 223 214 235 267 319 559 353 105 137 216 259 234
6 222 215 251 273 318 593 336 103 140 218 261 232
7 226 220 260 274 327 610 319 103 143 218 261 227
8 229 230 256 277 328 611 304 102 147 221 262 225
9 224 232 263 279 332 607 291 99 152 222 263 224
10 220 224 271 277 338 581 289 97 154 223 258 224
11 217 219 275 277 343 586 282 99 156 228 256 225
12 213 220 276 280 336 577 265 102 161 230 257 226
13 215 229 275 280 336 572 255 101 161 232 258 227
14 215 235 270 282 337 572 249 102 162 235 255 225
15 213 237 269 280 342 557 236 101 165 239 251 223
16 211 241 270 273 360 561 220 103 166 243 253 219
17 216 243 269 270 386 582 207 104 167 245 254 221
18 220 239 266 273 403 585 200 105 169 245 255 216
19 223 239 262 280 415 580 191 107 172 246 254 213
20 218 243 260 285 428 571 187 106 178 248 254 216
21 214 250 259 290 437 559 175 110 179 248 251 215
22 214 242 262 293 470 548 163 115 178 250 248 215
23 216 238 262 300 485 533 155 120 180 249 244 212
24 215 254 261 309 485 514 147 124 180 249 242 211
25 218 256 263 314 500 487 140 126 181 250 240 210
26 217 239 268 312 515 466 135 128 181 252 240 209
27 222 231 272 309 523 452 133 129 185 254 239 210
28 216 230 267 306 532 437 129 128 189 252 240 211
29 213 244 263 304 535 426 126 127 190 252 239 211
30 217   260 310 543 419 120 128 193 252 236 214
31 221   261   551   116 130   251   216