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USGS Daily Statistics for Idaho

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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 13075500 PORTNEUF RIVER AT POCATELLO ID


Bannock County, Idaho
Hydrologic Unit Code 17040208
Latitude  42°52'18", Longitude 112°28'05" NAD83
Drainage area 1,256  square miles
Gage datum 4,421.48 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 1896-10-01 -> 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
1 251 272 331 444 545 392 146 81 94 153 222 256
2 253 282 334 451 542 378 139 81 95 157 224 258
3 252 284 337 455 539 369 132 83 96 163 226 259
4 251 276 339 458 541 359 124 82 97 166 229 258
5 250 271 343 464 540 346 120 83 98 167 233 256
6 249 270 345 472 541 336 118 82 97 168 236 254
7 248 271 345 480 546 334 114 80 99 171 237 254
8 250 274 347 482 547 330 110 81 101 174 239 252
9 257 278 355 487 543 324 106 81 104 177 240 251
10 256 285 361 491 541 317 104 80 106 179 241 252
11 255 288 367 493 542 310 101 80 107 182 242 252
12 255 297 373 499 538 298 97 80 110 183 244 254
13 257 308 377 500 527 290 91 81 112 185 246 255
14 260 313 382 502 520 280 90 82 113 188 248 254
15 264 310 383 507 516 277 85 84 115 191 249 252
16 265 311 381 509 515 266 84 85 118 194 248 251
17 264 313 388 515 516 255 81 84 121 195 250 248
18 265 316 392 519 526 246 80 85 124 197 254 244
19 264 321 397 521 522 237 76 87 126 199 256 245
20 268 323 404 525 516 229 76 87 128 200 255 247
21 271 325 411 528 513 221 77 90 132 202 255 250
22 274 327 418 534 512 214 79 92 135 202 255 254
23 272 331 426 541 500 207 80 93 138 205 254 257
24 271 327 432 545 489 202 79 95 140 208 256 256
25 269 327 435 545 477 194 79 94 141 211 256 255
26 267 329 435 543 464 187 78 94 144 212 256 257
27 265 329 434 542 451 179 80 93 146 213 255 256
28 262 328 434 545 440 171 79 91 147 215 254 255
29 258 331 436 548 428 164 80 92 149 218 253 255
30 260   438 547 416 155 80 92 151 219 253 255
31 263   441   403   81 93   221   253