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USGS Daily Statistics for Pennsylvania

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[!] Over the next year, the USGS Pennsylvania Water Science Center will be updating the geodetic vertical elevation (gage datum) for many locations. Click HERE for additional information including a current list of streamgages with upcoming datum changes. This update in gage datum does not affect the location of the streamgage, nor the observed local gage height or discharge recorded at the streamgage.


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 03007800 Allegheny River at Port Allegany, PA


Mckean County, Pennsylvania
Hydrologic Unit Code 05010001
Latitude  41°49'07", Longitude  78°17'35" NAD27
Drainage area 248  square miles
Gage datum 1,454.38 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 1974-10-01 -> 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
1 607 425 611 1,180 656 302 250 226 112 270 466 799
2 602 411 601 1,190 634 289 243 208 144 224 421 739
3 559 411 654 1,140 574 286 218 201 176 209 374 652
4 554 393 719 1,180 546 343 197 196 158 210 334 597
5 547 399 764 1,220 520 327 213 166 136 201 318 548
6 523 428 806 1,130 502 453 196 161 133 216 344 515
7 476 453 767 1,050 489 403 206 165 117 209 335 497
8 516 480 733 1,010 483 371 241 177 114 209 363 468
9 569 424 730 979 520 327 210 190 163 214 408 472
10 511 385 709 1,010 540 264 179 270 194 216 423 489
11 468 374 732 996 575 242 158 212 188 216 428 521
12 580 416 787 964 707 265 200 208 206 228 479 529
13 680 396 838 910 693 277 211 192 221 213 447 528
14 705 475 864 876 659 378 175 241 205 205 400 564
15 630 461 973 856 656 368 164 246 175 205 381 604
16 539 458 870 848 622 367 156 187 155 194 415 563
17 466 533 764 881 577 339 160 160 179 193 514 531
18 438 626 754 779 513 318 228 252 326 227 495 557
19 481 604 787 685 551 303 187 309 330 270 476 532
20 632 598 856 641 513 330 177 212 264 354 513 498
21 528 627 892 637 472 433 182 199 209 450 460 518
22 414 642 959 615 461 355 208 208 242 373 431 584
23 400 641 896 582 442 286 186 182 265 313 432 591
24 500 726 867 580 424 266 191 153 228 298 409 606
25 655 799 888 563 380 280 197 134 262 295 404 672
26 675 683 925 583 357 319 203 114 308 296 497 601
27 590 653 888 574 313 268 219 115 302 367 629 559
28 496 676 845 570 325 267 225 114 277 485 674 568
29 470 765 864 592 366 290 205 139 266 473 668 559
30 446   934 625 324 285 185 136 305 473 689 559
31 451   1,060   291   201 130   424   595