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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 01556000 Frankstown Br Juniata River at Williamsburg, PA


Blair County, Pennsylvania
Hydrologic Unit Code 02050302
Latitude  40°27'47", Longitude  78°12'00" NAD27
Drainage area 291  square miles
Gage datum 831.78 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 1916-10-01 -> 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
1 465 384 773 922 578 347 225 159 171 179 210 422
2 521 413 750 953 531 366 226 147 194 183 223 415
3 485 462 706 956 562 352 221 197 138 208 235 357
4 473 483 806 937 544 368 225 187 128 166 227 363
5 480 454 971 970 590 382 234 162 141 154 247 356
6 470 433 981 880 566 363 209 160 188 152 214 367
7 443 472 900 827 627 342 211 192 249 143 219 390
8 435 457 814 769 619 300 195 203 178 140 341 389
9 425 411 792 781 627 303 187 179 281 176 299 368
10 439 441 819 782 609 285 186 164 324 187 258 368
11 407 447 884 690 599 274 189 156 222 162 223 424
12 399 479 946 719 714 330 183 158 166 147 263 402
13 415 521 931 781 646 345 210 168 177 143 304 412
14 376 599 955 762 589 334 188 154 153 143 253 427
15 385 606 972 788 542 289 184 145 140 166 244 399
16 378 559 868 821 542 293 194 138 139 198 270 397
17 382 545 910 850 526 277 189 139 181 181 320 371
18 393 522 992 689 573 257 188 159 356 192 275 388
19 477 523 881 632 546 303 180 139 229 217 303 375
20 487 591 885 662 501 289 235 134 169 223 332 365
21 432 617 894 662 526 365 185 169 146 206 288 385
22 498 645 919 683 513 375 178 175 144 200 319 407
23 459 670 854 620 502 446 204 141 162 244 309 413
24 464 692 953 580 457 327 163 148 144 225 269 441
25 537 783 902 571 442 272 167 139 178 203 312 464
26 502 822 812 681 437 244 162 130 200 224 333 413
27 502 702 816 689 392 278 155 138 169 203 338 397
28 476 740 823 674 406 286 169 121 223 228 482 411
29 434 656 923 613 463 279 164 129 226 234 433 421
30 444   915 591 405 227 156 127 207 276 389 487
31 444   977   382   156 135   218   457