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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.

[!] ICE EFFECTS ON STREAMFLOW -- During cold weather, stage and discharge values may be affected by ice at some streamgages. Streamgages experiencing ice conditions will have the discharge record temporarily disabled to prevent the display of erroneous discharge values. Display of discharge record will resume when it is determined that ice conditions are no longer present. Adjustment of data affected by ice can only be done after detailed analysis.


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 -> 2023-09-30)

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
1 456 378 771 927 576 350 225 160 171 180 211 424
2 514 409 743 929 529 369 223 147 194 184 224 418
3 463 461 701 875 562 355 221 198 139 209 237 358
4 445 484 796 887 542 371 225 187 128 167 229 363
5 469 454 970 959 589 386 235 163 141 154 250 357
6 465 434 984 875 566 365 210 160 189 152 216 368
7 440 473 901 827 629 345 211 192 250 143 221 392
8 433 458 817 770 621 303 196 205 178 140 345 391
9 422 412 784 785 631 306 188 156 282 177 303 371
10 410 443 790 787 595 287 186 159 325 188 261 370
11 394 450 878 694 588 277 189 154 222 162 222 422
12 390 482 947 709 709 333 184 157 167 148 232 403
13 390 523 936 763 645 348 211 165 177 143 299 414
14 364 603 962 756 589 337 190 154 153 143 250 430
15 378 611 980 785 543 291 185 140 140 165 243 401
16 373 563 875 824 544 295 194 137 139 198 270 398
17 379 548 918 855 528 278 189 138 182 182 320 371
18 391 526 1,000 689 576 260 189 159 359 192 274 385
19 471 527 890 634 550 306 180 138 230 218 304 375
20 479 596 894 665 504 292 237 134 170 224 334 366
21 428 623 904 666 531 370 179 170 147 207 288 387
22 498 651 930 688 517 380 177 175 145 201 304 409
23 457 671 862 624 505 451 203 141 162 245 306 404
24 464 695 958 584 460 330 163 149 144 226 268 439
25 533 789 906 575 446 274 167 139 179 204 313 465
26 481 829 816 688 440 246 162 130 201 226 334 414
27 479 707 821 696 394 279 155 139 169 205 339 396
28 448 732 830 680 409 288 170 121 224 230 484 405
29 413 635 932 618 467 281 164 130 227 236 435 419
30 433   925 592 408 228 156 125 208 277 391 486
31 437   988   385   156 135   218   453