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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 03028500 Clarion River at Johnsonburg, PA


Elk County, Pennsylvania
Hydrologic Unit Code 05010005
Latitude  41°29'10", Longitude  78°40'43" NAD27
Drainage area 204  square miles
Gage datum 1,423.03 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 1951-10-01 -> 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
1 522 323 409 723 457 369 386 255 253 276 329 412
2 525 344 426 759 440 346 379 258 243 271 313 400
3 480 350 403 772 409 333 355 273 277 267 309 416
4 469 347 466 793 400 323 331 254 267 260 306 424
5 428 332 550 807 389 335 326 254 252 254 309 432
6 392 302 500 734 394 345 313 285 257 249 329 463
7 362 300 500 708 408 313 300 312 240 250 320 487
8 338 339 543 661 409 309 302 336 239 251 302 496
9 344 309 512 642 420 300 290 328 240 268 291 485
10 322 332 551 650 456 273 280 337 255 254 330 480
11 313 332 561 620 494 253 273 289 241 275 349 476
12 384 328 561 636 591 271 278 303 249 285 358 464
13 385 338 556 587 616 276 273 312 273 311 341 456
14 354 377 527 559 598 310 258 357 259 300 350 450
15 359 353 542 576 574 358 324 303 251 290 349 475
16 346 365 506 588 585 355 289 277 242 289 362 419
17 337 376 520 619 568 334 287 267 245 261 384 399
18 403 406 498 565 501 349 285 300 260 272 373 409
19 356 404 476 514 474 376 273 270 259 270 362 399
20 371 411 498 486 454 424 281 250 265 257 353 405
21 371 387 533 492 511 559 302 284 243 275 347 444
22 401 378 559 468 453 469 270 269 313 269 349 469
23 370 413 550 438 467 474 277 252 285 265 368 450
24 355 439 558 436 388 417 270 235 259 280 387 443
25 379 490 567 430 388 438 259 231 275 291 364 484
26 415 441 564 436 412 437 245 227 285 273 393 454
27 464 407 555 424 362 387 261 243 279 291 421 453
28 393 391 547 437 367 373 241 244 319 312 476 468
29 367 365 613 514 371 371 254 265 313 328 451 469
30 350   655 464 355 366 250 254 267 315 440 503
31 340   741   376   266 245   307   525