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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 01572190 Swatara Creek near Inwood, PA


Lebanon County, Pennsylvania
Hydrologic Unit Code 02050305
Latitude  40°28'45", Longitude  76°31'52" NAD27
Drainage area 167  square miles
Gage datum 426.13 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 1988-10-01 -> 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
1 355 338 411 598 493 289 214 129 188 289 376 475
2 369 360 466 613 401 272 198 190 330 173 256 514
3 345 351 429 730 385 275 176 155 167 150 289 410
4 333 439 431 654 348 268 164 226 126 148 218 429
5 335 417 604 518 378 319 220 212 152 175 208 421
6 341 349 525 476 470 305 173 180 175 135 227 375
7 314 350 517 531 485 277 215 181 342 125 205 353
8 371 324 452 481 466 238 215 154 670 170 205 341
9 391 289 480 430 437 235 163 154 267 157 267 298
10 478 272 589 446 409 225 160 158 209 162 248 320
11 371 268 727 479 419 335 136 164 171 179 230 452
12 357 289 596 483 431 346 203 215 140 185 274 501
13 396 277 534 610 391 390 230 461 128 152 296 423
14 433 267 521 546 386 309 261 294 109 161 243 438
15 381 286 507 618 435 238 264 198 103 171 256 400
16 382 334 459 673 511 211 225 152 128 181 281 396
17 349 328 441 705 529 208 237 130 144 166 356 487
18 363 348 442 510 408 221 202 134 459 164 274 522
19 440 330 426 460 404 219 154 140 299 309 246 392
20 531 297 469 446 413 250 136 119 180 314 279 338
21 377 348 572 423 340 398 121 171 132 275 272 429
22 311 360 702 453 295 290 156 193 127 209 289 399
23 363 368 604 417 282 238 335 169 253 200 427 425
24 493 450 614 372 285 234 449 128 210 218 325 528
25 507 536 564 358 264 216 448 113 189 212 346 662
26 460 472 525 375 256 323 302 99 190 202 308 463
27 461 415 615 375 254 351 185 92 191 236 334 384
28 464 416 615 394 240 731 150 165 320 338 558 384
29 399 573 689 360 257 343 148 130 287 384 435 372
30 390   595 388 304 225 131 106 287 383 366 356
31 383   573   287   128 107   319   335