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  • Explore the NEW USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.

    • 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 03085500 Chartiers Creek at Carnegie, PA


    Allegheny County, Pennsylvania
    Hydrologic Unit Code 05030101
    Latitude  40°24'02", Longitude  80°05'48" NAD27
    Drainage area 257  square miles
    Gage datum 754.9 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 1919-10-01 -> 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
    1 387 375 465 579 358 244 198 142 201 127 178 282
    2 387 429 479 603 377 259 182 128 149 138 179 257
    3 424 404 446 615 364 264 190 162 129 141 153 280
    4 480 424 605 636 368 255 174 156 121 125 168 279
    5 428 412 699 587 353 281 215 186 173 118 165 255
    6 418 459 660 518 409 252 202 262 148 113 165 271
    7 326 458 734 531 419 245 177 188 170 125 154 262
    8 333 407 625 502 407 280 190 136 133 108 173 268
    9 340 351 579 522 407 273 234 128 202 112 159 300
    10 300 372 636 536 422 244 241 133 207 103 163 278
    11 318 427 590 484 399 250 223 171 125 97 167 289
    12 404 425 591 594 427 229 224 167 114 102 186 294
    13 339 490 587 573 450 244 222 155 114 105 174 316
    14 335 513 622 532 384 267 211 150 118 112 167 355
    15 356 484 659 533 364 283 171 144 110 133 182 297
    16 334 564 545 501 354 263 155 135 100 167 310 338
    17 303 459 557 464 362 325 152 122 191 145 280 314
    18 320 513 512 412 424 245 137 198 284 140 235 354
    19 424 506 596 401 379 295 152 157 124 135 231 286
    20 388 460 667 408 343 256 174 184 104 135 227 243
    21 380 483 654 402 366 268 188 174 145 139 185 283
    22 386 524 617 384 341 285 188 141 176 125 175 314
    23 383 583 589 394 313 278 195 131 134 115 184 285
    24 456 641 603 404 321 240 164 113 160 121 183 303
    25 455 641 496 396 359 241 135 125 145 136 187 314
    26 443 669 509 463 345 210 132 108 145 123 256 314
    27 422 507 486 398 303 226 181 111 137 132 299 313
    28 460 483 494 389 322 240 235 122 146 140 296 340
    29 413 406 581 409 319 240 283 130 164 150 252 321
    30 419   553 384 261 203 174 110 173 157 231 378
    31 413   541   288   176 142   170   350