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USGS Daily Statistics for Alaska

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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 15072000 FISH C NR KETCHIKAN AK


Ketchikan Gateway Borough, Alaska
Hydrologic Unit Code 19010102
Latitude  55°23'31", Longitude 131°11'38" NAD27
Drainage area 34.6  square miles
Gage datum 20.00 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 1914-10-01 -> 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
1 389 396 296 314 459 500 391 313 426 598 715 460
2 383 377 268 333 457 526 380 295 430 591 734 445
3 368 351 252 316 470 538 368 276 450 612 692 457
4 363 352 247 297 491 538 365 283 478 572 677 454
5 375 355 253 291 500 541 361 303 468 567 650 460
6 389 359 248 300 498 526 347 328 457 606 610 481
7 441 356 239 308 494 502 349 317 449 621 572 497
8 444 364 237 310 480 480 344 296 426 622 561 476
9 403 373 242 310 467 474 344 310 438 632 545 435
10 386 349 237 315 459 476 350 340 421 657 546 442
11 386 306 232 322 462 488 354 345 417 661 534 439
12 370 299 236 354 478 496 358 331 405 703 532 410
13 361 307 250 354 488 483 359 318 390 743 546 403
14 380 315 265 350 502 473 342 308 377 765 550 396
15 393 315 260 353 517 457 319 312 382 729 545 381
16 385 313 267 373 510 438 304 331 404 684 528 372
17 410 301 264 364 504 428 299 320 395 661 503 368
18 385 308 263 367 504 429 300 307 394 692 527 380
19 371 304 287 358 499 425 297 308 419 736 550 393
20 354 304 290 365 503 431 302 330 454 745 530 407
21 341 318 300 372 511 436 306 363 514 732 557 412
22 354 312 288 373 529 432 302 389 562 752 585 421
23 363 287 275 370 540 421 293 392 569 809 566 427
24 349 278 255 366 546 416 301 385 563 788 541 434
25 346 284 256 369 526 415 315 374 539 761 512 438
26 362 299 255 400 517 400 323 384 528 738 490 430
27 356 313 259 438 502 385 314 380 517 708 477 423
28 382 309 267 454 496 387 309 386 544 676 471 404
29 383 296 286 462 500 385 310 399 575 652 510 382
30 403   287 462 499 390 302 390 584 652 510 356
31 403   300   489   304 409   694   375