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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
1 388 396 296 314 459 500 390 313 426 598 714 460
2 383 377 268 333 457 525 380 295 430 591 733 445
3 368 350 252 316 470 538 368 276 450 612 692 457
4 363 352 247 297 492 538 365 283 478 572 676 454
5 375 354 253 291 500 541 361 303 468 567 650 460
6 389 359 248 300 498 526 347 328 457 606 609 481
7 441 355 239 308 494 502 349 317 449 621 572 497
8 444 364 237 310 480 480 344 296 426 622 560 476
9 403 373 242 310 467 473 344 310 438 632 544 435
10 386 349 237 315 459 476 350 340 421 657 545 442
11 386 306 232 322 463 488 354 345 417 661 533 438
12 370 299 236 355 478 496 358 331 405 703 532 410
13 361 306 251 355 489 483 359 318 390 743 546 403
14 380 315 266 351 502 473 342 308 377 765 550 396
15 393 314 260 354 517 457 319 312 382 729 545 381
16 384 313 267 373 510 438 304 330 404 684 528 372
17 410 300 264 365 504 428 299 320 395 661 503 368
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
20 354 304 291 365 503 431 302 330 454 744 530 407
21 341 318 300 372 511 436 306 363 513 731 557 412
22 353 312 288 373 529 432 302 389 561 751 584 421
23 362 287 275 370 540 421 293 392 568 809 566 427
24 349 278 255 367 546 416 301 385 563 787 541 433
25 346 284 256 369 526 415 315 374 539 761 512 438
26 362 298 255 400 517 400 323 384 528 737 490 430
27 356 313 259 439 502 385 314 380 517 707 477 423
28 381 309 268 454 496 387 309 386 544 676 471 404
29 382 296 286 462 500 385 310 399 575 652 510 381
30 402   287 462 499 389 302 390 584 652 510 356
31 403   300   489   304 409   694   374