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USGS Surface-Water Daily Statistics for Virginia

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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 02056000 ROANOKE RIVER AT NIAGARA, VA


Roanoke County, Virginia
Hydrologic Unit Code 03010101
Latitude  37°15'18", Longitude  79°52'18" NAD27
Drainage area 509  square miles
Gage datum 819.50 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 1926-10-01 -> 2019-09-30)

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
1 605 588 898 926 587 489 304 279 355 424 299 580
2 562 670 767 839 653 459 329 260 268 509 343 506
3 621 736 752 798 682 459 369 257 249 329 364 481
4 688 875 917 796 657 447 485 358 261 325 534 598
5 525 735 920 948 699 526 396 335 278 304 448 515
6 519 728 898 802 719 454 352 298 573 270 350 418
7 540 744 906 821 716 436 350 270 431 275 366 488
8 623 686 773 842 675 443 332 261 405 366 361 524
9 608 670 721 898 616 525 293 285 270 378 339 497
10 576 653 736 980 572 494 337 284 279 320 398 464
11 540 737 720 836 566 480 320 315 255 408 333 484
12 572 667 739 758 550 450 348 329 243 361 449 474
13 505 723 829 810 544 453 331 293 240 321 394 472
14 532 872 883 916 519 428 327 408 232 277 349 474
15 638 729 825 818 576 436 314 435 213 324 330 477
16 593 699 753 1,020 607 444 314 546 324 304 417 495
17 509 760 924 874 563 474 331 466 390 443 358 448
18 539 797 980 785 611 433 275 499 494 377 356 469
19 764 813 946 711 602 406 271 403 406 513 414 423
20 731 757 933 826 545 417 259 312 380 405 392 410
21 655 777 1,070 739 520 596 266 284 290 351 324 450
22 669 907 945 779 568 498 281 291 415 398 314 490
23 796 1,020 889 654 522 385 297 293 398 388 332 479
24 658 951 1,030 804 527 357 286 288 269 373 356 483
25 755 896 905 925 543 311 251 291 237 348 388 519
26 746 833 914 906 481 355 261 304 255 355 388 572
27 644 747 899 845 477 442 296 274 299 364 371 499
28 664 741 986 746 629 377 279 273 491 359 391 536
29 634 709 933 667 567 408 289 279 433 316 571 630
30 616   935 592 606 353 304 258 577 289 454 625
31 698   889   612   269 354   307   588