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USGS 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
1 597 587 889 931 587 491 304 279 355 424 299 580
2 555 670 750 843 654 461 329 260 268 509 343 506
3 616 737 738 801 682 461 369 257 249 329 364 481
4 684 877 897 799 657 448 487 358 261 325 534 598
5 518 736 908 952 699 528 395 335 278 304 448 515
6 513 730 890 804 721 455 351 298 573 270 350 418
7 535 745 901 825 718 435 349 270 431 275 366 487
8 619 687 768 844 676 409 330 261 405 366 361 524
9 605 672 717 900 617 481 290 285 270 378 339 496
10 573 654 731 984 573 472 337 284 279 320 398 462
11 538 739 716 839 567 458 320 315 255 408 333 483
12 570 665 735 759 550 440 348 329 243 361 449 473
13 502 718 827 810 544 448 331 293 240 321 394 471
14 530 870 882 901 519 424 327 408 232 277 349 469
15 637 726 824 794 577 434 314 435 213 324 330 445
16 592 696 752 1,010 609 443 314 546 324 304 417 456
17 507 757 925 869 565 473 331 466 390 443 358 425
18 537 786 982 782 613 432 275 499 494 377 356 455
19 764 804 948 695 604 405 271 403 406 513 414 413
20 713 746 936 789 546 416 259 312 380 405 392 393
21 642 746 1,070 722 522 598 266 284 290 351 324 404
22 662 855 949 770 570 499 281 291 415 398 314 452
23 792 924 892 647 524 385 297 293 398 388 332 459
24 650 871 1,030 802 529 356 286 288 269 373 356 470
25 746 859 909 925 545 310 251 291 237 348 388 510
26 741 812 918 907 483 355 261 304 255 355 388 566
27 639 733 902 846 478 443 296 274 299 364 371 494
28 661 731 991 746 632 377 279 273 491 359 391 502
29 632 709 938 667 570 409 289 279 433 316 571 591
30 614   940 592 609 354 304 258 577 289 454 606
31 697   893   614   269 354   307   576