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USGS Daily Statistics for the Nation

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 01400500 Raritan River at Manville NJ


Somerset County, New Jersey
Hydrologic Unit Code 02030105
Latitude  40°33'20", Longitude  74°34'58" NAD83
Drainage area 490  square miles
Gage datum 20.61 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 1903-10-01 -> 2022-09-30)

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 1,070 740 1,110 1,420 1,010 780 505 561 402 485 529 873
2 1,120 875 1,160 1,400 876 820 483 569 781 457 521 868
3 1,130 1,090 1,120 1,410 832 728 385 564 511 404 622 847
4 1,030 1,130 1,360 1,310 871 666 425 514 501 365 559 845
5 983 909 1,340 1,420 854 634 429 456 408 377 495 873
6 1,100 812 1,320 1,420 848 671 448 423 441 392 470 918
7 1,120 1,110 1,570 1,470 870 593 493 470 608 351 627 892
8 983 1,170 1,460 1,220 799 687 451 404 540 423 701 978
9 976 798 1,310 1,210 805 558 431 520 489 600 778 910
10 1,000 797 1,150 1,290 807 541 450 494 355 532 700 869
11 868 928 1,320 1,080 830 522 461 527 353 432 568 970
12 879 905 1,370 1,060 975 504 412 494 480 545 594 1,050
13 763 965 1,440 1,160 925 655 559 646 522 426 696 930
14 834 1,090 1,630 1,080 904 643 615 636 434 384 679 1,100
15 971 1,170 1,660 1,130 790 553 539 457 667 534 624 902
16 817 1,000 1,390 1,520 788 483 432 446 619 433 608 851
17 807 957 1,330 1,500 847 548 393 443 691 421 758 929
18 835 1,020 1,250 1,080 789 486 472 448 447 493 729 856
19 1,070 1,050 1,300 979 764 596 434 537 476 657 617 766
20 1,050 1,130 1,470 962 787 561 417 440 528 727 751 810
21 964 1,070 1,430 881 730 498 507 364 563 581 773 1,230
22 1,060 1,230 1,670 881 667 519 522 575 654 477 754 994
23 929 1,210 1,530 908 683 570 714 651 433 454 749 857
24 1,060 1,280 1,380 875 757 526 808 602 464 462 600 890
25 1,440 1,340 1,290 957 819 507 523 429 540 526 732 1,010
26 1,320 1,440 1,110 869 786 444 419 379 453 567 790 1,010
27 1,030 1,330 1,200 1,000 743 415 488 397 501 559 803 1,020
28 1,050 1,190 1,310 1,070 669 535 616 885 590 673 810 943
29 891 1,070 1,260 949 715 523 577 624 582 618 999 1,030
30 823   1,280 828 892 544 481 391 546 642 936 1,030
31 794   1,390   742   472 328   561   1,070