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USGS Daily Statistics for the Nation

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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 04114000 GRAND RIVER AT PORTLAND, MI


Ionia County, Michigan
Hydrologic Unit Code 04050004
Latitude  42°51'23", Longitude  84°54'44" NAD27
Drainage area 1,385  square miles
Gage datum 704.52 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 1951-10-01 -> 2026-09-30)

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 1,270 1,140 1,610 2,240 1,810 1,150 943 563 443 544 702 1,030
2 1,210 1,120 1,670 2,220 1,790 1,130 875 545 437 562 727 1,040
3 1,170 1,100 1,740 2,250 1,720 1,090 848 530 425 575 765 1,020
4 1,130 1,060 1,820 2,260 1,670 1,060 791 523 435 559 756 1,010
5 1,130 1,030 1,980 2,260 1,600 1,030 788 523 426 548 776 983
6 1,120 1,030 2,030 2,270 1,520 1,020 752 518 398 569 816 961
7 1,100 1,030 2,030 2,270 1,480 1,020 720 510 400 597 782 956
8 1,110 1,040 2,020 2,210 1,440 1,030 729 507 414 603 762 956
9 1,090 1,070 2,040 2,150 1,410 1,040 729 515 458 586 744 957
10 1,090 1,160 2,060 2,090 1,460 1,010 730 511 456 581 756 928
11 1,110 1,180 2,080 2,050 1,510 1,000 722 538 442 568 763 925
12 1,130 1,190 2,140 2,050 1,550 959 709 525 429 556 744 924
13 1,210 1,160 2,200 1,990 1,570 947 724 515 416 546 743 964
14 1,240 1,110 2,270 1,910 1,590 1,000 711 522 447 553 740 951
15 1,180 1,100 2,300 1,860 1,620 1,010 670 516 513 593 756 997
16 1,110 1,100 2,280 1,830 1,680 967 616 524 528 579 786 979
17 1,060 1,180 2,240 1,810 1,650 913 582 537 539 615 794 954
18 1,050 1,300 2,170 1,770 1,650 968 535 552 509 640 811 939
19 1,030 1,350 2,110 1,820 1,660 983 545 518 512 647 834 916
20 1,030 1,480 2,060 1,920 1,620 1,030 549 523 497 647 840 894
21 1,030 1,640 2,050 1,990 1,600 1,020 544 541 499 634 848 890
22 1,050 1,700 2,050 1,950 1,550 1,010 558 505 487 619 844 902
23 1,100 1,690 2,060 1,930 1,450 1,010 532 492 529 624 836 887
24 1,160 1,660 2,080 1,920 1,400 1,000 539 474 524 662 848 916
25 1,190 1,620 2,060 1,870 1,280 1,010 549 477 502 677 861 937
26 1,170 1,590 2,070 1,890 1,250 1,050 527 441 486 667 850 936
27 1,150 1,560 2,050 1,860 1,210 1,060 504 443 480 680 854 949
28 1,130 1,590 2,050 1,860 1,200 1,030 535 456 480 673 944 1,010
29 1,120 1,390 2,130 1,840 1,190 1,010 587 468 474 667 972 1,050
30 1,140   2,140 1,790 1,170 969 595 443 490 669 1,010 1,110
31 1,170   2,210   1,160   593 443   668   1,240