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USGS Daily Statistics for Michigan

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NOTE: During winter months, stage and discharge may be significantly affected by backwater from ice, resulting in incorrect discharge data. Consequently, discharge data may not be displayed during periods of ice effect. Click here for more information.



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 -> 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 1,270 1,100 1,620 2,260 1,840 1,160 931 549 440 552 712 1,030
2 1,210 1,090 1,680 2,230 1,810 1,140 861 530 436 571 738 1,040
3 1,160 1,070 1,760 2,200 1,740 1,100 834 516 425 584 778 1,030
4 1,130 1,030 1,850 2,200 1,680 1,070 778 513 433 568 768 1,010
5 1,130 1,000 2,000 2,210 1,610 1,030 779 516 422 556 784 991
6 1,120 1,010 2,040 2,220 1,520 1,020 743 508 397 579 827 968
7 1,100 1,010 2,030 2,240 1,470 1,010 710 489 398 607 792 964
8 1,110 1,030 2,030 2,190 1,410 1,020 723 489 415 608 771 963
9 1,100 1,060 2,040 2,150 1,390 1,030 725 500 460 595 753 964
10 1,100 1,160 2,060 2,090 1,440 1,010 704 500 459 590 768 934
11 1,120 1,180 2,090 2,050 1,500 1,000 666 529 445 578 769 931
12 1,140 1,190 2,160 2,050 1,550 959 633 519 432 565 751 930
13 1,220 1,160 2,230 1,990 1,570 949 642 512 419 553 751 971
14 1,250 1,110 2,290 1,900 1,600 1,010 638 519 452 557 747 959
15 1,190 1,100 2,320 1,860 1,630 1,010 608 515 520 600 765 1,010
16 1,120 1,110 2,300 1,830 1,690 973 567 522 535 586 796 986
17 1,070 1,190 2,250 1,820 1,660 917 546 534 547 622 804 958
18 1,050 1,320 2,190 1,770 1,670 962 504 548 517 649 821 944
19 1,030 1,370 2,130 1,830 1,670 968 519 515 520 650 846 920
20 1,040 1,500 2,080 1,930 1,640 1,020 523 517 504 644 851 898
21 1,040 1,660 2,070 2,000 1,620 1,000 523 539 506 636 852 895
22 1,060 1,720 2,070 1,960 1,560 992 541 505 494 620 847 907
23 1,110 1,720 2,080 1,950 1,460 996 517 493 536 627 839 894
24 1,170 1,690 2,100 1,940 1,400 999 528 475 528 666 851 922
25 1,200 1,640 2,090 1,890 1,290 1,010 538 479 507 683 865 943
26 1,180 1,600 2,100 1,910 1,250 1,040 514 442 491 674 854 943
27 1,160 1,580 2,080 1,880 1,210 1,060 492 445 486 688 858 956
28 1,140 1,600 2,080 1,880 1,210 1,020 526 454 487 682 950 1,010
29 1,130 1,380 2,160 1,860 1,200 1,000 579 468 479 675 978 1,060
30 1,090   2,160 1,820 1,170 962 582 441 498 678 1,020 1,110
31 1,120   2,230   1,170   580 440   676   1,240