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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 -> 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 1,280 1,110 1,610 2,220 1,850 1,170 947 548 436 558 710 1,050
2 1,210 1,100 1,670 2,180 1,820 1,150 875 532 435 577 741 1,050
3 1,170 1,080 1,750 2,150 1,750 1,110 846 519 423 592 783 1,030
4 1,130 1,040 1,850 2,130 1,680 1,080 788 510 433 575 773 1,010
5 1,130 1,010 2,000 2,110 1,610 1,040 789 512 420 563 791 988
6 1,130 1,020 2,040 2,110 1,520 1,020 748 508 398 570 834 965
7 1,110 1,020 2,020 2,160 1,470 1,020 715 484 398 596 800 964
8 1,120 1,040 2,010 2,130 1,410 1,020 731 480 415 599 779 966
9 1,110 1,060 2,030 2,110 1,390 1,030 731 492 462 590 750 970
10 1,100 1,150 2,050 2,070 1,440 1,010 712 498 461 588 768 939
11 1,110 1,170 2,080 2,040 1,500 1,010 673 529 448 580 769 937
12 1,130 1,180 2,150 2,040 1,550 965 638 519 433 567 752 938
13 1,210 1,160 2,220 1,980 1,580 957 626 512 420 555 755 981
14 1,250 1,110 2,290 1,890 1,610 1,010 629 518 455 559 752 968
15 1,200 1,100 2,330 1,850 1,650 1,020 601 499 524 601 771 1,020
16 1,130 1,110 2,310 1,830 1,700 979 563 502 539 587 804 997
17 1,080 1,190 2,250 1,820 1,670 924 544 511 553 624 814 969
18 1,060 1,320 2,190 1,780 1,680 969 506 524 522 651 830 953
19 1,040 1,380 2,130 1,830 1,690 979 520 496 526 655 856 929
20 1,040 1,510 2,080 1,930 1,660 1,030 525 504 510 647 862 905
21 1,040 1,670 2,080 2,010 1,630 1,010 527 531 507 638 863 903
22 1,060 1,740 2,080 1,970 1,580 1,010 545 498 496 620 851 917
23 1,110 1,730 2,090 1,960 1,470 1,010 520 490 540 625 842 902
24 1,180 1,700 2,110 1,950 1,420 1,020 532 473 534 668 855 927
25 1,200 1,650 2,090 1,900 1,300 1,030 535 463 511 686 870 944
26 1,160 1,610 2,100 1,920 1,260 1,060 516 424 496 674 861 945
27 1,110 1,580 2,070 1,890 1,220 1,080 492 426 490 685 866 960
28 1,070 1,580 2,070 1,890 1,210 1,040 527 438 490 681 960 1,020
29 1,060 1,380 2,150 1,870 1,200 1,020 582 456 482 676 990 1,070
30 1,090   2,160 1,820 1,180 976 581 431 500 678 1,040 1,110
31 1,130   2,220   1,170   578 433   676   1,250