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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 04116000 GRAND RIVER AT IONIA, MI


Ionia County, Michigan
Hydrologic Unit Code 04050006
Latitude  42°58'19", Longitude  85°04'09" NAD27
Drainage area 2,840  square miles
Gage datum 614.63 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 1930-10-01 -> 2023-09-30)

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 2,510 2,290 3,480 4,600 3,580 2,290 1,770 914 827 1,190 1,360 2,080
2 2,490 2,300 3,490 4,620 3,580 2,240 1,660 872 844 1,370 1,460 2,070
3 2,430 2,230 3,530 4,590 3,510 2,200 1,550 850 808 1,430 1,520 2,070
4 2,350 2,190 3,740 4,540 3,380 2,120 1,470 858 808 1,470 1,530 2,050
5 2,320 2,170 3,960 4,530 3,220 2,050 1,420 866 788 1,420 1,540 2,000
6 2,340 2,160 4,170 4,570 3,050 1,960 1,380 851 783 1,350 1,610 1,990
7 2,260 2,110 4,220 4,720 2,950 1,910 1,310 832 798 1,330 1,630 1,960
8 2,200 2,100 4,220 4,700 2,860 1,890 1,300 825 808 1,270 1,580 1,960
9 2,170 2,130 4,210 4,610 2,760 1,870 1,330 839 838 1,230 1,540 1,940
10 2,160 2,220 4,260 4,520 2,800 1,820 1,300 837 876 1,200 1,530 1,940
11 2,160 2,270 4,400 4,410 2,920 1,810 1,250 843 889 1,190 1,550 1,910
12 2,240 2,310 4,550 4,340 2,990 1,810 1,230 843 915 1,170 1,560 1,920
13 2,290 2,330 4,730 4,290 3,020 1,830 1,180 843 925 1,130 1,550 1,960
14 2,310 2,270 4,880 4,180 3,030 1,820 1,190 815 931 1,130 1,570 1,960
15 2,290 2,240 5,040 4,090 3,020 1,840 1,170 810 971 1,150 1,580 1,990
16 2,220 2,250 5,050 4,060 3,080 1,810 1,110 806 997 1,180 1,620 2,010
17 2,160 2,320 4,930 3,970 3,090 1,750 1,050 830 983 1,190 1,630 1,960
18 2,220 2,480 4,720 3,910 3,080 1,720 1,000 833 966 1,220 1,630 1,930
19 2,200 2,640 4,530 3,900 3,200 1,750 980 812 946 1,200 1,650 1,890
20 2,120 2,750 4,480 3,930 3,250 1,820 957 823 920 1,240 1,680 1,850
21 2,110 3,060 4,410 4,000 3,140 1,850 951 882 915 1,220 1,700 1,850
22 2,120 3,360 4,360 3,950 3,090 1,840 949 889 938 1,200 1,690 1,850
23 2,190 3,500 4,360 3,880 2,990 1,800 960 909 1,000 1,220 1,640 1,850
24 2,280 3,500 4,350 3,810 2,860 1,820 910 897 1,040 1,290 1,660 1,850
25 2,330 3,520 4,350 3,760 2,740 1,840 924 890 1,010 1,360 1,700 1,920
26 2,280 3,560 4,340 3,770 2,620 1,880 942 840 996 1,360 1,690 1,940
27 2,190 3,510 4,300 3,730 2,530 1,910 915 827 1,020 1,370 1,710 1,970
28 2,140 3,490 4,300 3,690 2,450 1,890 874 836 1,030 1,390 1,850 2,110
29 2,110 2,650 4,360 3,700 2,420 1,860 911 843 1,020 1,340 1,960 2,180
30 2,160   4,430 3,600 2,350 1,810 934 853 1,040 1,320 2,040 2,270
31 2,260   4,490   2,310   933 827   1,350   2,350