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USGS Daily Statistics for Indiana

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NOTE: USGS Indiana historic, recent, and real-time data will continue to be provided in Eastern Standard Time.


NOTE: During winter months, stage and discharge may be affected by ice. 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 04181500 ST. MARYS RIVER AT DECATUR, IN


Adams County, Indiana
Hydrologic Unit Code 04100004
Latitude  40°50'53", Longitude  84°56'16" NAD27
Drainage area 621  square miles
Gage datum 760.12 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 1946-10-01 -> 2021-09-30)

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
1 918 700 1,060 998 729 621 412 154 122 121 125 588
2 860 706 1,080 925 689 638 390 188 135 110 228 565
3 834 715 1,120 905 621 675 400 204 121 90 272 578
4 931 701 1,210 971 580 633 397 206 137 97 239 561
5 947 753 1,330 1,010 626 584 403 281 130 124 217 539
6 898 726 1,280 1,100 603 531 392 259 117 145 219 545
7 811 696 1,130 1,130 537 471 451 212 95 140 190 587
8 746 734 1,110 1,090 508 462 459 191 79 128 206 596
9 710 754 1,170 1,020 516 494 449 189 87 147 191 556
10 690 882 1,230 1,040 578 511 444 166 177 184 178 564
11 685 909 1,270 1,070 636 481 445 165 202 180 187 569
12 752 872 1,250 1,070 652 536 400 143 185 196 202 625
13 847 843 1,260 1,000 661 624 361 125 143 175 216 605
14 858 818 1,300 992 651 778 384 120 113 161 272 562
15 844 885 1,310 976 629 774 416 142 91 182 307 619
16 814 889 1,260 945 597 746 457 134 75 185 373 630
17 778 896 1,170 883 562 687 459 134 77 184 415 574
18 814 966 1,120 809 592 632 441 152 97 170 392 539
19 791 1,010 1,170 814 596 550 493 171 90 163 455 567
20 728 986 1,150 904 561 503 448 145 108 165 490 556
21 788 1,010 1,160 931 545 461 364 182 121 187 464 573
22 839 1,050 1,190 903 570 419 370 194 133 167 423 626
23 886 1,120 1,130 967 553 365 376 150 117 165 436 638
24 901 1,110 1,060 999 529 332 353 97 95 189 438 639
25 805 1,120 941 955 615 359 329 99 136 191 411 654
26 758 1,040 906 986 733 377 324 100 128 165 472 688
27 828 1,070 853 907 687 408 254 93 184 141 472 681
28 845 1,110 931 933 678 414 223 80 170 134 495 697
29 849 682 1,020 889 719 416 174 109 145 118 560 737
30 860   1,030 818 671 408 144 131 132 107 563 790
31 829   1,010   682   170 130   100   843