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USGS Daily Statistics for Iowa

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NOTE: Station Numbers for Iowa precipitation gages have changed (see list).


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 05420680 Wapsipinicon River near Tripoli, IA


Bremer County, Iowa
Hydrologic Unit Code 07080102
Latitude  42°50'09.93", Longitude  92°15'26.64" NAD83
Drainage area 346  square miles
Gage datum 986.39 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 1995-10-01 -> 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
1 208 84 347 642 584 728 814 159 421 122 228 134
2 190 83 393 689 586 666 755 128 383 147 215 137
3 174 83 402 703 623 564 656 108 452 198 204 137
4 154 85 376 675 686 497 549 99 401 250 194 134
5 131 91 340 597 900 505 473 107 414 281 174 124
6 118 102 300 538 828 537 431 117 454 271 168 115
7 116 103 297 500 764 548 403 126 372 253 170 111
8 114 93 313 473 719 588 422 126 292 253 173 105
9 116 84 369 461 684 898 372 118 261 296 163 101
10 110 83 489 450 674 1,000 341 131 304 364 151 98
11 102 89 654 458 629 845 345 122 379 409 154 94
12 99 112 787 514 601 841 325 114 288 360 171 89
13 98 132 842 593 599 837 321 110 231 318 188 94
14 96 159 816 649 594 749 313 108 204 303 184 126
15 89 155 817 625 583 710 288 102 184 292 169 155
16 82 142 811 616 551 629 248 91 184 274 155 170
17 76 147 779 616 510 681 219 82 200 240 139 177
18 81 165 754 599 482 698 213 78 218 227 139 161
19 83 190 747 565 470 695 238 78 214 246 131 144
20 85 233 743 540 549 785 328 109 275 230 122 116
21 100 308 808 578 533 856 315 151 365 198 120 104
22 109 377 830 646 700 817 459 192 501 194 119 106
23 108 406 813 671 950 930 437 216 799 205 121 109
24 112 388 791 623 935 1,010 344 216 621 218 125 111
25 123 332 711 698 786 1,040 293 349 481 216 125 117
26 116 271 664 744 725 997 252 492 349 214 120 123
27 107 256 621 747 716 935 211 426 270 217 121 137
28 96 283 571 712 770 889 168 373 222 230 128 168
29 88 173 536 675 819 933 166 860 181 227 133 202
30 85   566 607 848 919 163 717 140 227 133 198
31 85   586   780   169 535   239   199