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USGS Daily Statistics for the Nation

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 -> 2025-09-30)

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
1 203 81 335 629 593 711 815 159 421 118 221 130
2 186 80 380 679 595 649 748 128 383 142 208 132
3 171 80 389 696 628 551 648 108 452 191 199 132
4 151 82 364 673 686 487 542 99 401 241 190 129
5 129 88 333 601 890 496 468 107 414 271 170 120
6 116 99 302 543 817 526 428 117 454 261 164 111
7 113 100 303 501 754 537 401 126 372 244 166 107
8 112 90 319 472 709 574 418 126 292 244 168 102
9 114 81 368 457 673 872 369 118 261 286 159 98
10 108 81 482 446 662 971 337 131 304 351 147 95
11 100 87 641 452 617 820 341 122 379 394 150 91
12 97 108 765 505 588 818 327 114 288 347 166 87
13 95 127 816 580 586 826 323 110 231 306 183 91
14 93 154 790 633 581 739 312 108 204 292 179 122
15 87 150 791 609 570 704 285 102 184 282 165 150
16 79 137 786 600 538 628 246 91 184 264 151 164
17 74 142 754 600 498 681 217 82 200 232 136 170
18 78 159 730 585 470 701 211 78 218 219 136 156
19 80 183 724 555 458 707 241 78 214 237 128 139
20 82 225 720 533 536 785 327 109 275 222 120 112
21 96 297 783 584 529 851 312 151 365 191 119 101
22 106 363 806 668 698 810 455 192 501 187 118 103
23 104 391 789 711 944 915 443 216 799 198 120 105
24 108 374 770 674 930 992 398 216 598 210 124 108
25 119 321 696 753 785 1,020 342 349 463 208 123 113
26 112 262 650 797 721 981 280 492 336 207 118 118
27 104 248 608 796 708 925 238 426 260 209 119 133
28 93 274 559 748 758 889 199 373 214 222 125 162
29 85 173 525 693 802 936 166 860 175 219 130 196
30 82   554 616 829 927 163 717 135 220 129 192
31 83   573   762   169 535   231   194