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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 -> 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 84 360 665 589 728 794 162 433 122 228 134
2 190 83 409 714 590 667 725 129 392 147 215 137
3 174 83 418 729 621 564 591 108 467 198 204 137
4 154 85 391 697 681 496 454 98 415 250 194 134
5 131 91 353 616 899 505 402 108 429 281 174 124
6 118 102 311 555 821 526 369 118 471 271 168 115
7 116 103 308 516 755 530 338 126 385 253 170 111
8 114 93 325 488 713 569 366 126 302 253 173 105
9 116 84 383 474 675 899 331 119 270 296 163 101
10 110 83 509 462 652 1,020 318 133 315 364 151 98
11 102 89 681 471 593 860 330 124 393 409 154 94
12 99 112 820 529 567 858 314 116 299 360 171 89
13 98 132 877 612 583 856 313 112 239 318 188 94
14 96 159 850 671 589 766 308 110 211 303 184 126
15 89 155 851 647 584 726 284 103 190 292 169 155
16 82 142 845 636 553 642 245 92 190 274 155 170
17 76 147 811 630 511 696 215 82 207 240 139 177
18 81 165 785 605 485 715 211 78 225 227 139 161
19 83 190 779 564 475 710 238 78 221 246 131 144
20 85 233 774 535 557 803 333 111 285 230 122 116
21 100 308 841 578 519 878 320 155 379 198 120 104
22 109 377 865 654 639 820 471 198 520 194 119 106
23 108 406 847 683 822 893 448 223 831 205 121 109
24 112 388 824 636 821 953 351 223 621 218 125 111
25 123 332 740 717 701 971 299 361 481 216 125 117
26 116 281 690 764 647 937 257 510 349 214 120 123
27 107 266 642 764 643 868 215 442 270 217 121 137
28 96 294 589 725 709 818 171 387 222 230 128 168
29 88 202 552 685 770 892 167 894 181 227 133 202
30 85   584 613 821 899 164 745 140 227 133 198
31 85   606   773   171 555   239   199