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USGS Daily Statistics for Iowa

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Boating safety tips are available from the U.S. Coast Guard.

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 06898000 Thompson River at Davis City, IA


Decatur County, Iowa
Hydrologic Unit Code 10280102
Latitude  40°38'25", Longitude  93°48'29" NAD83
Drainage area 701  square miles
Gage datum 874.37 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 1918-10-01 -> 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
1 177 210 400 726 773 693 480 153 344 220 278 204
2 142 234 452 605 803 793 360 165 277 150 328 243
3 136 270 498 628 839 757 342 195 189 158 291 184
4 111 294 584 613 741 721 455 179 192 132 206 170
5 164 268 617 592 623 953 752 162 254 146 141 190
6 204 209 513 565 621 920 758 275 263 148 143 176
7 192 199 426 461 961 871 645 326 224 189 142 138
8 157 195 427 578 1,180 834 473 321 241 194 122 129
9 106 204 483 538 989 789 505 239 341 368 114 110
10 82 241 562 606 957 772 573 163 440 376 203 102
11 86 244 641 605 971 726 612 137 299 383 234 114
12 108 228 730 639 881 788 580 141 288 351 279 99
13 133 244 818 628 813 929 472 181 316 311 300 131
14 162 262 786 615 745 961 310 127 269 265 227 286
15 186 275 789 673 727 965 303 154 427 192 162 274
16 166 275 822 794 705 767 285 173 850 136 196 206
17 179 312 758 854 723 608 384 178 640 116 248 192
18 189 419 716 1,080 646 582 357 125 490 124 270 124
19 168 441 864 1,060 539 649 292 129 486 116 173 108
20 158 482 823 1,000 531 711 465 196 365 121 221 116
21 164 489 677 871 616 605 348 219 334 102 242 105
22 148 429 598 767 709 570 359 129 289 147 173 103
23 168 398 608 761 743 585 243 122 293 233 137 138
24 182 404 639 684 636 565 404 252 260 262 140 233
25 151 416 724 707 757 520 442 260 272 246 164 243
26 148 386 686 668 959 620 363 388 324 205 145 182
27 157 397 642 801 1,020 623 285 520 276 195 182 230
28 153 378 582 685 878 560 316 440 173 188 200 269
29 146 270 613 531 840 515 362 298 167 206 192 237
30 149   751 592 879 442 402 345 262 195 213 239
31 150   834   794   246 305   231   208