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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 05487470 South River near Ackworth, IA


Warren County, Iowa
Hydrologic Unit Code 07100008
Latitude  41°20'16.4", Longitude  93°29'11.1" NAD83
Drainage area 460  square miles
Gage datum 769.84 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 1940-10-01 -> 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 78 183 237 434 475 369 244 87 107 85 231 138
2 86 187 296 323 433 314 176 107 65 122 167 163
3 74 106 375 338 466 302 269 75 93 145 133 90
4 69 139 382 431 420 275 413 222 95 72 103 111
5 69 172 342 378 386 713 557 113 73 88 92 155
6 146 138 288 314 486 475 512 156 74 103 107 128
7 75 151 240 287 788 251 331 137 99 103 89 79
8 65 141 353 356 632 392 438 257 103 142 58 86
9 57 136 377 362 572 716 283 116 124 322 76 75
10 56 120 562 376 517 737 303 78 383 200 128 63
11 59 121 532 475 505 516 322 99 124 255 109 71
12 96 137 478 521 564 784 408 190 141 248 128 62
13 190 180 636 410 630 801 207 72 332 102 118 93
14 88 167 503 429 466 616 170 82 254 272 100 283
15 114 165 510 517 467 623 193 118 235 138 86 137
16 119 166 487 676 397 629 363 69 279 68 173 87
17 130 185 523 494 578 603 267 53 141 55 189 77
18 101 311 471 894 427 473 362 74 145 102 119 71
19 106 368 689 630 339 523 374 195 126 69 94 64
20 122 393 546 469 282 433 402 180 174 66 127 68
21 103 275 331 515 475 522 264 117 198 88 97 64
22 80 213 366 488 546 546 158 87 123 148 81 65
23 89 233 400 412 415 358 117 300 235 237 79 113
24 78 266 484 418 399 309 138 396 184 216 90 198
25 76 249 467 658 802 725 161 246 295 140 107 131
26 97 208 445 431 666 504 145 429 206 96 102 103
27 130 241 418 656 520 526 216 305 115 73 146 190
28 102 298 476 444 537 281 413 148 70 83 157 224
29 97 164 511 391 785 275 520 126 80 89 105 150
30 105   665 435 501 272 151 71 104 96 111 225
31 98   595   384   137 66   170   120