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USGS Surface-Water 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 06600500 Floyd River at James, IA


Plymouth County, Iowa
Hydrologic Unit Code 10230002
Latitude  42°34'35.0", Longitude  96°18'41.6" NAD83
Drainage area 886  square miles
Gage datum 1,093.29 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 1935-10-01 -> 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
1 120 90 345 700 424 514 482 251 153 158 167 137
2 111 89 371 715 451 472 502 215 148 162 165 137
3 107 92 418 609 458 437 463 200 139 160 159 132
4 105 95 502 640 408 478 443 217 139 155 154 133
5 103 102 544 685 381 535 468 202 151 161 153 128
6 100 103 495 595 380 522 489 198 161 162 150 126
7 96 104 470 574 396 513 500 211 166 169 149 124
8 97 109 397 539 379 887 443 209 164 172 146 122
9 97 164 348 440 369 677 435 207 158 181 143 116
10 91 222 389 399 384 541 428 181 174 188 144 115
11 89 219 457 385 401 514 419 185 211 187 144 119
12 88 186 573 415 406 515 404 197 223 180 148 118
13 90 209 668 449 458 577 390 217 192 170 149 121
14 91 211 780 443 415 574 389 230 183 165 150 123
15 89 194 819 408 394 570 363 234 208 164 148 125
16 90 189 627 393 370 546 326 212 189 163 148 126
17 91 210 552 376 355 677 311 208 177 168 147 128
18 96 223 615 362 362 595 341 201 177 168 148 136
19 116 346 652 362 411 619 312 181 173 167 151 126
20 105 355 618 378 367 671 273 175 184 164 154 118
21 106 298 537 374 395 856 284 184 232 158 152 113
22 99 246 483 411 453 874 312 177 310 155 151 110
23 95 255 546 483 449 777 312 181 238 160 149 108
24 90 272 546 480 428 633 306 156 194 163 145 105
25 87 231 534 424 404 640 266 152 180 167 140 106
26 85 221 535 402 438 596 263 147 166 170 137 111
27 84 262 588 401 537 645 236 154 155 165 136 122
28 84 312 763 392 671 684 220 178 146 159 136 133
29 83 491 904 389 574 628 217 203 142 153 136 136
30 85   829 389 562 527 225 172 144 151 136 145
31 88   774   527   241 158   162   138