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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 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 -> 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
1 119 90 342 690 433 543 494 252 153 157 167 136
2 110 89 367 705 462 502 513 217 148 161 164 137
3 107 92 414 602 471 469 473 202 140 159 158 132
4 105 95 498 632 421 506 452 218 139 154 154 132
5 103 102 534 676 394 556 475 203 152 160 153 127
6 100 103 486 588 391 536 496 199 160 161 150 126
7 96 104 462 567 409 525 506 211 165 169 148 124
8 97 109 391 532 396 893 449 210 164 171 145 122
9 97 163 343 435 390 684 440 208 158 180 143 116
10 91 221 384 395 407 548 433 182 174 187 143 115
11 89 217 450 382 421 521 424 186 210 186 143 118
12 88 185 563 410 420 520 408 198 222 179 147 117
13 90 208 656 444 466 581 393 218 192 169 149 121
14 91 210 766 437 422 577 392 230 183 164 150 123
15 89 192 804 403 400 573 366 234 207 163 148 125
16 90 188 616 390 377 549 330 213 188 162 147 126
17 91 208 543 377 360 681 314 209 176 167 146 128
18 96 221 604 366 367 609 343 201 176 168 147 136
19 115 343 640 370 417 634 314 181 172 166 151 126
20 105 352 606 385 372 683 276 175 183 163 154 117
21 106 296 528 378 405 867 286 184 230 157 152 113
22 99 244 474 413 470 911 313 178 308 155 151 110
23 95 253 536 482 465 1,040 313 182 237 159 148 108
24 90 270 536 479 446 744 307 157 193 162 145 105
25 87 229 525 423 421 685 268 153 179 166 140 105
26 85 220 528 403 452 622 264 147 166 169 137 111
27 84 260 580 402 547 663 238 154 154 164 136 121
28 84 310 753 393 679 699 222 178 145 159 135 133
29 83 491 889 393 581 643 219 202 141 153 136 136
30 85   817 394 568 540 228 172 144 151 136 145
31 88   763   534   243 158   162   138