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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 06609500 Boyer River at Logan, IA


Harrison County, Iowa
Hydrologic Unit Code 10230007
Latitude  41°38'30.1", Longitude  95°46'56.4" NAD83
Drainage area 871  square miles
Gage datum 1,010.50 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 -> 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
1 177 211 611 545 592 794 569 389 418 262 220 199
2 170 196 497 505 572 674 618 399 301 267 221 199
3 171 220 515 459 566 696 688 363 267 260 216 194
4 171 215 558 490 538 715 530 300 299 248 217 189
5 172 247 508 474 561 619 510 355 295 257 215 185
6 179 213 465 447 662 606 533 330 321 239 208 183
7 165 217 447 445 599 546 588 387 317 295 201 183
8 162 230 410 429 580 981 522 357 301 264 200 179
9 160 252 431 432 540 907 855 310 310 268 224 178
10 152 268 498 412 521 753 723 314 296 279 220 176
11 151 239 566 406 540 819 578 319 420 297 215 179
12 152 230 653 408 553 1,020 651 389 389 287 230 181
13 151 280 900 431 554 913 538 303 434 247 226 200
14 156 291 892 436 507 916 508 348 374 236 219 313
15 160 285 713 428 532 1,080 449 354 284 232 215 256
16 162 309 666 460 513 929 416 365 311 234 214 257
17 174 346 624 412 498 983 719 360 259 244 227 218
18 205 412 830 395 593 1,000 602 309 251 240 235 195
19 255 595 787 409 701 765 553 335 262 230 226 184
20 191 561 654 434 565 781 458 391 250 227 225 180
21 179 553 580 505 633 1,130 402 432 249 244 225 179
22 170 417 577 446 598 889 402 411 223 233 214 174
23 172 421 637 606 569 817 377 319 221 251 210 173
24 162 397 648 474 637 800 395 301 221 242 204 170
25 156 365 617 492 685 750 411 291 235 228 201 168
26 154 402 614 475 743 604 396 271 337 222 200 188
27 156 499 683 494 641 852 382 308 266 219 207 215
28 155 579 761 521 661 780 345 357 243 211 202 238
29 158 700 645 494 757 682 375 360 275 208 199 221
30 167   619 552 678 634 370 364 261 213 196 233
31 173   556   691   324 372   215   194