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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
1 177 211 617 548 588 790 571 389 418 262 220 199
2 170 196 502 508 569 671 618 399 301 267 221 199
3 171 220 520 461 560 694 689 363 267 260 216 194
4 171 215 564 493 528 713 530 300 299 248 217 189
5 172 247 512 477 551 618 511 355 295 257 215 185
6 179 213 469 449 655 605 534 330 321 239 208 183
7 165 217 451 447 576 545 590 387 317 295 201 183
8 162 230 413 432 564 985 523 357 301 264 200 179
9 160 252 434 434 528 909 860 310 310 268 224 178
10 152 268 503 414 514 754 727 314 296 279 220 176
11 151 239 571 409 535 821 580 319 420 297 215 179
12 152 230 659 411 549 1,020 654 389 389 287 230 181
13 151 280 909 433 551 917 540 303 434 247 226 200
14 156 291 901 439 504 920 509 348 374 236 219 313
15 160 285 719 430 530 1,090 450 354 284 232 215 256
16 162 309 673 463 511 932 417 365 311 234 214 257
17 174 346 630 414 496 986 723 360 259 244 227 218
18 205 412 838 397 593 1,000 605 309 251 240 235 195
19 255 595 795 411 703 765 556 335 262 230 226 184
20 191 561 660 437 566 781 459 391 250 227 225 180
21 179 553 585 509 593 1,130 401 432 249 244 225 179
22 170 417 582 448 577 890 403 411 223 233 214 174
23 172 421 643 610 559 817 377 319 221 251 210 173
24 162 397 654 478 629 801 395 301 221 242 204 170
25 156 365 622 496 679 751 411 291 235 228 201 168
26 154 402 617 478 738 598 396 271 337 222 200 188
27 156 499 683 491 635 853 382 308 266 219 207 215
28 155 585 764 519 657 782 345 357 243 211 202 238
29 158 727 647 491 755 683 375 360 275 208 199 221
30 167   621 552 676 636 370 364 261 213 196 233
31 173   558   687   324 372   215   194