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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 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 -> 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
1 177 210 608 544 591 790 573 404 416 260 220 199
2 170 196 495 505 572 671 620 406 300 265 219 198
3 171 219 513 460 565 693 689 369 266 258 215 193
4 171 215 556 491 537 714 531 306 298 246 217 188
5 171 246 506 475 560 620 512 359 294 255 215 185
6 179 212 463 447 659 607 535 341 319 237 208 183
7 164 216 446 445 596 547 589 402 315 293 201 183
8 162 229 409 429 578 977 529 371 299 262 200 179
9 159 251 431 432 538 903 854 343 308 266 223 178
10 151 266 502 412 519 750 725 350 294 277 219 176
11 151 238 572 406 538 815 585 342 416 295 214 178
12 152 229 656 408 551 1,010 660 405 386 284 229 180
13 151 278 897 430 551 908 546 317 430 245 225 199
14 155 289 889 436 505 911 514 359 371 234 220 311
15 160 283 711 427 529 1,080 454 363 282 231 216 254
16 162 307 664 458 510 924 422 373 309 232 214 256
17 173 343 621 411 495 977 721 367 257 242 227 217
18 204 409 825 395 590 996 606 317 249 238 234 195
19 253 590 783 409 697 762 556 341 260 228 227 184
20 190 556 651 433 565 778 467 389 248 226 226 179
21 178 549 578 504 633 1,120 409 430 247 242 226 178
22 169 414 576 445 599 884 407 408 222 232 214 173
23 171 418 636 603 570 813 381 317 220 250 210 173
24 161 394 648 473 635 796 398 300 220 240 204 170
25 155 363 618 493 683 750 415 290 234 226 201 168
26 153 400 614 479 741 614 403 270 334 220 200 188
27 156 496 682 496 639 860 386 306 265 217 207 215
28 155 577 759 522 659 785 350 355 242 210 202 237
29 157 700 644 495 754 685 378 358 273 207 199 221
30 166   617 552 676 638 385 366 259 212 196 232
31 172   555   688   344 371   214   194