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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 06809210 East Nishnabotna River near Atlantic, IA


Cass County, Iowa
Hydrologic Unit Code 10240003
Latitude  41°20'45.6", Longitude  95°04'36.7" NAD83
Drainage area 436  square miles
Gage datum 1,106.06 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 1960-10-01 -> 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
1 121 149 505 368 470 437 533 198 192 240 175 135
2 120 129 328 340 433 442 405 245 150 237 188 140
3 123 117 244 291 428 423 393 232 148 197 164 130
4 113 117 267 305 423 395 425 260 180 190 155 125
5 111 122 245 371 421 447 447 252 184 189 147 122
6 109 121 230 322 696 506 494 228 161 178 144 126
7 108 126 253 285 707 455 394 229 144 183 149 117
8 109 132 255 298 518 598 437 200 346 196 141 114
9 108 136 298 326 506 548 649 190 206 231 142 110
10 110 148 311 291 591 562 503 169 242 243 141 110
11 107 137 415 305 583 677 460 176 379 330 145 111
12 103 125 477 354 545 984 400 175 496 240 149 111
13 101 135 611 376 532 599 388 216 305 202 144 140
14 100 147 701 337 471 1,080 352 170 203 202 143 266
15 97 181 453 403 413 1,310 310 151 261 378 142 178
16 98 188 430 357 421 797 272 159 275 219 150 155
17 160 237 589 326 540 614 336 149 233 205 159 143
18 129 388 623 358 456 571 281 157 176 185 158 130
19 114 437 466 336 415 503 307 167 190 171 149 125
20 113 316 442 330 430 583 283 165 198 163 153 125
21 128 281 421 363 487 563 246 223 180 156 148 125
22 117 237 359 365 411 552 350 166 185 159 142 121
23 107 237 382 344 602 634 284 178 189 197 140 126
24 108 204 402 330 603 559 333 146 200 183 138 127
25 104 192 343 453 616 541 331 141 247 169 136 123
26 101 215 328 402 662 444 258 173 230 159 133 127
27 101 315 306 492 595 597 252 166 183 150 138 160
28 97 334 316 445 593 516 231 177 174 147 131 179
29 102 303 277 409 553 453 211 299 202 174 130 148
30 116   303 508 551 504 284 351 204 177 137 166
31 115   396   458   208 197   188   126