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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
1 121 149 498 364 465 439 530 197 190 240 175 135
2 120 129 323 336 429 443 407 243 149 237 188 140
3 123 117 241 287 424 423 397 231 147 197 164 130
4 113 117 264 301 419 395 426 258 178 190 155 125
5 111 122 242 366 420 446 447 250 182 189 147 122
6 109 121 227 318 690 503 492 226 159 178 144 126
7 108 126 250 282 707 453 394 227 142 183 149 117
8 109 132 252 294 523 594 439 199 341 196 141 114
9 108 136 294 322 506 544 645 188 206 231 142 110
10 110 148 307 287 588 557 501 168 242 243 141 110
11 107 137 408 301 579 670 458 174 379 330 145 111
12 103 125 469 350 541 972 399 174 496 240 149 111
13 101 135 602 371 529 594 386 215 305 202 144 140
14 100 147 691 332 468 1,070 351 170 203 202 143 266
15 97 181 446 397 411 1,290 309 151 261 378 142 178
16 98 188 423 352 419 788 272 158 275 219 150 155
17 160 237 580 322 536 608 335 148 233 205 159 143
18 129 388 614 354 452 565 280 156 176 185 158 130
19 114 437 459 332 411 514 305 166 190 171 149 125
20 113 316 435 326 426 586 282 164 198 163 153 125
21 128 281 415 359 529 562 245 221 180 156 148 125
22 117 237 354 361 466 550 348 164 185 159 142 121
23 107 237 377 340 622 631 283 176 189 197 140 126
24 108 204 396 326 618 556 330 145 200 183 138 127
25 104 192 339 446 628 538 328 140 247 169 136 123
26 101 212 327 397 670 444 257 172 230 159 133 127
27 101 311 306 486 601 594 250 164 183 150 138 160
28 97 329 314 440 597 513 229 175 174 147 131 179
29 102 286 274 404 555 451 210 295 202 174 130 148
30 116   300 502 552 501 282 347 204 177 137 166
31 115   392   461   208 195   188   126