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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 -> 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
1 120 147 492 359 460 433 525 198 190 237 174 134
2 118 128 319 333 425 437 404 243 149 234 186 138
3 121 116 238 284 421 418 394 230 147 195 162 128
4 111 116 261 298 415 391 422 257 178 187 153 123
5 109 121 239 362 416 441 443 249 182 186 146 120
6 108 120 225 315 682 497 489 226 159 176 143 125
7 107 124 247 279 699 448 391 228 142 180 148 116
8 108 131 249 291 517 586 436 200 341 193 139 113
9 106 134 291 318 501 537 639 189 203 228 140 109
10 109 146 306 283 581 550 496 177 239 240 140 109
11 106 135 412 297 572 662 463 185 374 325 144 110
12 102 124 468 345 534 959 405 179 489 236 147 110
13 100 133 596 366 522 586 389 217 301 199 143 138
14 99 145 684 328 462 1,050 352 172 201 199 143 262
15 96 179 443 392 406 1,280 310 153 257 372 142 176
16 97 186 419 347 414 777 273 160 271 216 149 154
17 158 233 574 318 529 600 334 150 230 202 157 141
18 127 382 606 350 447 558 280 156 173 182 156 128
19 112 431 454 328 407 508 304 166 188 169 148 124
20 111 312 430 322 421 578 285 164 195 161 152 123
21 126 277 410 354 523 555 250 221 177 154 147 124
22 115 233 351 356 460 543 348 164 183 157 140 120
23 105 234 373 336 614 622 283 176 187 194 138 125
24 107 201 392 322 610 551 330 145 197 181 137 126
25 103 190 336 445 620 544 328 140 244 167 134 122
26 99 210 323 399 661 449 257 172 226 157 132 126
27 100 308 303 483 593 592 250 164 180 148 136 158
28 96 326 310 437 589 511 229 175 171 145 129 177
29 101 286 271 401 548 449 210 295 199 172 129 146
30 115   297 497 545 498 283 347 201 176 135 164
31 114   387   455   211 195   186   125