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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 11273400 SAN JOAQUIN R AB MERCED R NR NEWMAN CA


Stanislaus County, California
Hydrologic Unit Code 18040001
Latitude  37°20'50.2", Longitude 120°58'30.5" NAD27
Drainage area 7,949  square miles
Gage datum 2.55 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 2009-10-01 -> 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
1 509 630 805 510 311 389 184 170 192 177 272 331
2 389 754 711 519 308 382 177 176 196 184 266 349
3 379 757 731 504 319 380 167 175 188 189 268 381
4 371 744 773 501 323 376 160 173 189 191 260 420
5 365 739 835 673 330 365 156 172 186 197 253 423
6 373 774 849 652 338 360 151 172 186 201 248 427
7 427 658 831 634 346 362 155 174 184 200 246 419
8 520 679 820 620 353 365 154 175 182 207 244 406
9 560 550 820 617 359 367 153 176 185 206 244 393
10 500 682 799 604 349 369 155 175 183 206 251 384
11 486 670 763 595 336 367 273 175 186 207 258 377
12 456 529 722 582 329 351 249 175 187 211 263 379
13 443 627 712 546 316 339 243 172 188 213 265 398
14 429 583 720 549 309 331 233 176 189 218 267 407
15 420 562 750 550 307 321 225 177 193 231 269 403
16 419 555 753 534 324 318 376 178 199 248 269 402
17 420 549 747 487 337 321 452 177 204 258 272 400
18 428 542 876 438 348 308 403 171 207 259 279 416
19 476 563 870 430 373 301 364 171 204 266 292 437
20 576 623 847 408 393 315 330 174 197 304 299 449
21 652 394 852 392 404 353 313 180 196 322 300 451
22 676 391 715 384 406 166 297 182 195 306 303 458
23 785 390 707 391 562 160 287 185 185 292 305 455
24 787 560 735 392 546 156 279 186 181 286 310 475
25 799 667 755 388 550 300 261 187 179 291 314 490
26 773 658 617 370 544 260 235 192 176 307 312 510
27 713 686 597 354 406 215 206 194 172 309 313 532
28 665 741 568 340 400 374 183 197 170 299 314 553
29 636 612 525 333 545 350 171 194 170 284 321 576
30 633   492 319 543 343 164 201 174 267 325 621
31 641   473   393   164 195   264   626