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USGS Daily Statistics for Texas

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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 08183500 San Antonio Rv nr Falls City, TX


Karnes County, Texas
Hydrologic Unit Code 12100303
Latitude  28°57'05", Longitude  98°03'50" NAD27
Drainage area 2,113  square miles
Contributing drainage area 2,113  square miles
Gage datum 285.26 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 1924-10-01 -> 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
1 392 393 374 435 544 751 605 280 444 535 479 351
2 380 398 381 394 537 858 612 277 431 394 518 342
3 363 433 379 381 557 894 657 293 371 348 463 349
4 377 512 379 390 541 905 740 312 341 350 457 374
5 380 625 401 393 531 941 859 337 374 365 519 426
6 375 647 459 443 542 818 1,060 358 417 478 583 442
7 370 563 444 483 576 838 1,110 373 452 468 523 426
8 367 488 421 465 544 801 986 347 464 395 409 394
9 348 437 380 441 533 656 794 341 555 405 379 376
10 373 416 377 386 585 598 616 353 651 460 418 366
11 400 434 383 366 586 670 511 361 614 513 412 350
12 412 428 377 365 569 778 460 293 550 431 396 342
13 397 443 414 354 557 796 432 268 459 421 355 342
14 382 445 449 363 618 825 392 264 400 428 346 365
15 373 409 444 365 720 819 371 265 495 412 350 378
16 406 419 425 383 614 795 381 283 440 419 350 407
17 409 396 454 390 661 702 434 325 449 450 400 404
18 406 388 427 436 640 641 504 410 523 444 436 356
19 437 407 400 504 586 653 605 501 504 646 461 347
20 538 435 385 547 617 620 610 497 441 960 491 383
21 556 436 441 561 699 572 521 467 455 810 434 441
22 528 483 413 602 654 543 443 347 513 530 405 491
23 514 496 385 627 604 540 415 312 491 443 420 551
24 487 515 373 547 624 553 407 346 513 513 556 547
25 444 500 379 539 670 562 404 320 525 608 520 461
26 464 455 359 583 748 622 420 343 446 749 467 390
27 469 454 368 622 771 718 439 305 506 688 420 360
28 454 415 416 593 794 696 412 309 782 519 396 377
29 440 380 432 558 795 522 366 356 1,050 431 403 404
30 404   434 555 765 500 345 358 783 416 401 394
31 402   448   756   301 438   445   378