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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 08181800 San Antonio Rv nr Elmendorf, TX


Bexar County, Texas
Hydrologic Unit Code 12100301
Latitude  29°13'19", Longitude  98°21'20" NAD27
Drainage area 1,743  square miles
Contributing drainage area 1,743  square miles
Gage datum 380.00 feet above NGVD29
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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 1962-10-01 -> 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
1 411 427 430 448 605 905 661 348 482 341 609 399
2 409 455 417 420 701 992 779 419 346 341 594 413
3 445 564 425 457 547 1,070 820 423 369 337 519 565
4 426 868 522 448 508 1,130 1,240 506 441 378 657 629
5 403 765 529 605 585 1,230 1,490 518 464 457 729 508
6 394 614 518 523 721 821 1,520 438 497 405 620 454
7 402 524 469 454 715 822 1,400 433 516 445 487 406
8 384 480 428 483 754 700 789 528 825 489 457 423
9 468 490 443 400 609 724 650 462 755 617 514 415
10 435 493 431 419 519 986 584 334 790 624 490 391
11 458 471 433 398 593 964 566 360 629 518 399 384
12 427 484 477 379 584 834 521 317 540 521 377 381
13 412 449 523 415 792 891 437 339 521 471 371 405
14 401 466 578 442 689 992 429 322 614 500 386 391
15 478 464 496 418 735 880 459 346 467 544 400 410
16 492 437 535 524 773 778 738 385 525 528 534 429
17 437 423 487 480 687 795 985 812 588 532 544 402
18 656 486 425 677 789 809 943 672 535 1,360 571 391
19 676 451 448 588 797 705 621 630 475 1,050 554 516
20 567 508 508 669 865 628 515 507 480 692 506 527
21 611 475 476 730 672 644 562 462 484 521 457 554
22 534 490 446 518 692 692 579 452 587 531 522 663
23 531 499 441 494 595 763 500 459 584 589 637 576
24 493 533 447 614 866 671 528 387 448 771 594 492
25 596 490 418 709 908 712 558 377 391 1,010 531 423
26 500 515 417 675 1,050 744 610 327 515 708 502 392
27 528 451 452 490 955 562 503 332 959 565 505 403
28 445 425 527 453 703 521 463 353 606 467 513 415
29 423 418 560 491 647 750 384 379 465 497 449 416
30 425   478 538 803 719 348 404 413 527 403 413
31 442   536   956   337 518   595   442