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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 -> 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
1 416 431 435 448 605 905 661 348 482 343 616 403
2 414 459 421 420 701 992 779 419 346 345 602 418
3 450 570 429 457 547 1,070 820 423 369 341 525 572
4 432 879 528 448 508 1,130 1,240 506 441 383 666 637
5 408 774 535 605 585 1,230 1,490 518 464 462 717 513
6 398 621 524 523 721 821 1,520 438 497 410 622 459
7 406 529 474 454 715 822 1,400 433 516 451 491 411
8 388 484 432 483 754 700 789 528 825 495 461 427
9 473 495 447 400 609 724 650 462 755 626 519 420
10 430 498 436 419 519 986 584 334 790 632 495 395
11 460 475 437 398 593 964 566 360 629 525 403 388
12 430 487 482 379 584 834 521 317 540 528 381 385
13 415 452 523 415 792 891 437 339 521 477 375 410
14 404 471 578 442 689 992 429 322 614 507 390 394
15 483 469 496 418 735 880 459 346 467 551 405 414
16 498 441 535 524 773 778 738 385 525 535 541 432
17 442 427 487 480 687 795 985 812 588 539 551 405
18 665 491 425 677 789 809 943 672 535 1,380 578 394
19 685 456 448 588 797 705 621 630 475 1,070 560 521
20 573 513 508 669 865 628 515 507 480 702 512 533
21 617 480 476 730 672 644 562 462 484 527 463 560
22 539 495 446 518 692 692 579 452 587 537 529 672
23 537 504 441 494 595 763 500 459 584 595 646 583
24 499 539 447 614 866 671 528 387 448 781 601 497
25 604 495 418 709 908 712 558 377 391 1,020 538 428
26 507 521 417 675 1,050 744 610 327 515 717 508 395
27 534 456 452 490 955 562 503 332 959 572 511 406
28 450 429 527 453 703 521 463 353 606 472 520 419
29 428 418 560 491 647 750 384 379 465 502 455 421
30 430   478 538 803 719 348 404 417 533 407 418
31 446   536   956   337 518   602   447