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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 08172000 San Marcos Rv at Luling, TX


Caldwell County, Texas
Hydrologic Unit Code 12100203
Latitude  29°39'58", Longitude  97°39'02" NAD27
Drainage area 838  square miles
Contributing drainage area 838  square miles
Gage datum 322.05 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 35 - 36 years of record in, ft3/s   (Calculation Period 1983-10-01 -> 2019-09-30)

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
1 420 395 418 442 338 876 761 298 263 220 829 383
2 413 407 414 390 331 675 729 294 256 217 483 387
3 506 452 439 389 352 913 913 293 240 236 432 403
4 433 721 684 388 439 1,180 878 288 244 250 617 518
5 408 773 680 535 380 791 742 278 239 226 684 426
6 397 553 536 528 442 569 938 270 263 248 470 377
7 382 489 475 435 346 1,010 581 266 325 232 423 357
8 381 475 445 540 334 801 503 265 283 226 372 498
9 398 441 426 415 380 770 434 260 364 452 368 401
10 429 451 436 386 421 1,050 407 256 326 270 345 401
11 397 443 424 385 428 908 386 250 274 262 326 371
12 380 513 894 505 361 827 391 247 295 266 318 404
13 393 415 737 400 331 738 365 244 278 341 322 379
14 423 392 554 430 411 652 345 239 249 307 354 356
15 414 388 452 402 422 594 367 236 258 285 388 404
16 449 384 466 376 422 503 364 238 254 276 867 503
17 438 378 544 385 480 462 393 256 318 396 703 399
18 628 425 463 505 672 513 455 305 255 2,750 940 375
19 480 383 430 406 498 487 379 257 258 808 532 393
20 408 474 504 377 633 429 377 241 271 665 476 453
21 388 595 471 375 441 441 732 261 266 422 466 810
22 391 551 429 364 534 638 688 244 242 430 1,260 1,360
23 388 481 418 340 514 1,090 437 256 245 498 1,200 1,120
24 371 542 388 457 1,160 611 441 251 242 663 694 652
25 748 595 374 430 871 500 484 245 246 651 627 501
26 500 596 368 389 803 471 440 268 237 494 531 489
27 584 491 446 373 609 439 368 659 281 416 512 503
28 490 448 482 357 509 423 349 469 245 376 475 527
29 427 398 587 331 567 448 339 270 328 349 415 497
30 426   429 327 728 600 349 249 240 398 395 444
31 406   535   931   318 297   1,560   446