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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 08147000 Colorado Rv nr San Saba, TX


Lampasas County, Texas
Hydrologic Unit Code 12090201
Latitude  31°13'04", Longitude  98°33'51" NAD27
Drainage area 31,217  square miles
Contributing drainage area 19,819  square miles
Gage datum 1,096.29 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 1930-10-01 -> 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
1 762 347 602 413 1,650 1,620 1,070 313 403 1,570 522 323
2 586 392 549 368 1,620 1,590 1,110 524 409 976 519 331
3 399 381 591 319 1,760 1,760 1,010 488 539 524 521 319
4 341 615 556 385 1,610 1,980 898 470 857 776 907 284
5 352 749 563 582 1,590 2,320 1,140 360 919 1,880 722 266
6 396 728 556 827 1,420 2,590 932 539 860 1,600 528 281
7 372 570 653 909 1,430 2,270 862 500 925 1,390 517 363
8 387 477 556 812 1,010 1,930 962 242 1,100 1,470 406 388
9 341 513 516 566 1,110 1,750 1,350 228 1,390 1,180 395 310
10 324 528 642 512 1,420 1,830 1,630 281 1,430 867 346 304
11 308 498 575 398 1,710 1,380 1,540 374 1,850 652 355 289
12 337 393 515 336 2,050 1,420 1,170 376 1,560 553 330 272
13 351 372 497 379 2,400 1,480 664 372 949 854 312 323
14 289 333 471 464 2,760 1,340 499 448 431 1,840 349 291
15 289 307 409 479 2,660 1,720 478 420 492 1,810 313 296
16 275 342 483 425 2,630 1,800 430 358 618 2,160 309 303
17 340 384 570 634 2,710 1,590 643 345 1,150 2,420 447 278
18 375 481 435 671 2,640 1,540 625 321 1,460 1,910 559 277
19 325 671 442 765 3,270 1,360 546 382 1,620 1,180 555 273
20 421 599 488 989 3,010 1,080 679 345 1,630 934 547 451
21 597 719 708 1,280 2,570 1,170 778 558 2,570 828 473 728
22 662 565 866 1,140 2,320 964 1,390 603 2,170 601 411 746
23 783 609 572 856 1,660 1,220 2,520 546 1,480 604 416 746
24 724 697 434 912 1,610 1,090 2,590 466 1,190 643 484 661
25 476 774 393 959 1,810 972 2,550 446 1,250 789 462 535
26 400 801 443 945 2,100 875 1,980 473 856 909 393 464
27 389 718 488 1,560 1,600 864 1,450 360 965 775 340 419
28 370 713 564 1,840 1,380 1,100 1,140 325 1,440 771 317 410
29 444 1,200 482 1,890 1,600 1,210 633 426 1,240 680 298 419
30 385   416 1,800 1,570 1,140 369 611 1,620 706 315 423
31 345   439   1,480   357 431   615   453