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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
1 762 347 602 417 1,660 1,630 1,070 313 403 1,570 522 323
2 586 392 549 372 1,630 1,600 1,110 524 409 976 519 331
3 399 381 591 323 1,780 1,770 1,010 488 539 524 521 319
4 341 615 556 389 1,620 1,940 898 470 857 776 907 284
5 352 749 569 588 1,600 2,230 1,140 360 919 1,880 722 266
6 396 728 561 836 1,430 2,590 932 539 860 1,600 528 281
7 372 570 660 919 1,440 2,290 862 500 925 1,390 517 363
8 387 477 562 821 1,020 1,950 962 242 1,100 1,470 406 388
9 341 513 521 572 1,120 1,770 1,350 228 1,390 1,180 395 310
10 324 528 649 517 1,430 1,850 1,630 281 1,430 867 346 304
11 308 498 581 402 1,730 1,380 1,540 374 1,850 652 355 289
12 337 393 520 339 2,070 1,410 1,170 376 1,560 553 330 272
13 351 372 502 382 2,420 1,470 664 372 949 854 312 323
14 289 333 476 469 2,790 1,340 499 448 431 1,840 349 291
15 289 307 413 484 2,690 1,730 478 420 492 1,810 313 296
16 275 342 488 429 2,660 1,810 430 358 618 2,160 309 303
17 340 384 575 641 2,740 1,610 643 345 1,150 2,420 447 278
18 375 481 440 678 2,670 1,540 625 321 1,460 1,910 559 277
19 325 671 446 773 3,300 1,360 546 382 1,620 1,180 555 273
20 421 599 493 999 3,040 1,080 679 345 1,630 934 547 451
21 597 719 715 1,300 2,600 1,170 778 558 2,570 828 473 728
22 662 565 875 1,150 2,350 964 1,390 603 2,170 601 411 746
23 783 609 578 865 1,620 1,220 2,520 546 1,480 604 416 746
24 724 697 439 922 1,590 1,090 2,590 466 1,190 643 484 661
25 476 774 396 969 1,810 972 2,550 446 1,250 789 462 535
26 400 801 447 951 2,110 875 1,980 473 856 909 393 464
27 389 718 493 1,570 1,610 864 1,450 360 965 775 340 419
28 370 713 570 1,850 1,380 1,100 1,140 325 1,440 771 317 410
29 444 1,200 487 1,900 1,600 1,210 633 426 1,240 680 298 419
30 385   420 1,810 1,570 1,140 369 611 1,620 706 315 423
31 345   444   1,490   357 431   615   453