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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 08068090 W Fk San Jacinto Rv abv Lk Houston nr Porter, TX


Montgomery County, Texas
Hydrologic Unit Code 12040101
Latitude  30°08'28.2", Longitude  95°20'17.6" NAD83
Drainage area 962  square miles
Contributing drainage area 962  square miles
Gage datum 0 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 1983-10-01 -> 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
1 768 790 1,010 867 1,300 1,220 614 125 450 141 643 355
2 779 715 1,090 596 1,840 1,260 536 130 281 116 403 277
3 959 669 869 489 2,870 1,170 464 151 203 93 341 244
4 712 844 812 403 3,150 1,080 372 116 148 103 554 278
5 650 1,000 921 479 2,080 904 375 92 123 189 637 352
6 651 1,080 713 565 1,570 714 317 97 120 190 1,020 386
7 686 856 642 669 1,060 647 237 80 125 156 1,180 384
8 713 863 563 978 845 570 351 114 129 128 688 658
9 642 731 642 1,060 768 576 379 100 117 116 493 622
10 750 701 952 999 736 564 297 87 105 199 346 771
11 637 966 1,020 804 590 553 288 81 111 160 287 780
12 611 1,000 1,190 643 652 546 286 84 115 181 547 776
13 688 1,090 1,160 492 917 571 348 77 274 252 403 873
14 635 1,130 995 514 1,450 481 269 75 653 261 357 804
15 788 935 851 684 1,430 543 268 104 348 229 262 730
16 983 718 737 585 1,750 546 290 128 216 368 214 813
17 1,100 666 655 510 1,820 519 225 129 152 1,150 309 885
18 1,270 671 538 1,160 2,050 408 195 129 160 3,200 523 942
19 1,480 636 474 1,470 1,940 416 193 120 533 3,640 311 914
20 1,490 602 589 1,250 1,410 700 187 127 486 2,050 433 784
21 1,430 799 759 1,260 1,010 974 184 152 276 892 438 694
22 1,270 1,030 820 980 843 1,080 180 157 199 551 348 752
23 1,220 1,210 798 677 647 661 276 217 218 519 415 769
24 1,330 1,220 792 519 546 529 469 181 159 468 428 709
25 1,780 1,410 739 411 617 536 390 151 134 640 897 718
26 2,000 1,500 552 495 837 449 337 207 116 722 1,030 690
27 1,930 1,240 402 563 1,400 686 259 728 135 901 717 916
28 1,520 1,090 387 760 2,540 628 162 1,810 126 684 600 923
29 1,230 1,070 766 708 2,690 610 148 3,610 173 672 478 923
30 1,200   915 900 1,930 658 122 2,100 194 710 414 869
31 900   1,070   1,520   116 994   639   805