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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 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
1 785 808 1,040 890 1,300 1,220 614 125 450 141 659 364
2 797 731 1,120 610 1,840 1,260 536 130 281 116 412 283
3 983 685 891 500 2,870 1,170 464 151 203 93 345 249
4 729 865 824 412 3,150 1,080 372 116 148 103 562 284
5 665 1,030 924 489 2,080 904 375 92 123 189 624 359
6 666 1,110 716 572 1,570 714 317 97 120 190 1,010 395
7 702 878 654 683 1,060 647 237 80 125 156 1,210 393
8 731 885 574 1,000 845 570 351 114 129 128 702 675
9 658 749 628 1,090 768 576 379 100 117 116 503 638
10 698 719 951 999 736 564 297 87 105 199 340 791
11 609 988 1,040 804 590 553 288 81 111 160 289 801
12 603 1,020 1,220 643 652 546 286 84 115 181 559 797
13 693 1,100 1,190 492 917 571 348 77 274 252 411 897
14 643 1,160 1,020 514 1,450 481 269 75 653 261 365 824
15 804 956 871 684 1,430 543 268 104 348 229 267 741
16 1,010 731 755 585 1,750 546 290 128 216 368 218 833
17 1,130 679 670 510 1,820 519 225 129 152 1,150 314 908
18 1,300 685 550 1,160 2,050 408 195 129 160 3,290 530 964
19 1,520 622 484 1,470 1,940 416 193 120 533 3,740 316 937
20 1,530 591 604 1,250 1,410 700 187 127 486 2,110 443 805
21 1,470 808 778 1,260 1,010 974 184 152 276 917 448 712
22 1,300 1,050 842 980 843 1,080 180 157 199 565 356 772
23 1,250 1,230 819 677 647 661 276 217 218 533 425 789
24 1,370 1,250 812 519 546 529 469 181 159 480 439 728
25 1,830 1,440 757 411 617 536 390 151 134 657 921 705
26 2,060 1,530 565 495 837 449 337 207 116 742 1,050 681
27 1,980 1,270 410 563 1,400 686 259 728 135 926 737 918
28 1,560 1,110 392 760 2,540 628 162 1,810 126 703 616 927
29 1,260 1,070 783 708 2,690 610 148 3,610 173 690 491 934
30 1,230   938 900 1,930 658 122 2,100 194 729 425 881
31 920   1,100   1,520   116 994   656   821