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USGS Daily Statistics for California

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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 11467510 SF GUALALA R NR THE SEA RANCH CA


Sonoma County, California
Hydrologic Unit Code 18010109
Latitude  38°42'33", Longitude 123°25'32" NAD27
Drainage area 161  square miles
Gage datum 40.0 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 water year of record in, ft3/s   (Calculation Period 1990-10-01 -> 2024-09-30)

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
1 390 684 565 543 105 44 14 4.2 1.8 1.4 90 254
2 315 776 816 496 101 41 13 4.2 1.7 1.5 73 599
3 447 866 801 422 120 39 13 4 1.7 1.6 46 419
4 1,460 961 771 408 122 42 12 3.9 1.7 2.8 57 250
5 1,220 961 686 434 307 52 11 3.7 1.6 7.5 33 213
6 892 762 1,180 654 144 43 11 3.6 1.6 5.4 26 315
7 1,070 1,290 928 687 114 37 11 3.5 1.5 3.5 71 282
8 1,500 1,210 570 421 96 34 11 3.5 1.6 2.8 50 218
9 1,430 1,440 521 337 87 33 10 3.3 1.5 2.5 107 190
10 1,300 832 1,200 280 80 30 9.9 3.3 1.5 3.9 74 441
11 955 455 737 354 75 28 9.5 3.2 1.5 9.1 49 1,060
12 773 361 823 545 70 27 9.1 3.1 1.5 6.1 37 396
13 927 714 1,030 447 65 25 8.7 3.1 1.5 9.6 30 333
14 1,040 1,100 1,450 350 61 24 8.3 2.9 1.5 17 26 322
15 670 755 877 286 68 23 7.9 2.8 1.5 6.4 24 873
16 843 870 809 267 207 22 7.5 2.7 1.5 6.2 35 915
17 1,080 790 636 225 191 21 7.2 2.6 1.5 6.5 33 571
18 1,240 794 484 202 152 21 6.9 2.5 1.5 6.5 36 684
19 1,140 741 438 188 206 20 6.8 2.4 2.7 7.8 148 851
20 1,460 872 734 191 127 19 6.6 2.4 4.1 11 133 1,000
21 1,440 605 527 217 113 18 6.4 2.4 3.1 7.7 150 1,280
22 1,660 810 650 180 94 17 6.2 2.3 2.5 17 80 1,100
23 1,160 663 620 157 78 16 5.9 2.3 2.1 17 82 1,050
24 628 789 929 138 68 16 5.6 2.2 1.8 929 116 547
25 1,050 748 680 126 64 16 5.3 2.1 1.7 303 60 537
26 1,190 2,040 649 118 67 18 5.1 2 1.6 76 90 468
27 682 1,620 1,020 180 65 17 4.9 1.9 1.6 42 142 777
28 465 690 1,030 159 63 16 4.8 1.9 1.6 58 129 574
29 395 325 761 132 55 17 4.7 1.8 1.5 124 203 929
30 360   568 116 50 15 4.5 1.8 1.5 110 695 904
31 656   540   47   4.4 1.7   72   714