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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 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
1 366 471 522 522 105 43 14 4.2 1.8 1.4 90 268
2 286 697 737 484 100 41 13 4.2 1.7 1.5 73 634
3 368 832 753 413 121 39 13 4 1.7 1.6 46 441
4 1,480 692 743 396 112 42 12 3.9 1.7 2.8 57 261
5 1,250 615 600 427 309 52 11 3.7 1.6 7.5 33 223
6 913 657 1,090 667 142 43 11 3.6 1.6 5.4 26 331
7 1,100 1,270 880 705 111 37 11 3.5 1.5 3.5 71 294
8 1,560 1,210 533 425 94 34 11 3.5 1.6 2.8 50 225
9 1,490 1,470 493 337 85 33 10 3.3 1.5 2.5 107 197
10 1,360 835 1,220 279 78 30 9.9 3.3 1.5 3.9 74 464
11 987 443 714 358 73 28 9.5 3.2 1.5 9.1 49 1,120
12 799 348 796 563 68 26 9.1 3.1 1.5 6.1 37 418
13 833 728 1,030 448 64 25 8.7 3.1 1.5 9.6 30 351
14 780 1,140 1,490 347 60 24 8.3 2.9 1.5 17 26 339
15 619 747 887 283 67 23 7.9 2.8 1.5 6.4 24 923
16 832 883 822 265 215 22 7.5 2.7 1.5 6.2 35 968
17 1,070 734 643 222 198 21 7.2 2.6 1.5 6.5 33 603
18 1,270 615 485 199 157 21 6.9 2.5 1.5 6.5 36 701
19 1,170 457 440 185 214 20 6.8 2.4 2.7 7.8 148 748
20 1,420 645 757 189 130 19 6.6 2.4 4.1 11 133 816
21 1,230 494 539 218 115 18 6.4 2.4 3.1 7.7 150 1,300
22 1,260 762 667 180 96 17 6.2 2.3 2.5 17 80 1,130
23 1,090 631 614 155 79 16 5.9 2.3 2.1 17 82 1,100
24 576 779 939 136 68 16 5.6 2.2 1.8 929 116 568
25 1,050 744 686 124 64 16 5.3 2.1 1.7 303 60 560
26 1,210 2,120 660 116 68 18 5.1 2 1.6 76 90 489
27 679 1,690 1,040 182 65 17 4.9 1.9 1.6 42 142 770
28 456 701 995 160 64 16 4.8 1.9 1.6 58 129 506
29 387 245 728 132 55 17 4.7 1.8 1.5 124 214 821
30 354   500 116 50 15 4.5 1.8 1.5 110 735 768
31 564   505   47   4.4 1.7   72   680