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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 9 - 11 years of record in, ft3/s   (Calculation Period 1990-10-01 -> 2017-09-30)

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
1 257 670 468 667 113 37 13 4.3 1.6 1.1 35 342
2 280 720 942 633 109 36 12 4.2 1.5 1.1 45 918
3 371 931 1,020 532 148 34 12 4.1 1.5 1.4 34 671
4 1,730 462 1,030 525 135 41 11 3.9 1.5 3.0 56 393
5 1,000 572 715 552 489 58 10 3.8 1.4 11 23 334
6 798 643 1,200 366 191 42 10 3.6 1.4 7.4 18 513
7 534 759 1,070 294 140 35 9.8 3.5 1.3 4.3 102 277
8 520 1,370 535 247 112 31 9.6 3.4 1.3 3.2 61 250
9 434 1,410 388 209 97 29 9.3 3.3 1.3 2.7 39 216
10 331 649 793 192 89 27 8.9 3.2 1.3 5.1 34 206
11 259 368 777 378 83 25 8.5 3.1 1.2 14 28 1,620
12 364 316 893 757 72 23 8.1 3.0 1.2 9.5 24 432
13 523 304 1,210 525 66 22 7.8 2.9 1.2 16 21 323
14 339 302 1,180 339 61 21 7.6 2.8 1.3 29 19 250
15 323 699 846 254 61 20 7.3 2.6 1.2 9.9 18 194
16 295 1,020 1,000 206 57 19 7.0 2.5 1.3 7.0 17 385
17 617 786 805 176 61 18 6.8 2.4 1.3 7.7 29 487
18 1,450 496 590 154 74 18 6.7 2.4 1.3 8.5 35 872
19 1,140 333 513 138 60 17 6.7 2.3 1.5 12 24 1,000
20 1,570 267 1,090 153 53 16 6.5 2.3 1.6 18 90 1,220
21 1,350 222 561 135 49 15 6.2 2.2 1.6 12 181 2,130
22 735 974 397 126 45 15 6.0 2.2 1.5 7.5 86 1,730
23 1,210 859 577 119 42 14 5.7 2.1 1.4 9.9 76 1,510
24 510 1,160 1,080 108 40 14 5.5 2.1 1.3 460 122 675
25 1,420 646 639 103 42 14 5.3 1.9 1.3 119 61 625
26 1,750 629 747 100 55 17 5.0 1.8 1.2 39 42 542
27 717 673 1,360 225 57 16 4.9 1.8 1.1 22 50 442
28 487 562 1,060 196 59 15 4.8 1.7 1.1 36 113 527
29 422 311 730 152 49 16 4.8 1.6 1.1 163 196 1,180
30 410   487 128 43 14 4.6 1.6 1.1 87 1,150 415
31 814   585   41   4.5 1.6   42   276