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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 10 - 12 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
1 252 643 471 641 123 39 14 4.5 1.6 1.1 124 337
2 271 702 892 606 118 38 13 4.4 1.5 1.1 76 856
3 415 1,050 958 512 151 36 13 4.2 1.5 1.4 51 628
4 1,890 654 977 503 138 42 12 4.1 1.5 3.0 64 373
5 1,020 689 728 525 456 57 11 3.9 1.4 11 31 317
6 794 843 1,150 378 187 43 11 3.8 1.4 7.4 25 478
7 611 1,880 1,030 505 140 36 10 3.7 1.3 4.3 100 263
8 1,400 1,810 542 363 114 33 10 3.6 1.3 3.2 62 244
9 927 2,220 403 291 100 32 9.8 3.5 1.3 2.7 41 250
10 1,530 1,180 762 252 92 29 9.3 3.4 1.3 5.1 35 602
11 1,040 583 742 406 86 27 8.9 3.1 1.2 14 30 1,610
12 627 437 842 746 77 25 8.5 3.0 1.2 9.5 26 463
13 638 386 1,120 585 71 24 8.2 2.9 1.2 16 23 342
14 421 361 1,090 384 66 22 8.0 2.8 1.3 29 21 283
15 379 703 791 294 65 21 7.7 2.6 1.2 9.2 19 1,140
16 338 1,100 932 243 62 20 7.4 2.5 1.3 8.8 19 721
17 616 952 750 213 64 20 7.1 2.4 1.3 9.1 29 571
18 1,620 819 555 206 76 19 7.0 2.4 1.3 9.2 35 872
19 1,530 599 484 180 62 19 6.9 2.3 1.5 11 220 967
20 1,900 918 1,000 195 56 17 6.7 2.3 1.6 17 206 1,150
21 1,560 691 585 169 51 16 6.4 2.2 1.6 11 233 1,960
22 1,370 1,130 423 157 47 16 6.2 2.2 1.5 6.8 115 1,600
23 1,440 932 571 146 45 15 5.9 2.1 1.4 9.1 110 1,420
24 676 1,160 1,230 134 43 15 5.7 2.1 1.3 419 142 669
25 1,420 675 748 126 45 15 5.5 1.9 1.3 146 80 610
26 1,680 645 779 121 57 18 5.2 1.8 1.2 54 125 528
27 730 674 1,330 233 58 16 5.2 1.8 1.1 32 176 431
28 509 563 1,030 203 60 16 5.0 1.7 1.1 72 172 503
29 439 311 717 161 50 17 5.0 1.6 1.1 186 224 1,090
30 421   491 138 45 15 4.8 1.6 1.1 167 1,080 398
31 779   572   42   4.7 1.6   106   270