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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 -> 2018-09-30)

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
1 230 600 452 600 121 39 14 4.5 1.7 1.2 114 315
2 248 651 843 567 116 38 13 4.4 1.7 1.3 69 789
3 379 963 910 479 146 36 13 4.2 1.7 1.5 47 579
4 1,720 605 921 470 134 42 12 4.1 1.7 3.0 59 345
5 936 636 685 489 422 57 11 3.9 1.6 10 28 294
6 739 775 1,070 839 177 43 11 3.8 1.6 7.0 23 441
7 564 1,720 954 864 134 36 10 3.7 1.5 4.1 92 244
8 1,360 1,650 509 472 110 33 10 3.6 1.5 3.2 57 226
9 1,200 2,020 381 345 100 32 9.8 3.5 1.5 2.7 39 231
10 1,450 1,080 705 286 92 29 9.3 3.4 1.5 4.8 34 553
11 977 536 686 416 86 27 8.9 3.3 1.4 13 29 1,480
12 592 403 775 725 77 25 8.5 3.1 1.4 8.1 25 426
13 597 356 1,070 568 71 24 8.2 3.0 1.4 13 21 316
14 396 333 1,040 380 66 22 8.0 2.9 1.5 24 20 261
15 356 644 768 295 65 21 7.7 2.8 1.4 8.6 19 1,050
16 321 1,000 933 258 62 20 7.4 2.7 1.5 8.3 38 663
17 574 870 748 227 64 20 7.1 2.6 1.5 8.5 36 525
18 1,480 749 553 215 76 19 7.0 2.5 1.4 8.6 35 795
19 1,420 549 477 189 62 19 6.9 2.5 1.6 11 202 881
20 1,760 839 943 199 56 17 6.7 2.4 1.7 15 189 1,050
21 1,440 632 613 173 51 16 6.4 2.4 1.8 10 218 1,780
22 1,570 1,030 737 160 47 16 6.2 2.3 1.7 6.6 109 1,470
23 1,390 851 645 149 45 15 5.9 2.3 1.5 8.5 103 1,310
24 683 1,060 1,200 136 43 15 5.7 2.3 1.4 384 131 615
25 1,390 617 743 128 45 15 5.5 2.1 1.4 134 75 560
26 1,590 590 757 123 57 18 5.2 2.0 1.4 50 125 485
27 706 617 1,250 223 58 16 5.2 1.9 1.3 29 202 394
28 495 516 968 195 60 16 5.0 1.9 1.3 66 177 459
29 426 311 679 157 50 17 5.0 1.8 1.3 171 216 990
30 405   469 136 45 15 4.8 1.7 1.3 153 995 363
31 726   540   42   4.7 1.7   97   248