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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 11458000 NAPA R NR NAPA CA


Napa County, California
Hydrologic Unit Code 18050002
Latitude  38°22'06", Longitude 122°18'08" NAD27
Drainage area 218  square miles
Gage datum 24.74 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 1959-10-01 -> 2021-09-30)

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
1 713 532 719 350 95 31 9.2 2.9 1.7 1.4 5.7 186
2 571 423 597 318 85 31 8.9 2.8 1.6 1.4 5.4 289
3 431 601 543 299 93 29 8.7 2.8 1.5 1.5 5.4 219
4 748 516 573 245 83 28 8.5 2.5 1.5 1.4 6 266
5 755 464 552 230 77 28 8.4 2.4 1.5 1.4 6.7 202
6 502 516 635 257 72 26 7.9 2.5 1.5 1.6 11 146
7 395 818 515 248 66 25 7.5 2.6 1.5 1.5 17 125
8 541 820 447 220 63 24 7.2 2.5 1.4 1.5 11 144
9 760 741 709 200 68 23 7 2.4 1.4 1.5 12 155
10 626 561 662 195 62 21 6.4 2.4 1.5 1.8 51 183
11 569 431 560 288 57 21 6.2 2.4 1.5 2 52 254
12 617 465 450 302 54 20 5.8 2.3 1.5 37 59 227
13 647 732 615 257 51 19 5.4 2.3 1.5 76 55 134
14 801 908 504 232 49 18 5.1 2.2 1.5 36 77 217
15 574 851 446 199 48 17 5.1 2.1 1.5 12 47 286
16 866 862 513 188 48 17 5 2.1 1.5 6.7 93 394
17 612 1,170 424 168 45 16 4.8 2.2 1.6 5.4 115 225
18 572 1,120 356 157 54 15 4.7 2.2 1.6 4 76 188
19 591 915 330 149 73 14 4.6 2.3 1.7 3.6 47 346
20 740 804 425 134 52 14 4.4 2.3 1.6 3.3 63 443
21 1,020 789 360 129 46 13 4.3 2.2 1.6 3.1 116 401
22 820 592 492 118 44 13 4.2 2.1 1.5 3.2 81 469
23 686 579 393 116 40 12 4.2 1.9 1.4 3.3 73 474
24 712 497 432 118 38 11 4 1.9 1.4 5.5 103 475
25 580 549 451 113 36 11 3.8 1.9 1.8 9.2 58 397
26 682 594 400 103 35 11 3.5 1.8 2.1 7.4 44 324
27 689 718 360 95 34 10 3.3 1.8 2.1 4.4 52 363
28 462 661 399 96 43 10 3.4 1.7 1.6 5.4 111 401
29 516 410 328 98 41 9.9 3.4 1.7 1.5 6.3 108 545
30 553   381 91 39 9.7 3.3 1.7 1.5 6.5 174 461
31 592   449   34   3 1.7   6.2   833