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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 -> 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
1 702 511 707 345 92 30 9.1 2.8 1.6 1.3 5.7 177
2 557 408 583 313 82 30 8.7 2.7 1.5 1.4 5.5 275
3 421 578 528 294 90 29 8.5 2.7 1.5 1.4 5.3 209
4 733 496 555 241 81 27 8.3 2.5 1.4 1.3 5.9 253
5 797 449 537 226 75 28 8.2 2.3 1.4 1.3 6.5 192
6 515 497 616 250 70 25 7.8 2.4 1.4 1.5 11 139
7 396 784 502 242 65 24 7.4 2.5 1.5 1.5 16 119
8 561 786 438 216 62 23 7 2.4 1.3 1.4 11 137
9 820 711 694 196 66 22 6.9 2.4 1.4 1.4 14 148
10 653 539 748 190 61 21 6.3 2.3 1.4 1.8 51 175
11 594 414 578 279 55 20 6.1 2.3 1.4 1.9 51 244
12 646 447 468 291 53 20 5.7 2.3 1.4 35 57 219
13 661 701 632 249 50 19 5.3 2.2 1.5 72 53 149
14 855 868 556 225 48 18 5 2.1 1.4 34 73 228
15 621 814 481 193 47 17 5 2.1 1.4 11 45 282
16 876 824 521 183 47 16 4.9 2.1 1.4 6.4 88 403
17 615 1,120 426 164 44 16 4.7 2.1 1.5 5.1 108 225
18 567 1,070 356 153 53 15 4.6 2.1 1.5 3.8 72 186
19 582 875 331 145 71 14 4.5 2.2 1.6 3.4 44 334
20 720 768 420 131 51 13 4.3 2.2 1.6 3.1 60 426
21 985 755 367 125 45 13 4.2 2.2 1.5 3 111 385
22 791 567 527 115 43 13 4.1 2 1.4 3 78 453
23 662 555 405 113 39 12 4.1 1.9 1.4 3.1 70 476
24 686 479 432 115 37 11 3.9 1.9 1.4 55 98 473
25 559 528 445 110 35 11 3.7 1.8 1.7 57 56 395
26 656 571 393 100 34 11 3.5 1.7 2 14 42 325
27 663 695 353 93 34 10 3.3 1.7 2 6.8 50 377
28 446 651 397 94 42 9.9 3.3 1.6 1.5 6.5 106 399
29 497 410 335 95 39 9.8 3.3 1.6 1.5 6.7 103 532
30 532   382 89 38 9.6 3.2 1.6 1.5 6.6 166 458
31 569   442   33   2.9 1.6   6.2   834