USGS Current Conditions for USGS 11456000 NAPA R NR ST HELENA CA x

USGS 11456000 NAPA R NR ST HELENA CA

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NWS Flood Stage: 18 ft.

Peak Chart

Available Parameters	Available Period
All 3 Available Parameters for this site
00060 Discharge	1987-10-02	2026-08-11
00065 Gage height	2007-10-01	2026-08-11
63160 Stream level, NAVD88	2023-08-11	2026-08-11

Days (7)

-- or --
Begin date

End date

Summary of all available data for this site
Instantaneous-data availability statement

Most recent instantaneous value: 0.35 08-11-2026 21:00 PDT

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**Daily discharge, cubic feet per second -- statistics for Aug 12 based on 84 water years of record more**
Min (2007)	25th percen- tile	Most Recent Instantaneous Value Aug 12	Median	Mean	75th percen- tile	Max (1941)
0.00	0.21	0.35	0.79	1.1	1.6	4.90

Most recent instantaneous value: 1.24 08-11-2026 21:00 PDT

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U.S. Department of the Interior | U.S. Geological Survey
Title: USGS Current Conditions for California
URL: https://waterdata.usgs.gov/ca/nwis/uv?

Page Contact Information: California Water Data Support Team
Page Last Modified: 2026-08-12 00:14:32 EDT
1.29 1.01 caww01