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Hydrograph River at a Glance Download
Atherton Channel upstr miles N of Caltrain Stage (ft)Observed: 0.06 ft at 11:17PM Oct 21, 2021Observed: 0.18 ft at 6:09AM Oct 22, 2021Observed: 0.45 ft at 6:10AM Oct 22, 2021Observed: 0.69 ft at 6:12AM Oct 22, 2021Observed: 0.9 ft at 6:15AM Oct 22, 2021Observed: 1.12 ft at 6:22AM Oct 22, 2021Observed: 1.22 ft at 6:37AM Oct 22, 2021Observed: 1.02 ft at 6:51AM Oct 22, 2021Observed: 0.83 ft at 7:06AM Oct 22, 2021Observed: 0.64 ft at 7:21AM Oct 22, 2021Observed: 0.45 ft at 7:36AM Oct 22, 2021Observed: 0.33 ft at 7:51AM Oct 22, 2021Observed: 0.22 ft at 8:08AM Oct 22, 2021Observed: 0.12 ft at 8:47AM Oct 22, 2021Observed: 0.06 ft at 11:17AM Oct 22, 2021Observed: 0.06 ft at 11:17PM Oct 22, 2021Observed: 0.06 ft at 11:17AM Oct 23, 2021Observed: 0.06 ft at 11:17PM Oct 23, 2021Observed: 0.18 ft at 1:34AM Oct 24, 2021Observed: 0.4 ft at 1:40AM Oct 24, 2021Observed: 0.54 ft at 1:55AM Oct 24, 2021Observed: 0.64 ft at 3:19AM Oct 24, 2021Observed: 0.74 ft at 4:14AM Oct 24, 2021Observed: 0.97 ft at 4:21AM Oct 24, 2021Observed: 1.18 ft at 4:30AM Oct 24, 2021Observed: 1.29 ft at 4:45AM Oct 24, 2021Observed: 1.18 ft at 5:02AM Oct 24, 2021Observed: 1.07 ft at 5:17AM Oct 24, 2021Observed: 1.18 ft at 5:50AM Oct 24, 2021Observed: 1.38 ft at 5:58AM Oct 24, 2021Observed: 1.5 ft at 6:13AM Oct 24, 2021Observed: 1.38 ft at 7:58AM Oct 24, 2021Observed: 1.23 ft at 8:13AM Oct 24, 2021Observed: 1.1 ft at 8:28AM Oct 24, 2021Observed: 1 ft at 8:57AM Oct 24, 2021Observed: 0.9 ft at 9:22AM Oct 24, 2021Observed: 1.02 ft at 10:02AM Oct 24, 2021Observed: 1.24 ft at 10:11AM Oct 24, 2021Observed: 1.45 ft at 10:19AM Oct 24, 2021Observed: 1.55 ft at 10:38AM Oct 24, 2021Observed: 1.44 ft at 11:02AM Oct 24, 2021Observed: 1.31 ft at 11:17AM Oct 24, 2021Observed: 1.17 ft at 11:32AM Oct 24, 2021Observed: 1.06 ft at 11:47AM Oct 24, 2021Observed: 1.18 ft at 12:34PM Oct 24, 2021Observed: 1.29 ft at 12:55PM Oct 24, 2021Observed: 1.46 ft at 1:10PM Oct 24, 2021Observed: 1.67 ft at 1:18PM Oct 24, 2021Observed: 1.84 ft at 1:33PM Oct 24, 2021Observed: 1.96 ft at 2:04PM Oct 24, 2021Observed: 2.16 ft at 2:13PM Oct 24, 2021Observed: 2.35 ft at 2:28PM Oct 24, 2021Observed: 2.24 ft at 2:45PM Oct 24, 2021Observed: 2.02 ft at 2:58PM Oct 24, 2021Observed: 1.86 ft at 3:13PM Oct 24, 2021Observed: 1.98 ft at 3:52PM Oct 24, 2021Observed: 2.18 ft at 4:02PM Oct 24, 2021Observed: 2.39 ft at 4:11PM Oct 24, 2021Observed: 2.6 ft at 4:18PM Oct 24, 2021Observed: 2.82 ft at 4:24PM Oct 24, 2021Observed: 3.02 ft at 4:29PM Oct 24, 2021Observed: 3.22 ft at 4:39PM Oct 24, 2021Observed: 3.33 ft at 5:24PM Oct 24, 2021Observed: 3.57 ft at 5:36PM Oct 24, 2021Observed: 3.78 ft at 5:49PM Oct 24, 2021Observed: 3.98 ft at 6:00PM Oct 24, 2021Highest Observation: 4.15 ft at 6:15PM Oct 24, 2021Observed: 4.02 ft at 6:34PM Oct 24, 2021Observed: 3.82 ft at 6:44PM Oct 24, 2021Observed: 3.59 ft at 6:57PM Oct 24, 2021Observed: 3.36 ft at 7:10PM Oct 24, 2021Observed: 3.24 ft at 7:25PM Oct 24, 2021Observed: 3.14 ft at 7:43PM Oct 24, 2021Observed: 3.26 ft at 8:25PM Oct 24, 2021Observed: 3.37 ft at 8:41PM Oct 24, 2021Observed: 3.26 ft at 9:02PM Oct 24, 2021Observed: 3.12 ft at 9:17PM Oct 24, 2021Observed: 2.99 ft at 9:32PM Oct 24, 2021Observed: 2.86 ft at 9:48PM Oct 24, 2021Observed: 2.74 ft at 10:30PM Oct 24, 2021Observed: 2.84 ft at 11:00PM Oct 24, 2021Observed: 2.84 ft at 11:17PM Oct 24, 2021Observed: 2.74 ft at 11:43PM Oct 24, 2021Observed: 2.63 ft at 12:02AM Oct 25, 2021Observed: 2.53 ft at 12:26AM Oct 25, 2021Observed: 2.64 ft at 12:50AM Oct 25, 2021Observed: 2.74 ft at 1:54AM Oct 25, 2021Observed: 2.9 ft at 2:09AM Oct 25, 2021Observed: 2.79 ft at 2:27AM Oct 25, 2021Observed: 2.58 ft at 2:42AM Oct 25, 2021Observed: 2.38 ft at 2:57AM Oct 25, 2021Observed: 2.23 ft at 3:12AM Oct 25, 2021Observed: 2.12 ft at 3:27AM Oct 25, 2021Observed: 2.01 ft at 3:57AM Oct 25, 2021Observed: 1.91 ft at 4:50AM Oct 25, 2021Observed: 1.78 ft at 5:05AM Oct 25, 2021Observed: 1.64 ft at 5:20AM Oct 25, 2021Observed: 1.54 ft at 5:43AM Oct 25, 2021Observed: 1.44 ft at 6:32AM Oct 25, 2021Observed: 1.33 ft at 7:00AM Oct 25, 2021Observed: 1.22 ft at 7:15AM Oct 25, 2021Observed: 1.12 ft at 8:13AM Oct 25, 2021Observed: 1.24 ft at 8:28AM Oct 25, 2021Observed: 1.4 ft at 8:43AM Oct 25, 2021Observed: 1.3 ft at 9:00AM Oct 25, 2021Observed: 1.12 ft at 9:15AM Oct 25, 2021Observed: 1 ft at 9:30AM Oct 25, 2021Observed: 0.9 ft at 9:46AM Oct 25, 2021Observed: 0.8 ft at 10:08AM Oct 25, 2021Observed: 0.7 ft at 10:33AM Oct 25, 2021Observed: 0.59 ft at 11:04AM Oct 25, 2021Observed: 0.56 ft at 11:17AM Oct 25, 2021Observed: 0.46 ft at 12:03PM Oct 25, 2021Observed: 0.36 ft at 12:40PM Oct 25, 2021Observed: 0.26 ft at 2:11PM Oct 25, 2021Observed: 0.15 ft at 3:58PM Oct 25, 2021Observed: 0.06 ft at 11:17PM Oct 25, 2021Observed: 0.06 ft at 11:17AM Oct 26, 2021ACUC1(plotting HGIRR) Graph Created (10:46PM Oct 26, 2021)ObservedLatest observed value: 0.06 ft at 11:17 AM PDT 26-Oct-2021.
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Tabular Data (UTC)
Tabular Data (PDT)
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RSS Files
Datum: Not Available
Metadata
NOTE: Graphical forecasts are not available for the Atherton Channel upstr miles N of Caltrain. During times of high water, forecast crest information can be found in the text products.
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Flood Categories (in feet)
Not Available

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.
Zoom Level:16
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Gauge LocationGauge Map Marker
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
About This Location Collapse

Latitude: 37.461900° N, Longitude: 122.193800° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft Not Available Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
Elevation
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
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21 Grace Hopper Ave, Stop 5
Monterey, CA 93943-5505
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Page last modified: 2-Nov-2020 7:27 PM
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