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Hydrograph River at a Glance Download
Belmont Creek at Harbor Blvd at Old County Road Stage (ft)Observed: 0.2 ft at 5:24AM Oct 22, 2021Observed: 0.37 ft at 5:25AM Oct 22, 2021Observed: 0.54 ft at 5:26AM Oct 22, 2021Observed: 0.7 ft at 5:27AM Oct 22, 2021Observed: 0.8 ft at 5:28AM Oct 22, 2021Observed: 0.92 ft at 5:29AM Oct 22, 2021Observed: 1.07 ft at 5:30AM Oct 22, 2021Observed: 1.17 ft at 5:31AM Oct 22, 2021Observed: 1.37 ft at 5:33AM Oct 22, 2021Observed: 1.48 ft at 5:34AM Oct 22, 2021Observed: 1.59 ft at 5:35AM Oct 22, 2021Observed: 1.74 ft at 5:37AM Oct 22, 2021Observed: 1.9 ft at 5:39AM Oct 22, 2021Observed: 2 ft at 5:41AM Oct 22, 2021Observed: 2.11 ft at 5:43AM Oct 22, 2021Observed: 2.22 ft at 5:46AM Oct 22, 2021Observed: 2.11 ft at 5:57AM Oct 22, 2021Observed: 2 ft at 6:02AM Oct 22, 2021Observed: 1.9 ft at 6:12AM Oct 22, 2021Observed: 1.8 ft at 6:15AM Oct 22, 2021Observed: 1.68 ft at 6:18AM Oct 22, 2021Observed: 1.54 ft at 6:21AM Oct 22, 2021Observed: 1.4 ft at 6:24AM Oct 22, 2021Observed: 1.3 ft at 6:26AM Oct 22, 2021Observed: 1.14 ft at 6:29AM Oct 22, 2021Observed: 1.05 ft at 6:31AM Oct 22, 2021Observed: 0.94 ft at 6:33AM Oct 22, 2021Observed: 0.83 ft at 6:35AM Oct 22, 2021Observed: 0.69 ft at 6:38AM Oct 22, 2021Observed: 0.56 ft at 6:41AM Oct 22, 2021Observed: 0.45 ft at 6:44AM Oct 22, 2021Observed: 0.34 ft at 6:47AM Oct 22, 2021Observed: 0.23 ft at 6:50AM Oct 22, 2021Observed: 0.12 ft at 6:54AM Oct 22, 2021Observed: 0.02 ft at 6:58AM Oct 22, 2021Observed: 0.13 ft at 8:20AM Oct 22, 2021Observed: 0.09 ft at 11:12AM Oct 22, 2021Observed: 0.09 ft at 11:11PM Oct 22, 2021Observed: 0.09 ft at 11:09AM Oct 23, 2021Observed: 0.09 ft at 11:08PM Oct 23, 2021Observed: 0.19 ft at 2:34AM Oct 24, 2021Observed: 0.28 ft at 2:54AM Oct 24, 2021Observed: 0.39 ft at 3:05AM Oct 24, 2021Observed: 0.49 ft at 3:29AM Oct 24, 2021Observed: 0.6 ft at 3:32AM Oct 24, 2021Observed: 0.72 ft at 3:35AM Oct 24, 2021Observed: 0.83 ft at 3:38AM Oct 24, 2021Observed: 0.94 ft at 3:42AM Oct 24, 2021Observed: 1.06 ft at 3:46AM Oct 24, 2021Observed: 1.15 ft at 3:56AM Oct 24, 2021Observed: 1.06 ft at 4:06AM Oct 24, 2021Observed: 0.95 ft at 4:11AM Oct 24, 2021Observed: 0.85 ft at 4:15AM Oct 24, 2021Observed: 0.74 ft at 4:19AM Oct 24, 2021Observed: 0.63 ft at 4:23AM Oct 24, 2021Observed: 0.51 ft at 4:27AM Oct 24, 2021Observed: 0.4 ft at 4:31AM Oct 24, 2021Observed: 0.3 ft at 4:34AM Oct 24, 2021Observed: 0.2 ft at 4:38AM Oct 24, 2021Observed: 0.1 ft at 4:42AM Oct 24, 2021Observed: 0.2 ft at 5:43AM Oct 24, 2021Observed: 0.1 ft at 6:14AM Oct 24, 2021Observed: 0.2 ft at 6:32AM Oct 24, 2021Observed: 0.3 ft at 6:41AM Oct 24, 2021Observed: 0.42 ft at 6:47AM Oct 24, 2021Observed: 0.52 ft at 6:49AM Oct 24, 2021Observed: 0.63 ft at 6:51AM Oct 24, 2021Observed: 0.73 ft at 6:53AM Oct 24, 2021Observed: 0.85 ft at 6:56AM Oct 24, 2021Observed: 0.75 ft at 7:19AM Oct 24, 2021Observed: 0.85 ft at 7:39AM Oct 24, 2021Observed: 0.95 ft at 7:53AM Oct 24, 2021Observed: 1.09 ft at 7:57AM Oct 24, 2021Observed: 1.21 ft at 8:00AM Oct 24, 2021Observed: 1.32 ft at 8:03AM Oct 24, 2021Observed: 1.2 ft at 8:22AM Oct 24, 2021Observed: 1.09 ft at 8:25AM Oct 24, 2021Observed: 0.96 ft at 8:28AM Oct 24, 2021Observed: 0.84 ft at 8:31AM Oct 24, 2021Observed: 0.71 ft at 8:34AM Oct 24, 2021Observed: 0.59 ft at 8:37AM Oct 24, 2021Observed: 0.47 ft at 8:41AM Oct 24, 2021Observed: 0.37 ft at 8:45AM Oct 24, 2021Observed: 0.27 ft at 9:00AM Oct 24, 2021Observed: 0.37 ft at 9:14AM Oct 24, 2021Observed: 0.47 ft at 9:16AM Oct 24, 2021Observed: 0.59 ft at 9:18AM Oct 24, 2021Observed: 0.73 ft at 9:21AM Oct 24, 2021Observed: 0.84 ft at 9:24AM Oct 24, 2021Observed: 0.95 ft at 9:28AM Oct 24, 2021Observed: 1.07 ft at 9:33AM Oct 24, 2021Observed: 1.19 ft at 9:37AM Oct 24, 2021Observed: 1.32 ft at 9:41AM Oct 24, 2021Observed: 1.42 ft at 9:49AM Oct 24, 2021Observed: 1.31 ft at 10:12AM Oct 24, 2021Observed: 1.43 ft at 10:26AM Oct 24, 2021Observed: 1.3 ft at 10:41AM Oct 24, 2021Observed: 1.18 ft at 10:45AM Oct 24, 2021Observed: 1.08 ft at 10:48AM Oct 24, 2021Observed: 0.98 ft at 10:51AM Oct 24, 2021Observed: 0.88 ft at 10:55AM Oct 24, 2021Observed: 0.78 ft at 11:00AM Oct 24, 2021Observed: 0.69 ft at 11:06AM Oct 24, 2021Observed: 0.59 ft at 11:14AM Oct 24, 2021Observed: 0.49 ft at 11:21AM Oct 24, 2021Observed: 0.39 ft at 11:29AM Oct 24, 2021Observed: 0.28 ft at 11:36AM Oct 24, 2021Observed: 0.19 ft at 11:44AM Oct 24, 2021Observed: 0.09 ft at 11:53AM Oct 24, 2021Observed: 0.21 ft at 12:15PM Oct 24, 2021Observed: 0.31 ft at 12:17PM Oct 24, 2021Observed: 0.42 ft at 12:20PM Oct 24, 2021Observed: 0.52 ft at 12:24PM Oct 24, 2021Observed: 0.62 ft at 12:34PM Oct 24, 2021Observed: 0.75 ft at 12:38PM Oct 24, 2021Observed: 0.88 ft at 12:40PM Oct 24, 2021Observed: 1.02 ft at 12:42PM Oct 24, 2021Observed: 1.14 ft at 12:44PM Oct 24, 2021Observed: 1.25 ft at 12:46PM Oct 24, 2021Observed: 1.36 ft at 12:49PM Oct 24, 2021Observed: 1.48 ft at 12:54PM Oct 24, 2021Observed: 1.58 ft at 12:57PM Oct 24, 2021Observed: 1.68 ft at 1:01PM Oct 24, 2021Observed: 1.91 ft at 1:09PM Oct 24, 2021Observed: 2.02 ft at 1:15PM Oct 24, 2021Observed: 2.14 ft at 1:23PM Oct 24, 2021Observed: 2.27 ft at 1:28PM Oct 24, 2021Observed: 2.14 ft at 1:49PM Oct 24, 2021Observed: 2.04 ft at 1:53PM Oct 24, 2021Observed: 1.94 ft at 2:13PM Oct 24, 2021Observed: 1.81 ft at 2:17PM Oct 24, 2021Observed: 1.71 ft at 2:20PM Oct 24, 2021Observed: 1.6 ft at 2:23PM Oct 24, 2021Observed: 1.48 ft at 2:26PM Oct 24, 2021Observed: 1.36 ft at 2:29PM Oct 24, 2021Observed: 1.24 ft at 2:33PM Oct 24, 2021Observed: 1.12 ft at 2:39PM Oct 24, 2021Observed: 1.03 ft at 2:48PM Oct 24, 2021Observed: 1.12 ft at 2:54PM Oct 24, 2021Observed: 1.23 ft at 2:58PM Oct 24, 2021Observed: 1.35 ft at 3:00PM Oct 24, 2021Observed: 1.5 ft at 3:02PM Oct 24, 2021Observed: 1.6 ft at 3:04PM Oct 24, 2021Observed: 1.8 ft at 3:06PM Oct 24, 2021Observed: 1.91 ft at 3:07PM Oct 24, 2021Observed: 2.02 ft at 3:08PM Oct 24, 2021Observed: 2.16 ft at 3:09PM Oct 24, 2021Observed: 2.28 ft at 3:10PM Oct 24, 2021Observed: 2.38 ft at 3:11PM Oct 24, 2021Observed: 2.52 ft at 3:12PM Oct 24, 2021Observed: 2.65 ft at 3:13PM Oct 24, 2021Observed: 4.24 ft at 3:28PM Oct 24, 2021Observed: 4.41 ft at 3:31PM Oct 24, 2021Observed: 4.51 ft at 3:37PM Oct 24, 2021Observed: 4.4 ft at 3:45PM Oct 24, 2021Observed: 4.26 ft at 3:49PM Oct 24, 2021Observed: 4.16 ft at 3:53PM Oct 24, 2021Observed: 4.05 ft at 3:57PM Oct 24, 2021Observed: 3.93 ft at 4:01PM Oct 24, 2021Observed: 3.81 ft at 4:05PM Oct 24, 2021Observed: 3.7 ft at 4:18PM Oct 24, 2021Observed: 3.59 ft at 4:24PM Oct 24, 2021Observed: 3.47 ft at 4:30PM Oct 24, 2021Observed: 3.37 ft at 4:33PM Oct 24, 2021Observed: 3.25 ft at 4:37PM Oct 24, 2021Observed: 3.13 ft at 4:41PM Oct 24, 2021Observed: 3.01 ft at 4:46PM Oct 24, 2021Observed: 2.91 ft at 4:53PM Oct 24, 2021Observed: 3.04 ft at 5:08PM Oct 24, 2021Observed: 3.15 ft at 5:10PM Oct 24, 2021Observed: 3.3 ft at 5:12PM Oct 24, 2021Observed: 3.43 ft at 5:15PM Oct 24, 2021Highest Observation: 4.59 ft at 6:11PM Oct 24, 2021Observed: 4.49 ft at 6:15PM Oct 24, 2021Observed: 4.38 ft at 6:21PM Oct 24, 2021Observed: 4.29 ft at 6:28PM Oct 24, 2021Observed: 4.19 ft at 6:52PM Oct 24, 2021Observed: 4.09 ft at 7:05PM Oct 24, 2021Observed: 3.98 ft at 7:18PM Oct 24, 2021Observed: 3.88 ft at 7:28PM Oct 24, 2021Observed: 3.67 ft at 7:59PM Oct 24, 2021Observed: 3.57 ft at 8:10PM Oct 24, 2021Observed: 3.68 ft at 8:38PM Oct 24, 2021Observed: 3.78 ft at 8:47PM Oct 24, 2021Observed: 3.88 ft at 8:52PM Oct 24, 2021Observed: 4 ft at 8:58PM Oct 24, 2021Observed: 3.89 ft at 9:13PM Oct 24, 2021Observed: 3.77 ft at 9:19PM Oct 24, 2021Observed: 3.67 ft at 9:25PM Oct 24, 2021Observed: 3.56 ft at 9:29PM Oct 24, 2021Observed: 3.45 ft at 10:23PM Oct 24, 2021Observed: 3.34 ft at 10:41PM Oct 24, 2021Observed: 3.23 ft at 10:51PM Oct 24, 2021Observed: 3.13 ft at 10:58PM Oct 24, 2021Observed: 3.05 ft at 11:05PM Oct 24, 2021Observed: 3.16 ft at 12:11AM Oct 25, 2021Observed: 3.26 ft at 12:20AM Oct 25, 2021Observed: 3.15 ft at 12:43AM Oct 25, 2021Observed: 3.05 ft at 12:47AM Oct 25, 2021Observed: 2.95 ft at 12:50AM Oct 25, 2021Observed: 2.82 ft at 12:53AM Oct 25, 2021Observed: 2.7 ft at 12:56AM Oct 25, 2021Observed: 2.57 ft at 12:59AM Oct 25, 2021Observed: 2.46 ft at 1:02AM Oct 25, 2021Observed: 2.36 ft at 1:05AM Oct 25, 2021Observed: 2.25 ft at 1:08AM Oct 25, 2021Observed: 2.15 ft at 1:11AM Oct 25, 2021Observed: 2.04 ft at 1:16AM Oct 25, 2021Observed: 1.95 ft at 1:22AM Oct 25, 2021Observed: 1.84 ft at 1:32AM Oct 25, 2021Observed: 1.72 ft at 2:05AM Oct 25, 2021Observed: 1.61 ft at 2:13AM Oct 25, 2021Observed: 1.51 ft at 2:23AM Oct 25, 2021Observed: 1.4 ft at 2:47AM Oct 25, 2021Observed: 1.29 ft at 2:54AM Oct 25, 2021Observed: 1.19 ft at 3:02AM Oct 25, 2021Observed: 1.08 ft at 3:13AM Oct 25, 2021Observed: 0.98 ft at 4:07AM Oct 25, 2021Observed: 0.88 ft at 4:21AM Oct 25, 2021Observed: 0.98 ft at 4:50AM Oct 25, 2021Observed: 0.88 ft at 5:04AM Oct 25, 2021Observed: 0.77 ft at 5:10AM Oct 25, 2021Observed: 0.67 ft at 5:15AM Oct 25, 2021Observed: 0.56 ft at 5:22AM Oct 25, 2021Observed: 0.67 ft at 5:56AM Oct 25, 2021Observed: 0.81 ft at 5:58AM Oct 25, 2021Observed: 0.94 ft at 6:00AM Oct 25, 2021Observed: 1.04 ft at 6:03AM Oct 25, 2021Observed: 0.94 ft at 6:12AM Oct 25, 2021Observed: 0.84 ft at 6:16AM Oct 25, 2021Observed: 0.73 ft at 6:20AM Oct 25, 2021Observed: 0.61 ft at 6:25AM Oct 25, 2021Observed: 0.5 ft at 6:31AM Oct 25, 2021Observed: 0.4 ft at 6:41AM Oct 25, 2021Observed: 0.3 ft at 6:52AM Oct 25, 2021Observed: 0.2 ft at 7:07AM Oct 25, 2021Observed: 0.09 ft at 11:03AM Oct 25, 2021Observed: 0.09 ft at 11:02PM Oct 25, 2021Observed: 0.09 ft at 11:00AM Oct 26, 2021Observed: 0.09 ft at 10:59PM Oct 26, 2021OCRC1(plotting HGIRR) Graph Created (4:15AM Oct 27, 2021)ObservedLatest observed value: 0.09 ft at 10:59 PM PDT 26-Oct-2021. Flood Stage is 4.1 ft
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Graphical forecasts are not available for the Belmont Creek at Harbor Blvd at Old County Road. During times of high water, forecast crest information can be found in the text products.
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Flood Categories (in feet)
Major Flood Stage: 5.2
Moderate Flood Stage: 4.5
Flood Stage: 4.1
Action Stage: 0
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.

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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
5.2 Major Flooding. CalTrain culvert upstream of Old County Road at full capacity, likely backwatered upstream. Most roadways and businesses in the vicinity of the gauge flooded and impassable. Lower elevation industry and businesses along Old County Road flooded, with the Harbor Blvd/Old County Road intersection under several feet of water. Belmont Creek above channel capacity downstream of Old County Road.
4.5 Moderate Flooding. Storm drain outfall into Belmont Creek on either side of Old County Road completely backwatered, causing street flooding on Old County Road south of Harbor Boulevard. Harbor Boulevard underpass beneath CalTrain rail line also likely flooded. Culvert beneath Old County Road submerged and backwatered. NWS will issue Flash Flood Warning, if not yet already issued.
4.1 Minor Flooding. Water level is approximately 2 feet below lowest storm drain inlet on Old County Road. Storm drains on both side of Old County Road that outfall into Belmont Creek are already backwatered by 2 to 3 feet. NWS will issue an Urban/Small Stream Flood Advisory, if not yet already issued.
About This Location Collapse

Latitude: 37.517222° N, Longitude: 122.270833° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 4.1 ft 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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Monterey, CA 93943-5505
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Page last modified: 2-Nov-2020 7:27 PM
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