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Hydrograph River at a Glance Download
Cowlitz River near Kosmos River Discharge (cfs)Stage (ft)Observed: 1750 cfs at 7:45AM Jul 28, 2021Observed: 1730 cfs at 8:00AM Jul 28, 2021Observed: 1730 cfs at 8:15AM Jul 28, 2021Observed: 1730 cfs at 8:30AM Jul 28, 2021Observed: 1730 cfs at 8:45AM Jul 28, 2021Observed: 1750 cfs at 9:00AM Jul 28, 2021Observed: 1740 cfs at 9:15AM Jul 28, 2021Observed: 1740 cfs at 9:30AM Jul 28, 2021Observed: 2450 cfs at 2:45PM Jul 28, 2021Observed: 2430 cfs at 3:00PM Jul 28, 2021Observed: 2450 cfs at 3:15PM Jul 28, 2021Observed: 2450 cfs at 3:30PM Jul 28, 2021Observed: 1730 cfs at 7:45AM Jul 29, 2021Observed: 1720 cfs at 8:00AM Jul 29, 2021Observed: 1710 cfs at 8:15AM Jul 29, 2021Observed: 1720 cfs at 8:30AM Jul 29, 2021Observed: 1720 cfs at 9:45AM Jul 29, 2021Observed: 1710 cfs at 10:00AM Jul 29, 2021Observed: 1730 cfs at 10:15AM Jul 29, 2021Observed: 1720 cfs at 10:30AM Jul 29, 2021Observed: 1710 cfs at 1:45PM Jul 29, 2021Observed: 1700 cfs at 2:00PM Jul 29, 2021Observed: 1700 cfs at 2:15PM Jul 29, 2021Observed: 1700 cfs at 2:30PM Jul 29, 2021Observed: 1710 cfs at 2:45PM Jul 29, 2021Observed: 1700 cfs at 3:00PM Jul 29, 2021Observed: 1740 cfs at 3:15PM Jul 29, 2021Observed: 1740 cfs at 3:30PM Jul 29, 2021Observed: 2450 cfs at 6:45AM Jul 30, 2021Observed: 2450 cfs at 7:00AM Jul 30, 2021Observed: 2460 cfs at 7:15AM Jul 30, 2021Observed: 2460 cfs at 7:30AM Jul 30, 2021Observed: 2450 cfs at 7:45AM Jul 30, 2021Observed: 2450 cfs at 8:00AM Jul 30, 2021Observed: 2450 cfs at 8:15AM Jul 30, 2021Observed: 2460 cfs at 8:30AM Jul 30, 2021Observed: 2460 cfs at 1:45PM Jul 30, 2021Observed: 2460 cfs at 2:00PM Jul 30, 2021Highest Observation: 2470 cfs at 2:15PM Jul 30, 2021Highest Observation: 2470 cfs at 2:30PM Jul 30, 2021Highest Observation: 2470 cfs at 2:45PM Jul 30, 2021Observed: 2450 cfs at 3:00PM Jul 30, 2021Highest Observation: 2470 cfs at 3:15PM Jul 30, 2021Observed: 2460 cfs at 3:30PM Jul 30, 2021Forecast: 2148 cfs 11:00AM Jul 31, 2021Forecast: 2232.44 cfs 5:00PM Jul 31, 2021Forecast: 2310.66 cfs 11:00PM Jul 31, 2021Forecast: 2358.45 cfs 5:00AM Aug 01, 2021Forecast: 2377.37 cfs 11:00AM Aug 01, 2021Highest Forecast: 2379.84 cfs 5:00PM Aug 01, 2021Forecast: 2369.9 cfs 11:00PM Aug 01, 2021Forecast: 2341.5 cfs 5:00AM Aug 02, 2021Forecast: 2301.39 cfs 11:00AM Aug 02, 2021Forecast: 2265.67 cfs 5:00PM Aug 02, 2021Forecast: 2232.02 cfs 11:00PM Aug 02, 2021Forecast: 2189.05 cfs 5:00AM Aug 03, 2021Forecast: 2152.86 cfs 11:00AM Aug 03, 2021Forecast: 2145.26 cfs 5:00PM Aug 03, 2021Forecast: 2146.46 cfs 11:00PM Aug 03, 2021Forecast: 2126.52 cfs 5:00AM Aug 04, 2021Forecast: 2101.23 cfs 11:00AM Aug 04, 2021Forecast: 2099.14 cfs 5:00PM Aug 04, 2021Forecast: 2103.15 cfs 11:00PM Aug 04, 2021Forecast: 2086.09 cfs 5:00AM Aug 05, 2021Forecast: 2063.36 cfs 11:00AM Aug 05, 2021Forecast: 2059.81 cfs 5:00PM Aug 05, 2021Forecast: 2065.53 cfs 11:00PM Aug 05, 2021Forecast: 2062.26 cfs 5:00AM Aug 06, 2021Forecast: 2049.68 cfs 11:00AM Aug 06, 2021Forecast: 2032.55 cfs 5:00PM Aug 06, 2021Forecast: 2006.89 cfs 11:00PM Aug 06, 2021Forecast: 1965.33 cfs 5:00AM Aug 07, 2021USGS--Water Resources of the United StatesCOKW1(plotting QRIRG) Graph Created (7:35AM Jul 31, 2021)ObservedForecast (issued 2:12PM Jul 30)Latest observed value: 2460 cfs at 3:30 PM PDT 30-Jul-2021.
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Tabular Data (UTC)
Tabular Data (PDT)
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Datum: Not Available
Metadata
NOTE: River forecasts for this location take into account past and future precipitation. The stages/flows that will occur may be different if future rainfall is different than forecast.

NOTE: Gage observations from this river gage have been temporarily discontinued due to a system maintenance and replacement project. River forecasts will continue but will not have the benefit of using the actual river flows.

Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions

NOTE: Forecasts for the Cowlitz River near Kosmos are issued routinely year-round.

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Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 0
Action Stage: 0
Low Stage (in feet): 0

Historic Crests

(P): Preliminary values subject to further review.

Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:16
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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.
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Latitude: 46.466389° N, Longitude: 122.107778° 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  

Current/Historical Observations:

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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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Page last modified: 2-Nov-2020 7:27 PM
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