Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Bookmark and Share Navigation Bar End Cap

  
 

Web Portal Changes:

  • Attention: Technicians are currently working to bring Precipitation datasets back to full capability after the April 16 outage.
  • NWPS - water.noaa.gov - Officially operational on Wednesday, March 27th, 8-9am EDT
  • AHPS - water.weather.gov- Scheduled operations ends on Tuesday, May 28th, 2024 - the pages will automatically redirect to water.noaa.gov until May 28, 2025.
  • Other Important URL changes - Service Change Notice 24-29 

Please visit https://www.weather.gov/owp/operations for more information.



Hydrograph River at a Glance Download
Cowlitz River near Kosmos River Discharge (cfs)Stage (ft)Observed: 3250 cfs at 1:45AM Apr 21, 2024Observed: 3220 cfs at 2:00AM Apr 21, 2024Observed: 3270 cfs at 2:15AM Apr 21, 2024Observed: 3290 cfs at 2:30AM Apr 21, 2024Observed: 3270 cfs at 2:45AM Apr 21, 2024Observed: 3260 cfs at 3:00AM Apr 21, 2024Observed: 3190 cfs at 3:15AM Apr 21, 2024Observed: 3190 cfs at 3:30AM Apr 21, 2024Observed: 3190 cfs at 3:45AM Apr 21, 2024Observed: 3210 cfs at 4:00AM Apr 21, 2024Observed: 3310 cfs at 4:15AM Apr 21, 2024Observed: 3320 cfs at 4:30AM Apr 21, 2024Observed: 3320 cfs at 4:45AM Apr 21, 2024Observed: 3320 cfs at 5:00AM Apr 21, 2024Observed: 3160 cfs at 5:15AM Apr 21, 2024Observed: 3210 cfs at 5:30AM Apr 21, 2024Observed: 3230 cfs at 5:45AM Apr 21, 2024Observed: 3170 cfs at 6:00AM Apr 21, 2024Observed: 3250 cfs at 6:15AM Apr 21, 2024Observed: 3270 cfs at 6:30AM Apr 21, 2024Observed: 3250 cfs at 6:45AM Apr 21, 2024Observed: 3240 cfs at 7:00AM Apr 21, 2024Observed: 3270 cfs at 7:15AM Apr 21, 2024Observed: 3230 cfs at 7:30AM Apr 21, 2024Observed: 3250 cfs at 7:45AM Apr 21, 2024Observed: 3250 cfs at 8:00AM Apr 21, 2024Observed: 3230 cfs at 8:15AM Apr 21, 2024Observed: 3250 cfs at 8:30AM Apr 21, 2024Observed: 3220 cfs at 8:45AM Apr 21, 2024Observed: 3250 cfs at 9:00AM Apr 21, 2024Observed: 3320 cfs at 9:15AM Apr 21, 2024Observed: 3300 cfs at 9:30AM Apr 21, 2024Observed: 3280 cfs at 9:45AM Apr 21, 2024Observed: 3280 cfs at 10:00AM Apr 21, 2024Observed: 3210 cfs at 10:15AM Apr 21, 2024Observed: 3190 cfs at 10:30AM Apr 21, 2024Observed: 3180 cfs at 10:45AM Apr 21, 2024Observed: 3190 cfs at 11:00AM Apr 21, 2024Observed: 3270 cfs at 11:15AM Apr 21, 2024Observed: 3270 cfs at 11:30AM Apr 21, 2024Observed: 3260 cfs at 11:45AM Apr 21, 2024Observed: 3260 cfs at 12:00PM Apr 21, 2024Observed: 3260 cfs at 12:15PM Apr 21, 2024Observed: 3230 cfs at 12:30PM Apr 21, 2024Observed: 3230 cfs at 12:45PM Apr 21, 2024Observed: 3220 cfs at 1:00PM Apr 21, 2024Observed: 3380 cfs at 1:15PM Apr 21, 2024Observed: 3360 cfs at 1:30PM Apr 21, 2024Observed: 3350 cfs at 1:45PM Apr 21, 2024Observed: 3350 cfs at 2:00PM Apr 21, 2024Observed: 3110 cfs at 2:15PM Apr 21, 2024Observed: 3110 cfs at 2:30PM Apr 21, 2024Observed: 3120 cfs at 2:45PM Apr 21, 2024Observed: 3130 cfs at 3:00PM Apr 21, 2024Observed: 3330 cfs at 3:15PM Apr 21, 2024Observed: 3370 cfs at 3:30PM Apr 21, 2024Observed: 3360 cfs at 3:45PM Apr 21, 2024Observed: 3360 cfs at 4:00PM Apr 21, 2024Observed: 3230 cfs at 4:15PM Apr 21, 2024Observed: 3220 cfs at 4:30PM Apr 21, 2024Observed: 3240 cfs at 4:45PM Apr 21, 2024Observed: 3230 cfs at 5:00PM Apr 21, 2024Observed: 3220 cfs at 5:15PM Apr 21, 2024Observed: 3210 cfs at 5:30PM Apr 21, 2024Observed: 3220 cfs at 5:45PM Apr 21, 2024Observed: 3210 cfs at 6:00PM Apr 21, 2024Observed: 3270 cfs at 6:15PM Apr 21, 2024Observed: 3320 cfs at 6:30PM Apr 21, 2024Observed: 3290 cfs at 6:45PM Apr 21, 2024Observed: 3280 cfs at 7:00PM Apr 21, 2024Observed: 3180 cfs at 7:15PM Apr 21, 2024Observed: 3220 cfs at 7:30PM Apr 21, 2024Observed: 3200 cfs at 7:45PM Apr 21, 2024Observed: 3190 cfs at 8:00PM Apr 21, 2024Observed: 3280 cfs at 8:15PM Apr 21, 2024Observed: 3260 cfs at 8:30PM Apr 21, 2024Observed: 3280 cfs at 8:45PM Apr 21, 2024Observed: 3250 cfs at 9:00PM Apr 21, 2024Observed: 3270 cfs at 9:15PM Apr 21, 2024Observed: 3250 cfs at 9:30PM Apr 21, 2024Observed: 3270 cfs at 9:45PM Apr 21, 2024Observed: 3260 cfs at 10:00PM Apr 21, 2024Observed: 3040 cfs at 10:15PM Apr 21, 2024Observed: 3030 cfs at 10:30PM Apr 21, 2024Observed: 3030 cfs at 10:45PM Apr 21, 2024Observed: 3060 cfs at 11:00PM Apr 21, 2024Highest Observation: 3390 cfs at 11:15PM Apr 21, 2024Observed: 3370 cfs at 11:30PM Apr 21, 2024Observed: 3360 cfs at 11:45PM Apr 21, 2024Observed: 3360 cfs at 12:00AM Apr 22, 2024Observed: 3050 cfs at 12:15AM Apr 22, 2024Observed: 3070 cfs at 12:30AM Apr 22, 2024Observed: 3070 cfs at 12:45AM Apr 22, 2024Observed: 3120 cfs at 1:00AM Apr 22, 2024Observed: 3260 cfs at 1:15AM Apr 22, 2024Observed: 3260 cfs at 1:30AM Apr 22, 2024Observed: 3270 cfs at 1:45AM Apr 22, 2024Observed: 3250 cfs at 2:00AM Apr 22, 2024Observed: 3200 cfs at 2:15AM Apr 22, 2024Observed: 3200 cfs at 2:30AM Apr 22, 2024Observed: 3200 cfs at 2:45AM Apr 22, 2024Observed: 3180 cfs at 3:00AM Apr 22, 2024Observed: 3160 cfs at 3:15AM Apr 22, 2024Observed: 3140 cfs at 3:30AM Apr 22, 2024Observed: 3150 cfs at 3:45AM Apr 22, 2024Observed: 3160 cfs at 4:00AM Apr 22, 2024Observed: 3250 cfs at 4:15AM Apr 22, 2024Observed: 3200 cfs at 4:30AM Apr 22, 2024Observed: 3220 cfs at 4:45AM Apr 22, 2024Observed: 3190 cfs at 5:00AM Apr 22, 2024Observed: 3070 cfs at 5:15AM Apr 22, 2024Observed: 3070 cfs at 5:30AM Apr 22, 2024Observed: 3060 cfs at 5:45AM Apr 22, 2024Observed: 3050 cfs at 6:00AM Apr 22, 2024Observed: 3320 cfs at 6:15AM Apr 22, 2024Observed: 3270 cfs at 6:30AM Apr 22, 2024Observed: 3280 cfs at 6:45AM Apr 22, 2024Observed: 3270 cfs at 7:00AM Apr 22, 2024Observed: 2910 cfs at 7:15AM Apr 22, 2024Observed: 2940 cfs at 7:30AM Apr 22, 2024Observed: 2920 cfs at 7:45AM Apr 22, 2024Observed: 2970 cfs at 8:00AM Apr 22, 2024Observed: 3010 cfs at 8:15AM Apr 22, 2024Observed: 3190 cfs at 8:30AM Apr 22, 2024Observed: 3130 cfs at 8:45AM Apr 22, 2024Observed: 3150 cfs at 9:00AM Apr 22, 2024Observed: 3130 cfs at 9:15AM Apr 22, 2024Observed: 3150 cfs at 9:30AM Apr 22, 2024Observed: 3140 cfs at 9:45AM Apr 22, 2024Observed: 3230 cfs at 10:00AM Apr 22, 2024Observed: 3230 cfs at 10:15AM Apr 22, 2024Observed: 3220 cfs at 10:30AM Apr 22, 2024Observed: 3230 cfs at 10:45AM Apr 22, 2024Observed: 3230 cfs at 11:00AM Apr 22, 2024Observed: 3220 cfs at 11:15AM Apr 22, 2024Observed: 3210 cfs at 11:30AM Apr 22, 2024Observed: 3210 cfs at 11:45AM Apr 22, 2024Observed: 3200 cfs at 12:00PM Apr 22, 2024Observed: 3010 cfs at 12:15PM Apr 22, 2024Observed: 3010 cfs at 12:30PM Apr 22, 2024Observed: 3030 cfs at 12:45PM Apr 22, 2024Observed: 3050 cfs at 1:00PM Apr 22, 2024Observed: 3080 cfs at 1:15PM Apr 22, 2024Observed: 3120 cfs at 1:30PM Apr 22, 2024Observed: 3070 cfs at 1:45PM Apr 22, 2024Observed: 3110 cfs at 2:00PM Apr 22, 2024Observed: 3090 cfs at 2:15PM Apr 22, 2024Observed: 3110 cfs at 2:30PM Apr 22, 2024Observed: 3100 cfs at 2:45PM Apr 22, 2024Observed: 3130 cfs at 3:00PM Apr 22, 2024Observed: 3100 cfs at 3:15PM Apr 22, 2024Observed: 3050 cfs at 3:30PM Apr 22, 2024Observed: 3080 cfs at 3:45PM Apr 22, 2024Observed: 3090 cfs at 4:00PM Apr 22, 2024Observed: 3060 cfs at 4:15PM Apr 22, 2024Observed: 3050 cfs at 4:30PM Apr 22, 2024Observed: 3090 cfs at 4:45PM Apr 22, 2024Observed: 3090 cfs at 5:00PM Apr 22, 2024Observed: 3140 cfs at 5:15PM Apr 22, 2024Observed: 3190 cfs at 5:30PM Apr 22, 2024Observed: 3170 cfs at 5:45PM Apr 22, 2024Observed: 3170 cfs at 6:00PM Apr 22, 2024Observed: 2980 cfs at 6:15PM Apr 22, 2024Observed: 2960 cfs at 6:30PM Apr 22, 2024Observed: 2940 cfs at 6:45PM Apr 22, 2024Observed: 2970 cfs at 7:00PM Apr 22, 2024Observed: 3130 cfs at 7:15PM Apr 22, 2024Observed: 3140 cfs at 7:30PM Apr 22, 2024Observed: 3130 cfs at 7:45PM Apr 22, 2024Observed: 3130 cfs at 8:00PM Apr 22, 2024Observed: 3130 cfs at 8:15PM Apr 22, 2024Observed: 3100 cfs at 8:30PM Apr 22, 2024Observed: 3110 cfs at 8:45PM Apr 22, 2024Observed: 3100 cfs at 9:00PM Apr 22, 2024Observed: 3090 cfs at 9:15PM Apr 22, 2024Observed: 3080 cfs at 9:30PM Apr 22, 2024Observed: 3100 cfs at 9:45PM Apr 22, 2024Observed: 3070 cfs at 10:00PM Apr 22, 2024Observed: 3010 cfs at 10:15PM Apr 22, 2024Observed: 3050 cfs at 10:30PM Apr 22, 2024Observed: 3070 cfs at 10:45PM Apr 22, 2024Observed: 3040 cfs at 11:00PM Apr 22, 2024Observed: 3010 cfs at 11:15PM Apr 22, 2024Observed: 3030 cfs at 11:30PM Apr 22, 2024Observed: 3020 cfs at 11:45PM Apr 22, 2024Observed: 3060 cfs at 12:00AM Apr 23, 2024Observed: 3090 cfs at 12:15AM Apr 23, 2024Observed: 3080 cfs at 12:30AM Apr 23, 2024Observed: 3100 cfs at 12:45AM Apr 23, 2024Observed: 3110 cfs at 1:00AM Apr 23, 2024Observed: 2930 cfs at 1:15AM Apr 23, 2024Observed: 2970 cfs at 1:30AM Apr 23, 2024Observed: 3000 cfs at 1:45AM Apr 23, 2024Observed: 2960 cfs at 2:00AM Apr 23, 2024Observed: 3160 cfs at 2:15AM Apr 23, 2024Observed: 3140 cfs at 2:30AM Apr 23, 2024Observed: 3160 cfs at 2:45AM Apr 23, 2024Observed: 3130 cfs at 3:00AM Apr 23, 2024Observed: 2960 cfs at 3:15AM Apr 23, 2024Observed: 2960 cfs at 3:30AM Apr 23, 2024Observed: 2960 cfs at 3:45AM Apr 23, 2024Observed: 2970 cfs at 4:00AM Apr 23, 2024Observed: 3010 cfs at 4:15AM Apr 23, 2024Observed: 3020 cfs at 4:30AM Apr 23, 2024Observed: 3040 cfs at 4:45AM Apr 23, 2024Observed: 3060 cfs at 5:00AM Apr 23, 2024Observed: 2970 cfs at 5:15AM Apr 23, 2024Observed: 2980 cfs at 5:30AM Apr 23, 2024Observed: 2970 cfs at 5:45AM Apr 23, 2024Observed: 2970 cfs at 6:00AM Apr 23, 2024Observed: 3080 cfs at 9:45AM Apr 23, 2024Observed: 2650 cfs at 12:45PM Apr 23, 2024Observed: 2640 cfs at 1:00PM Apr 23, 2024Observed: 2590 cfs at 1:15PM Apr 23, 2024Observed: 2600 cfs at 1:30PM Apr 23, 2024Observed: 2510 cfs at 1:45PM Apr 23, 2024Observed: 2630 cfs at 2:00PM Apr 23, 2024Observed: 3030 cfs at 2:15PM Apr 23, 2024Observed: 3010 cfs at 2:30PM Apr 23, 2024Observed: 3020 cfs at 2:45PM Apr 23, 2024Observed: 3010 cfs at 3:00PM Apr 23, 2024Observed: 2970 cfs at 3:15PM Apr 23, 2024Observed: 2990 cfs at 3:30PM Apr 23, 2024Observed: 2970 cfs at 3:45PM Apr 23, 2024Observed: 2960 cfs at 4:00PM Apr 23, 2024Observed: 3000 cfs at 4:15PM Apr 23, 2024Observed: 2980 cfs at 4:30PM Apr 23, 2024Observed: 2980 cfs at 4:45PM Apr 23, 2024Observed: 2980 cfs at 5:00PM Apr 23, 2024Observed: 3010 cfs at 5:15PM Apr 23, 2024Observed: 3030 cfs at 5:30PM Apr 23, 2024Observed: 3050 cfs at 5:45PM Apr 23, 2024Observed: 3010 cfs at 6:00PM Apr 23, 2024Observed: 3030 cfs at 6:15PM Apr 23, 2024Observed: 3030 cfs at 6:30PM Apr 23, 2024Observed: 3010 cfs at 6:45PM Apr 23, 2024Observed: 3030 cfs at 7:00PM Apr 23, 2024Observed: 3000 cfs at 7:15PM Apr 23, 2024Observed: 2970 cfs at 7:30PM Apr 23, 2024Observed: 2950 cfs at 7:45PM Apr 23, 2024Observed: 2990 cfs at 8:00PM Apr 23, 2024Observed: 3100 cfs at 8:15PM Apr 23, 2024Observed: 3080 cfs at 8:30PM Apr 23, 2024Observed: 3090 cfs at 8:45PM Apr 23, 2024Observed: 3060 cfs at 9:00PM Apr 23, 2024Observed: 2870 cfs at 9:15PM Apr 23, 2024Observed: 2900 cfs at 9:30PM Apr 23, 2024Observed: 2930 cfs at 9:45PM Apr 23, 2024Observed: 2930 cfs at 10:00PM Apr 23, 2024Observed: 3160 cfs at 10:15PM Apr 23, 2024Observed: 3140 cfs at 10:30PM Apr 23, 2024Observed: 3150 cfs at 10:45PM Apr 23, 2024Observed: 3150 cfs at 11:00PM Apr 23, 2024Observed: 2950 cfs at 11:15PM Apr 23, 2024Observed: 2960 cfs at 11:30PM Apr 23, 2024Observed: 2920 cfs at 11:45PM Apr 23, 2024Observed: 2940 cfs at 12:00AM Apr 24, 2024Observed: 3010 cfs at 12:15AM Apr 24, 2024Observed: 3000 cfs at 12:30AM Apr 24, 2024Forecast: 3197.02 cfs 5:00AM Apr 24, 2024Forecast: 3288.09 cfs 11:00AM Apr 24, 2024Forecast: 3434.56 cfs 5:00PM Apr 24, 2024Forecast: 3606.81 cfs 11:00PM Apr 24, 2024Forecast: 3740.89 cfs 5:00AM Apr 25, 2024Forecast: 3842.12 cfs 11:00AM Apr 25, 2024Forecast: 3937.45 cfs 5:00PM Apr 25, 2024Forecast: 4063.06 cfs 11:00PM Apr 25, 2024Forecast: 4243.62 cfs 5:00AM Apr 26, 2024Forecast: 4502.98 cfs 11:00AM Apr 26, 2024Forecast: 4812.53 cfs 5:00PM Apr 26, 2024Forecast: 5134.22 cfs 11:00PM Apr 26, 2024Forecast: 5389.95 cfs 5:00AM Apr 27, 2024Forecast: 5570.29 cfs 11:00AM Apr 27, 2024Forecast: 5665.68 cfs 5:00PM Apr 27, 2024Highest Forecast: 5685.56 cfs 11:00PM Apr 27, 2024Forecast: 5635.17 cfs 5:00AM Apr 28, 2024Forecast: 5560.34 cfs 11:00AM Apr 28, 2024Forecast: 5509.7 cfs 5:00PM Apr 28, 2024Forecast: 5497.93 cfs 11:00PM Apr 28, 2024Forecast: 5489.28 cfs 5:00AM Apr 29, 2024Forecast: 5515.84 cfs 11:00AM Apr 29, 2024Forecast: 5559.82 cfs 5:00PM Apr 29, 2024Forecast: 5591.15 cfs 11:00PM Apr 29, 2024Forecast: 5564.02 cfs 5:00AM Apr 30, 2024Forecast: 5470.2 cfs 11:00AM Apr 30, 2024Forecast: 5328.61 cfs 5:00PM Apr 30, 2024Forecast: 5184.88 cfs 11:00PM Apr 30, 2024USGS--Water Resources of the United StatesCOKW1(plotting QRIRG) Graph Created (1:35AM Apr 24, 2024)ObservedForecast (issued 2:33PM Apr 23)Latest observed value: 3000 cfs at 12:30 AM PDT 24-Apr-2024.
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
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.

Return to Area Map
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
KML Image
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: 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:

Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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.
NWS Information
National Weather Service
Seattle Weather Forecast Office
7600 Sandpoint Way NE
Seattle, WA 98115-6349
(206) 526-6087
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:27 PM
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities