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

  
 
Hydrograph River at a Glance Download
Marys River near Philomath Stage (ft)Flow (cfs)Observed: 7.79 ft at 1:00AM Dec 16, 2014Observed: 7.78 ft at 1:30AM Dec 16, 2014Observed: 7.76 ft at 2:00AM Dec 16, 2014Observed: 7.74 ft at 2:30AM Dec 16, 2014Observed: 7.73 ft at 3:00AM Dec 16, 2014Observed: 7.73 ft at 3:30AM Dec 16, 2014Observed: 7.71 ft at 4:00AM Dec 16, 2014Observed: 7.7 ft at 4:30AM Dec 16, 2014Observed: 7.68 ft at 5:00AM Dec 16, 2014Observed: 7.67 ft at 5:30AM Dec 16, 2014Observed: 7.66 ft at 6:00AM Dec 16, 2014Observed: 7.64 ft at 6:30AM Dec 16, 2014Observed: 7.62 ft at 7:00AM Dec 16, 2014Observed: 7.61 ft at 7:30AM Dec 16, 2014Observed: 7.6 ft at 8:00AM Dec 16, 2014Observed: 7.56 ft at 8:30AM Dec 16, 2014Observed: 7.57 ft at 9:00AM Dec 16, 2014Observed: 7.54 ft at 9:30AM Dec 16, 2014Observed: 7.53 ft at 10:00AM Dec 16, 2014Observed: 7.5 ft at 10:30AM Dec 16, 2014Observed: 7.5 ft at 11:00AM Dec 16, 2014Observed: 7.46 ft at 11:30AM Dec 16, 2014Observed: 7.47 ft at 12:00PM Dec 16, 2014Observed: 7.46 ft at 12:30PM Dec 16, 2014Observed: 7.45 ft at 1:00PM Dec 16, 2014Observed: 7.42 ft at 1:30PM Dec 16, 2014Observed: 7.41 ft at 2:00PM Dec 16, 2014Observed: 7.4 ft at 2:30PM Dec 16, 2014Observed: 7.39 ft at 3:00PM Dec 16, 2014Observed: 7.34 ft at 3:30PM Dec 16, 2014Observed: 7.34 ft at 4:00PM Dec 16, 2014Observed: 7.31 ft at 4:30PM Dec 16, 2014Observed: 7.32 ft at 5:00PM Dec 16, 2014Observed: 7.29 ft at 5:30PM Dec 16, 2014Observed: 7.27 ft at 6:00PM Dec 16, 2014Observed: 7.26 ft at 6:30PM Dec 16, 2014Observed: 7.24 ft at 7:00PM Dec 16, 2014Observed: 7.23 ft at 7:30PM Dec 16, 2014Observed: 7.2 ft at 8:00PM Dec 16, 2014Observed: 7.19 ft at 8:30PM Dec 16, 2014Observed: 7.2 ft at 9:00PM Dec 16, 2014Observed: 7.18 ft at 9:30PM Dec 16, 2014Observed: 7.17 ft at 10:00PM Dec 16, 2014Observed: 7.15 ft at 10:30PM Dec 16, 2014Observed: 7.14 ft at 11:00PM Dec 16, 2014Observed: 7.13 ft at 11:30PM Dec 16, 2014Observed: 7.12 ft at 12:00AM Dec 17, 2014Observed: 7.12 ft at 12:30AM Dec 17, 2014Observed: 7.1 ft at 1:00AM Dec 17, 2014Observed: 7.09 ft at 1:30AM Dec 17, 2014Observed: 7.08 ft at 2:00AM Dec 17, 2014Observed: 7.07 ft at 2:30AM Dec 17, 2014Observed: 7.06 ft at 3:00AM Dec 17, 2014Observed: 7.05 ft at 3:30AM Dec 17, 2014Observed: 7.02 ft at 4:00AM Dec 17, 2014Observed: 7.02 ft at 4:30AM Dec 17, 2014Observed: 7.02 ft at 5:00AM Dec 17, 2014Observed: 7 ft at 5:30AM Dec 17, 2014Observed: 6.99 ft at 6:00AM Dec 17, 2014Observed: 6.98 ft at 6:30AM Dec 17, 2014Observed: 6.98 ft at 7:00AM Dec 17, 2014Observed: 6.96 ft at 7:30AM Dec 17, 2014Observed: 6.95 ft at 8:00AM Dec 17, 2014Observed: 6.92 ft at 8:30AM Dec 17, 2014Observed: 6.91 ft at 9:00AM Dec 17, 2014Observed: 6.89 ft at 9:30AM Dec 17, 2014Observed: 6.9 ft at 10:00AM Dec 17, 2014Observed: 6.88 ft at 10:30AM Dec 17, 2014Observed: 6.87 ft at 11:00AM Dec 17, 2014Observed: 6.86 ft at 11:30AM Dec 17, 2014Observed: 6.85 ft at 12:00PM Dec 17, 2014Observed: 6.85 ft at 12:30PM Dec 17, 2014Observed: 6.85 ft at 1:00PM Dec 17, 2014Observed: 6.83 ft at 1:30PM Dec 17, 2014Observed: 6.82 ft at 2:00PM Dec 17, 2014Observed: 6.81 ft at 2:30PM Dec 17, 2014Observed: 6.8 ft at 3:00PM Dec 17, 2014Observed: 6.77 ft at 3:30PM Dec 17, 2014Observed: 6.78 ft at 4:00PM Dec 17, 2014Observed: 6.77 ft at 4:30PM Dec 17, 2014Observed: 6.77 ft at 5:00PM Dec 17, 2014Observed: 6.78 ft at 5:30PM Dec 17, 2014Observed: 6.78 ft at 6:00PM Dec 17, 2014Observed: 6.79 ft at 6:30PM Dec 17, 2014Observed: 6.79 ft at 7:00PM Dec 17, 2014Observed: 6.79 ft at 7:30PM Dec 17, 2014Observed: 6.81 ft at 8:00PM Dec 17, 2014Observed: 6.81 ft at 8:30PM Dec 17, 2014Observed: 6.8 ft at 9:00PM Dec 17, 2014Observed: 6.82 ft at 9:30PM Dec 17, 2014Observed: 6.82 ft at 10:00PM Dec 17, 2014Observed: 6.83 ft at 10:30PM Dec 17, 2014Observed: 6.84 ft at 11:00PM Dec 17, 2014Observed: 6.84 ft at 11:30PM Dec 17, 2014Observed: 6.85 ft at 12:00AM Dec 18, 2014Observed: 6.87 ft at 12:30AM Dec 18, 2014Observed: 6.87 ft at 1:00AM Dec 18, 2014Observed: 6.85 ft at 1:30AM Dec 18, 2014Observed: 6.86 ft at 2:00AM Dec 18, 2014Observed: 6.83 ft at 2:30AM Dec 18, 2014Observed: 6.84 ft at 3:00AM Dec 18, 2014Observed: 6.84 ft at 3:30AM Dec 18, 2014Observed: 6.82 ft at 4:00AM Dec 18, 2014Observed: 6.81 ft at 4:30AM Dec 18, 2014Observed: 6.8 ft at 5:00AM Dec 18, 2014Observed: 6.77 ft at 5:30AM Dec 18, 2014Observed: 6.79 ft at 6:00AM Dec 18, 2014Observed: 6.79 ft at 6:30AM Dec 18, 2014Observed: 6.77 ft at 7:00AM Dec 18, 2014Observed: 6.77 ft at 7:30AM Dec 18, 2014Observed: 6.76 ft at 8:00AM Dec 18, 2014Observed: 6.74 ft at 8:30AM Dec 18, 2014Observed: 6.74 ft at 9:00AM Dec 18, 2014Observed: 6.71 ft at 9:30AM Dec 18, 2014Observed: 6.72 ft at 10:00AM Dec 18, 2014Observed: 6.7 ft at 10:30AM Dec 18, 2014Observed: 6.69 ft at 11:00AM Dec 18, 2014Observed: 6.67 ft at 11:30AM Dec 18, 2014Observed: 6.66 ft at 12:00PM Dec 18, 2014Observed: 6.65 ft at 12:30PM Dec 18, 2014Observed: 6.65 ft at 1:00PM Dec 18, 2014Observed: 6.62 ft at 1:30PM Dec 18, 2014Observed: 6.64 ft at 2:00PM Dec 18, 2014Observed: 6.62 ft at 2:30PM Dec 18, 2014Observed: 6.62 ft at 3:00PM Dec 18, 2014Observed: 6.61 ft at 3:30PM Dec 18, 2014Observed: 6.59 ft at 4:00PM Dec 18, 2014Observed: 6.59 ft at 4:30PM Dec 18, 2014Observed: 6.58 ft at 5:00PM Dec 18, 2014Observed: 6.58 ft at 5:30PM Dec 18, 2014Observed: 6.57 ft at 6:00PM Dec 18, 2014Observed: 6.54 ft at 6:30PM Dec 18, 2014Observed: 6.55 ft at 7:00PM Dec 18, 2014Observed: 6.53 ft at 7:30PM Dec 18, 2014Observed: 6.53 ft at 8:00PM Dec 18, 2014Observed: 6.53 ft at 8:30PM Dec 18, 2014Observed: 6.52 ft at 9:00PM Dec 18, 2014Observed: 6.54 ft at 9:30PM Dec 18, 2014Observed: 6.55 ft at 10:00PM Dec 18, 2014Observed: 6.56 ft at 10:30PM Dec 18, 2014Observed: 6.57 ft at 11:00PM Dec 18, 2014Observed: 6.62 ft at 11:30PM Dec 18, 2014Observed: 6.64 ft at 12:00AM Dec 19, 2014Observed: 6.7 ft at 12:30AM Dec 19, 2014Observed: 6.73 ft at 1:00AM Dec 19, 2014Observed: 6.79 ft at 1:30AM Dec 19, 2014Observed: 6.81 ft at 2:00AM Dec 19, 2014Observed: 6.89 ft at 2:30AM Dec 19, 2014Observed: 6.91 ft at 3:00AM Dec 19, 2014Observed: 7 ft at 3:30AM Dec 19, 2014Observed: 7.04 ft at 4:00AM Dec 19, 2014Observed: 7.15 ft at 4:30AM Dec 19, 2014Observed: 7.19 ft at 5:00AM Dec 19, 2014Observed: 7.33 ft at 5:30AM Dec 19, 2014Observed: 7.39 ft at 6:00AM Dec 19, 2014Observed: 7.51 ft at 6:30AM Dec 19, 2014Observed: 7.54 ft at 7:00AM Dec 19, 2014Observed: 7.64 ft at 7:30AM Dec 19, 2014Observed: 7.66 ft at 8:00AM Dec 19, 2014Observed: 7.74 ft at 8:30AM Dec 19, 2014Observed: 7.78 ft at 9:00AM Dec 19, 2014Observed: 7.86 ft at 9:30AM Dec 19, 2014Observed: 7.89 ft at 10:00AM Dec 19, 2014Observed: 7.99 ft at 10:30AM Dec 19, 2014Observed: 8 ft at 11:00AM Dec 19, 2014Observed: 8.08 ft at 11:30AM Dec 19, 2014Observed: 8.08 ft at 12:00PM Dec 19, 2014Observed: 8.13 ft at 12:30PM Dec 19, 2014Observed: 8.14 ft at 1:00PM Dec 19, 2014Observed: 8.17 ft at 1:30PM Dec 19, 2014Observed: 8.18 ft at 2:00PM Dec 19, 2014Observed: 8.2 ft at 2:30PM Dec 19, 2014Observed: 8.22 ft at 3:00PM Dec 19, 2014Observed: 8.24 ft at 3:30PM Dec 19, 2014Observed: 8.24 ft at 4:00PM Dec 19, 2014Observed: 8.26 ft at 4:30PM Dec 19, 2014Observed: 8.27 ft at 5:00PM Dec 19, 2014Observed: 8.27 ft at 5:30PM Dec 19, 2014Observed: 8.28 ft at 6:00PM Dec 19, 2014Observed: 8.3 ft at 6:30PM Dec 19, 2014Observed: 8.31 ft at 7:00PM Dec 19, 2014Observed: 8.32 ft at 7:30PM Dec 19, 2014Observed: 8.32 ft at 8:00PM Dec 19, 2014Observed: 8.34 ft at 8:30PM Dec 19, 2014Observed: 8.34 ft at 9:00PM Dec 19, 2014Observed: 8.36 ft at 9:30PM Dec 19, 2014Observed: 8.36 ft at 10:00PM Dec 19, 2014Observed: 8.37 ft at 10:30PM Dec 19, 2014Observed: 8.38 ft at 11:00PM Dec 19, 2014Observed: 8.39 ft at 11:30PM Dec 19, 2014Observed: 8.41 ft at 12:00AM Dec 20, 2014Observed: 8.45 ft at 12:30AM Dec 20, 2014Observed: 8.47 ft at 1:00AM Dec 20, 2014Observed: 8.55 ft at 1:30AM Dec 20, 2014Observed: 8.58 ft at 2:00AM Dec 20, 2014Observed: 8.72 ft at 2:30AM Dec 20, 2014Observed: 8.76 ft at 3:00AM Dec 20, 2014Observed: 8.95 ft at 3:30AM Dec 20, 2014Observed: 9.01 ft at 4:00AM Dec 20, 2014Observed: 9.24 ft at 4:30AM Dec 20, 2014Observed: 9.31 ft at 5:00AM Dec 20, 2014Observed: 9.57 ft at 5:30AM Dec 20, 2014Observed: 9.67 ft at 6:00AM Dec 20, 2014Observed: 10 ft at 6:30AM Dec 20, 2014Observed: 10.12 ft at 7:00AM Dec 20, 2014Observed: 10.5 ft at 7:30AM Dec 20, 2014Observed: 10.63 ft at 8:00AM Dec 20, 2014Observed: 11.05 ft at 8:30AM Dec 20, 2014Observed: 11.17 ft at 9:00AM Dec 20, 2014Observed: 11.58 ft at 9:30AM Dec 20, 2014Observed: 11.71 ft at 10:00AM Dec 20, 2014Observed: 12.1 ft at 10:30AM Dec 20, 2014Observed: 12.26 ft at 11:00AM Dec 20, 2014Observed: 12.73 ft at 11:30AM Dec 20, 2014Observed: 12.88 ft at 12:00PM Dec 20, 2014Observed: 13.42 ft at 12:30PM Dec 20, 2014Observed: 13.57 ft at 1:00PM Dec 20, 2014Observed: 14.16 ft at 1:30PM Dec 20, 2014Observed: 14.34 ft at 2:00PM Dec 20, 2014Observed: 14.92 ft at 2:30PM Dec 20, 2014Observed: 15.09 ft at 3:00PM Dec 20, 2014Observed: 15.73 ft at 3:30PM Dec 20, 2014Observed: 15.9 ft at 4:00PM Dec 20, 2014Observed: 16.53 ft at 4:30PM Dec 20, 2014Observed: 16.72 ft at 5:00PM Dec 20, 2014Observed: 17.36 ft at 5:30PM Dec 20, 2014Observed: 17.54 ft at 6:00PM Dec 20, 2014Observed: 18.18 ft at 6:30PM Dec 20, 2014Observed: 18.35 ft at 7:00PM Dec 20, 2014Observed: 18.81 ft at 7:30PM Dec 20, 2014Observed: 18.9 ft at 8:00PM Dec 20, 2014Observed: 19.31 ft at 8:30PM Dec 20, 2014Observed: 19.42 ft at 9:00PM Dec 20, 2014Observed: 19.7 ft at 9:30PM Dec 20, 2014Observed: 19.77 ft at 10:00PM Dec 20, 2014Observed: 19.9 ft at 10:30PM Dec 20, 2014Observed: 20 ft at 11:00PM Dec 20, 2014Observed: 20.11 ft at 11:30PM Dec 20, 2014Highest Observation: 20.2 ft at 12:00AM Dec 21, 2014Forecast: 20.51 ft 4:00AM Dec 21, 2014Highest Forecast: 20.55 ft 10:00AM Dec 21, 2014Forecast: 20.4 ft 4:00PM Dec 21, 2014Forecast: 20.14 ft 10:00PM Dec 21, 2014Forecast: 19.73 ft 4:00AM Dec 22, 2014Forecast: 19.09 ft 10:00AM Dec 22, 2014Forecast: 18.11 ft 4:00PM Dec 22, 2014Forecast: 16.9 ft 10:00PM Dec 22, 2014Forecast: 15.67 ft 4:00AM Dec 23, 2014Forecast: 14.54 ft 10:00AM Dec 23, 2014Forecast: 13.4 ft 4:00PM Dec 23, 2014Forecast: 12.34 ft 10:00PM Dec 23, 2014Forecast: 11.55 ft 4:00AM Dec 24, 2014Forecast: 11.13 ft 10:00AM Dec 24, 2014Forecast: 11.25 ft 4:00PM Dec 24, 2014Forecast: 11.77 ft 10:00PM Dec 24, 2014Forecast: 12.13 ft 4:00AM Dec 25, 2014Forecast: 12.07 ft 10:00AM Dec 25, 2014Forecast: 11.69 ft 4:00PM Dec 25, 2014Forecast: 11.15 ft 10:00PM Dec 25, 2014USGS--Water Resources of the United StatesPHIO3(plotting HGIRG) Graph Created (12:33AM Dec 21, 2014)ObservedForecast (issued 12:14AM Dec 21)Latest observed value: 20.2 ft at 12:00 AM PST 21-Dec-2014. Flood Stage is 20 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (PST)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the Marys River near Philomath are issued routinely year-round.
Return to Area Map
Downstream Gauge Downstream Gauge - at Corvallis
Flood Categories (in feet)
Major Flood Stage: 20.7
Moderate Flood Stage: 0
Flood Stage: 20
Action Stage: 16
Low Stage (in feet): 0

Historic Crests
(1) 21.53 ft on 01/19/2012
(2) 21.11 ft on 12/30/2005
(3) 20.91 ft on 01/15/1974
(4) 20.90 ft on 12/06/1981
(5) 20.89 ft on 12/16/1982
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 20.61 ft on 11/20/2012
(2) 20.62 ft on 03/31/2012
(3) 20.10 ft on 03/16/2012
(4) 21.53 ft on 01/19/2012
(5) 21.11 ft on 12/30/2005
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

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

Zoom Level:14
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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
20.8 Above 20.8 ft, Expect widespread flooding in Philomath, especially on the south side in the vicinity of Chapel drive and Grange Hall Road, in central Benton County, and portions of Corvallis.
20.7 Above 20.7 ft, Expect road flooding in Philomath, especially the south part of town in the vicinity of Chapel Drive and Grange Hall Road. Portions of Highway 99W in Corvallis have historically been flooded at this level. If the Willamette River stage at Corvallis is at 18 ft or higher, widespread flooding of county roads and road clousures can be expected. If the Willamette at Corvallis is below 18 ft, roads may still be passable.
20.5 Above 20.5 ft, Expect flooding of some homes in the southern part of Corvallis to begin, especially when the Willamette is also running high. In south Corvallis, a trailer park and light industrial areas, including Evanite Fiber Plant, begin to flood. Flooding may begin in the vicinity of Chapel Drive and Grange Hall Road on the south side of Philomath. Problems with the sewers have historically begun in Philomath at this and higher stages.
20 Above 20.0 ft, Expect widespread low land and agricultural flooding. Some structures along the river may begin to flood.
Photos
(1) USGS gage equipment
(2) Upstream view
(3) Downstream view
About This Location Collapse

Latitude: 44.525000° N, Longitude: 123.334444° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 20 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 224.02 ft 244.02 ft  

Current/Historical Observations:

Additional Information Collapse
Archived Data 1976-2001 at USACE DataQuery
Archived Data 2001-present at USACE DataQuery
10-day Forecast/Trend, Northwest River Forecast Center
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
Portland Weather Forecast Office
5241 NE 122nd Avenue
Portland, OR 97230-1089
(503) 261-9246
Ask Questions/Webmaster
Page last modified: 20-Nov-2014 2:52 AM
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities