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Hydrograph River at a Glance Download
Grande Ronde River at Troy Stage (ft)Flow (cfs)Highest Observation: 3.38 ft at 1:00AM Jul 02, 2015Observed: 3.37 ft at 1:15AM Jul 02, 2015Highest Observation: 3.38 ft at 1:30AM Jul 02, 2015Highest Observation: 3.38 ft at 1:45AM Jul 02, 2015Highest Observation: 3.38 ft at 2:00AM Jul 02, 2015Observed: 3.37 ft at 2:15AM Jul 02, 2015Highest Observation: 3.38 ft at 2:30AM Jul 02, 2015Observed: 3.37 ft at 2:45AM Jul 02, 2015Highest Observation: 3.38 ft at 3:00AM Jul 02, 2015Observed: 3.37 ft at 3:15AM Jul 02, 2015Highest Observation: 3.38 ft at 3:30AM Jul 02, 2015Observed: 3.37 ft at 3:45AM Jul 02, 2015Highest Observation: 3.38 ft at 4:00AM Jul 02, 2015Highest Observation: 3.38 ft at 4:15AM Jul 02, 2015Highest Observation: 3.38 ft at 4:30AM Jul 02, 2015Observed: 3.37 ft at 4:45AM Jul 02, 2015Observed: 3.37 ft at 5:00AM Jul 02, 2015Observed: 3.37 ft at 5:15AM Jul 02, 2015Observed: 3.36 ft at 5:30AM Jul 02, 2015Observed: 3.37 ft at 5:45AM Jul 02, 2015Observed: 3.36 ft at 6:00AM Jul 02, 2015Highest Observation: 3.38 ft at 6:15AM Jul 02, 2015Observed: 3.36 ft at 6:30AM Jul 02, 2015Observed: 3.36 ft at 6:45AM Jul 02, 2015Observed: 3.37 ft at 7:00AM Jul 02, 2015Observed: 3.36 ft at 7:15AM Jul 02, 2015Observed: 3.36 ft at 7:30AM Jul 02, 2015Observed: 3.37 ft at 7:45AM Jul 02, 2015Observed: 3.35 ft at 8:00AM Jul 02, 2015Observed: 3.36 ft at 8:15AM Jul 02, 2015Observed: 3.35 ft at 8:30AM Jul 02, 2015Observed: 3.36 ft at 8:45AM Jul 02, 2015Observed: 3.36 ft at 9:00AM Jul 02, 2015Observed: 3.36 ft at 9:15AM Jul 02, 2015Observed: 3.35 ft at 9:30AM Jul 02, 2015Observed: 3.34 ft at 9:45AM Jul 02, 2015Observed: 3.35 ft at 10:00AM Jul 02, 2015Observed: 3.36 ft at 10:15AM Jul 02, 2015Observed: 3.36 ft at 10:30AM Jul 02, 2015Observed: 3.35 ft at 10:45AM Jul 02, 2015Observed: 3.36 ft at 11:00AM Jul 02, 2015Observed: 3.35 ft at 11:15AM Jul 02, 2015Observed: 3.35 ft at 11:30AM Jul 02, 2015Observed: 3.34 ft at 11:45AM Jul 02, 2015Observed: 3.34 ft at 12:00PM Jul 02, 2015Observed: 3.34 ft at 12:15PM Jul 02, 2015Observed: 3.34 ft at 12:30PM Jul 02, 2015Observed: 3.34 ft at 12:45PM Jul 02, 2015Observed: 3.34 ft at 1:00PM Jul 02, 2015Observed: 3.35 ft at 1:15PM Jul 02, 2015Observed: 3.34 ft at 1:30PM Jul 02, 2015Observed: 3.34 ft at 1:45PM Jul 02, 2015Observed: 3.34 ft at 2:00PM Jul 02, 2015Observed: 3.34 ft at 2:15PM Jul 02, 2015Observed: 3.34 ft at 2:30PM Jul 02, 2015Observed: 3.34 ft at 2:45PM Jul 02, 2015Observed: 3.33 ft at 3:00PM Jul 02, 2015Observed: 3.32 ft at 3:15PM Jul 02, 2015Observed: 3.32 ft at 3:30PM Jul 02, 2015Observed: 3.31 ft at 3:45PM Jul 02, 2015Observed: 3.31 ft at 4:00PM Jul 02, 2015Observed: 3.3 ft at 4:15PM Jul 02, 2015Observed: 3.31 ft at 4:30PM Jul 02, 2015Observed: 3.32 ft at 4:45PM Jul 02, 2015Observed: 3.3 ft at 5:00PM Jul 02, 2015Observed: 3.3 ft at 5:15PM Jul 02, 2015Observed: 3.29 ft at 5:30PM Jul 02, 2015Observed: 3.3 ft at 5:45PM Jul 02, 2015Observed: 3.31 ft at 6:00PM Jul 02, 2015Observed: 3.3 ft at 6:15PM Jul 02, 2015Observed: 3.3 ft at 6:30PM Jul 02, 2015Observed: 3.3 ft at 6:45PM Jul 02, 2015Observed: 3.29 ft at 7:00PM Jul 02, 2015Observed: 3.3 ft at 7:15PM Jul 02, 2015Observed: 3.29 ft at 7:30PM Jul 02, 2015Observed: 3.29 ft at 7:45PM Jul 02, 2015Observed: 3.29 ft at 8:00PM Jul 02, 2015Observed: 3.29 ft at 8:15PM Jul 02, 2015Observed: 3.29 ft at 8:30PM Jul 02, 2015Observed: 3.29 ft at 8:45PM Jul 02, 2015Observed: 3.29 ft at 9:00PM Jul 02, 2015Observed: 3.29 ft at 9:15PM Jul 02, 2015Observed: 3.28 ft at 9:30PM Jul 02, 2015Observed: 3.28 ft at 9:45PM Jul 02, 2015Observed: 3.29 ft at 10:00PM Jul 02, 2015Observed: 3.28 ft at 10:15PM Jul 02, 2015Observed: 3.28 ft at 10:30PM Jul 02, 2015Observed: 3.28 ft at 10:45PM Jul 02, 2015Observed: 3.29 ft at 11:00PM Jul 02, 2015Observed: 3.29 ft at 11:15PM Jul 02, 2015Observed: 3.29 ft at 11:30PM Jul 02, 2015Observed: 3.29 ft at 11:45PM Jul 02, 2015Observed: 3.28 ft at 12:00AM Jul 03, 2015Observed: 3.28 ft at 12:15AM Jul 03, 2015Observed: 3.3 ft at 12:30AM Jul 03, 2015Observed: 3.3 ft at 12:45AM Jul 03, 2015Observed: 3.29 ft at 1:00AM Jul 03, 2015Observed: 3.28 ft at 1:15AM Jul 03, 2015Observed: 3.29 ft at 1:30AM Jul 03, 2015Observed: 3.28 ft at 1:45AM Jul 03, 2015Observed: 3.3 ft at 2:00AM Jul 03, 2015Observed: 3.3 ft at 2:15AM Jul 03, 2015Observed: 3.29 ft at 2:30AM Jul 03, 2015Observed: 3.3 ft at 2:45AM Jul 03, 2015Observed: 3.3 ft at 3:00AM Jul 03, 2015Observed: 3.3 ft at 3:15AM Jul 03, 2015Observed: 3.3 ft at 3:30AM Jul 03, 2015Observed: 3.3 ft at 3:45AM Jul 03, 2015Observed: 3.3 ft at 4:00AM Jul 03, 2015Observed: 3.3 ft at 4:15AM Jul 03, 2015Observed: 3.31 ft at 4:30AM Jul 03, 2015Observed: 3.3 ft at 4:45AM Jul 03, 2015Observed: 3.3 ft at 5:00AM Jul 03, 2015Observed: 3.29 ft at 5:15AM Jul 03, 2015Observed: 3.31 ft at 5:30AM Jul 03, 2015Observed: 3.3 ft at 5:45AM Jul 03, 2015Observed: 3.3 ft at 6:00AM Jul 03, 2015Observed: 3.31 ft at 6:15AM Jul 03, 2015Observed: 3.3 ft at 6:30AM Jul 03, 2015Observed: 3.31 ft at 6:45AM Jul 03, 2015Observed: 3.31 ft at 7:00AM Jul 03, 2015Observed: 3.32 ft at 7:15AM Jul 03, 2015Observed: 3.32 ft at 7:30AM Jul 03, 2015Observed: 3.32 ft at 7:45AM Jul 03, 2015Observed: 3.31 ft at 8:00AM Jul 03, 2015Observed: 3.32 ft at 8:15AM Jul 03, 2015Observed: 3.32 ft at 8:30AM Jul 03, 2015Observed: 3.31 ft at 8:45AM Jul 03, 2015Observed: 3.3 ft at 9:00AM Jul 03, 2015Observed: 3.32 ft at 9:15AM Jul 03, 2015Observed: 3.31 ft at 9:30AM Jul 03, 2015Observed: 3.3 ft at 9:45AM Jul 03, 2015Observed: 3.29 ft at 10:00AM Jul 03, 2015Observed: 3.31 ft at 10:15AM Jul 03, 2015Observed: 3.3 ft at 10:30AM Jul 03, 2015Observed: 3.29 ft at 10:45AM Jul 03, 2015Observed: 3.29 ft at 11:00AM Jul 03, 2015Observed: 3.28 ft at 11:15AM Jul 03, 2015Observed: 3.28 ft at 11:30AM Jul 03, 2015Observed: 3.28 ft at 11:45AM Jul 03, 2015Observed: 3.28 ft at 12:00PM Jul 03, 2015Observed: 3.28 ft at 12:15PM Jul 03, 2015Observed: 3.27 ft at 12:30PM Jul 03, 2015Observed: 3.3 ft at 12:45PM Jul 03, 2015Observed: 3.28 ft at 1:00PM Jul 03, 2015Observed: 3.26 ft at 1:15PM Jul 03, 2015Observed: 3.28 ft at 1:30PM Jul 03, 2015Observed: 3.26 ft at 1:45PM Jul 03, 2015Observed: 3.26 ft at 2:00PM Jul 03, 2015Observed: 3.25 ft at 2:15PM Jul 03, 2015Observed: 3.27 ft at 2:30PM Jul 03, 2015Observed: 3.29 ft at 2:45PM Jul 03, 2015Observed: 3.29 ft at 3:00PM Jul 03, 2015Observed: 3.3 ft at 3:15PM Jul 03, 2015Observed: 3.29 ft at 3:30PM Jul 03, 2015Observed: 3.29 ft at 3:45PM Jul 03, 2015Observed: 3.29 ft at 4:00PM Jul 03, 2015Observed: 3.29 ft at 4:15PM Jul 03, 2015Observed: 3.29 ft at 4:30PM Jul 03, 2015Observed: 3.27 ft at 4:45PM Jul 03, 2015Observed: 3.26 ft at 5:00PM Jul 03, 2015Observed: 3.26 ft at 5:15PM Jul 03, 2015Observed: 3.26 ft at 5:30PM Jul 03, 2015Observed: 3.26 ft at 5:45PM Jul 03, 2015Observed: 3.26 ft at 6:00PM Jul 03, 2015Observed: 3.26 ft at 6:15PM Jul 03, 2015Observed: 3.25 ft at 6:30PM Jul 03, 2015Observed: 3.26 ft at 6:45PM Jul 03, 2015Observed: 3.25 ft at 7:00PM Jul 03, 2015Observed: 3.26 ft at 7:15PM Jul 03, 2015Observed: 3.24 ft at 7:30PM Jul 03, 2015Observed: 3.26 ft at 7:45PM Jul 03, 2015Observed: 3.25 ft at 8:00PM Jul 03, 2015Observed: 3.25 ft at 8:15PM Jul 03, 2015Observed: 3.24 ft at 8:30PM Jul 03, 2015Observed: 3.24 ft at 8:45PM Jul 03, 2015Observed: 3.25 ft at 9:00PM Jul 03, 2015Observed: 3.25 ft at 9:15PM Jul 03, 2015Observed: 3.24 ft at 9:30PM Jul 03, 2015Observed: 3.24 ft at 9:45PM Jul 03, 2015Observed: 3.24 ft at 10:00PM Jul 03, 2015Observed: 3.25 ft at 10:15PM Jul 03, 2015Observed: 3.25 ft at 10:30PM Jul 03, 2015Observed: 3.24 ft at 10:45PM Jul 03, 2015Observed: 3.24 ft at 11:00PM Jul 03, 2015Observed: 3.24 ft at 11:15PM Jul 03, 2015Observed: 3.24 ft at 11:30PM Jul 03, 2015Observed: 3.23 ft at 11:45PM Jul 03, 2015Observed: 3.23 ft at 12:00AM Jul 04, 2015Observed: 3.24 ft at 12:15AM Jul 04, 2015Observed: 3.23 ft at 12:30AM Jul 04, 2015Observed: 3.24 ft at 12:45AM Jul 04, 2015Observed: 3.24 ft at 1:00AM Jul 04, 2015Observed: 3.23 ft at 1:15AM Jul 04, 2015Observed: 3.24 ft at 1:30AM Jul 04, 2015Observed: 3.24 ft at 1:45AM Jul 04, 2015Observed: 3.24 ft at 2:00AM Jul 04, 2015Observed: 3.24 ft at 2:15AM Jul 04, 2015Observed: 3.25 ft at 2:30AM Jul 04, 2015Observed: 3.25 ft at 2:45AM Jul 04, 2015Observed: 3.25 ft at 3:00AM Jul 04, 2015Observed: 3.24 ft at 3:15AM Jul 04, 2015Observed: 3.24 ft at 3:30AM Jul 04, 2015Observed: 3.26 ft at 3:45AM Jul 04, 2015Observed: 3.25 ft at 4:00AM Jul 04, 2015Observed: 3.25 ft at 4:15AM Jul 04, 2015Observed: 3.25 ft at 4:30AM Jul 04, 2015Observed: 3.25 ft at 4:45AM Jul 04, 2015Observed: 3.25 ft at 5:00AM Jul 04, 2015Observed: 3.25 ft at 5:15AM Jul 04, 2015Observed: 3.24 ft at 5:30AM Jul 04, 2015Observed: 3.24 ft at 5:45AM Jul 04, 2015Observed: 3.24 ft at 6:00AM Jul 04, 2015Observed: 3.23 ft at 6:15AM Jul 04, 2015Observed: 3.24 ft at 6:30AM Jul 04, 2015Observed: 3.24 ft at 6:45AM Jul 04, 2015Observed: 3.23 ft at 7:00AM Jul 04, 2015Observed: 3.23 ft at 7:15AM Jul 04, 2015Observed: 3.24 ft at 7:30AM Jul 04, 2015Observed: 3.23 ft at 7:45AM Jul 04, 2015Observed: 3.23 ft at 8:00AM Jul 04, 2015Observed: 3.24 ft at 8:15AM Jul 04, 2015Observed: 3.24 ft at 8:30AM Jul 04, 2015Observed: 3.23 ft at 8:45AM Jul 04, 2015Observed: 3.23 ft at 9:00AM Jul 04, 2015Observed: 3.24 ft at 9:15AM Jul 04, 2015Observed: 3.24 ft at 9:30AM Jul 04, 2015Observed: 3.23 ft at 9:45AM Jul 04, 2015Observed: 3.24 ft at 10:00AM Jul 04, 2015Observed: 3.23 ft at 10:15AM Jul 04, 2015Observed: 3.24 ft at 10:30AM Jul 04, 2015Observed: 3.23 ft at 10:45AM Jul 04, 2015Observed: 3.24 ft at 11:00AM Jul 04, 2015Observed: 3.23 ft at 11:15AM Jul 04, 2015Observed: 3.25 ft at 11:30AM Jul 04, 2015Observed: 3.22 ft at 11:45AM Jul 04, 2015Observed: 3.22 ft at 12:00PM Jul 04, 2015Observed: 3.22 ft at 12:15PM Jul 04, 2015Observed: 3.22 ft at 12:30PM Jul 04, 2015Observed: 3.22 ft at 12:45PM Jul 04, 2015Observed: 3.22 ft at 1:00PM Jul 04, 2015Observed: 3.21 ft at 1:15PM Jul 04, 2015Observed: 3.22 ft at 1:30PM Jul 04, 2015Observed: 3.21 ft at 1:45PM Jul 04, 2015Observed: 3.21 ft at 2:00PM Jul 04, 2015Observed: 3.21 ft at 2:15PM Jul 04, 2015Observed: 3.21 ft at 2:30PM Jul 04, 2015Observed: 3.21 ft at 2:45PM Jul 04, 2015Observed: 3.21 ft at 3:00PM Jul 04, 2015Observed: 3.21 ft at 3:15PM Jul 04, 2015Observed: 3.2 ft at 3:30PM Jul 04, 2015Observed: 3.21 ft at 3:45PM Jul 04, 2015Observed: 3.2 ft at 4:00PM Jul 04, 2015Observed: 3.2 ft at 4:15PM Jul 04, 2015Observed: 3.21 ft at 4:30PM Jul 04, 2015Observed: 3.2 ft at 4:45PM Jul 04, 2015Observed: 3.2 ft at 5:00PM Jul 04, 2015Observed: 3.19 ft at 5:15PM Jul 04, 2015Observed: 3.19 ft at 5:30PM Jul 04, 2015Observed: 3.2 ft at 5:45PM Jul 04, 2015Observed: 3.2 ft at 6:00PM Jul 04, 2015Observed: 3.2 ft at 6:15PM Jul 04, 2015Observed: 3.2 ft at 6:30PM Jul 04, 2015Observed: 3.2 ft at 6:45PM Jul 04, 2015Observed: 3.19 ft at 7:00PM Jul 04, 2015Observed: 3.2 ft at 7:15PM Jul 04, 2015Observed: 3.2 ft at 7:30PM Jul 04, 2015Observed: 3.19 ft at 7:45PM Jul 04, 2015Observed: 3.19 ft at 8:00PM Jul 04, 2015Observed: 3.19 ft at 8:15PM Jul 04, 2015Observed: 3.19 ft at 8:30PM Jul 04, 2015Observed: 3.19 ft at 8:45PM Jul 04, 2015Observed: 3.19 ft at 9:00PM Jul 04, 2015Observed: 3.19 ft at 9:15PM Jul 04, 2015Observed: 3.19 ft at 9:30PM Jul 04, 2015Observed: 3.19 ft at 9:45PM Jul 04, 2015Observed: 3.19 ft at 10:00PM Jul 04, 2015Observed: 3.19 ft at 10:15PM Jul 04, 2015Observed: 3.2 ft at 10:30PM Jul 04, 2015Observed: 3.19 ft at 10:45PM Jul 04, 2015Observed: 3.19 ft at 11:00PM Jul 04, 2015Observed: 3.19 ft at 11:15PM Jul 04, 2015Observed: 3.2 ft at 11:30PM Jul 04, 2015Observed: 3.18 ft at 11:45PM Jul 04, 2015Observed: 3.2 ft at 12:00AM Jul 05, 2015Highest Forecast: 3.23 ft 5:00AM Jul 05, 2015Highest Forecast: 3.23 ft 11:00AM Jul 05, 2015Forecast: 3.22 ft 5:00PM Jul 05, 2015Forecast: 3.22 ft 11:00PM Jul 05, 2015Forecast: 3.22 ft 5:00AM Jul 06, 2015Forecast: 3.21 ft 11:00AM Jul 06, 2015Forecast: 3.21 ft 5:00PM Jul 06, 2015Forecast: 3.2 ft 11:00PM Jul 06, 2015Forecast: 3.2 ft 5:00AM Jul 07, 2015Forecast: 3.19 ft 11:00AM Jul 07, 2015Forecast: 3.19 ft 5:00PM Jul 07, 2015Forecast: 3.19 ft 11:00PM Jul 07, 2015Forecast: 3.18 ft 5:00AM Jul 08, 2015Forecast: 3.18 ft 11:00AM Jul 08, 2015Forecast: 3.17 ft 5:00PM Jul 08, 2015Forecast: 3.17 ft 11:00PM Jul 08, 2015Forecast: 3.17 ft 5:00AM Jul 09, 2015Forecast: 3.17 ft 11:00AM Jul 09, 2015Forecast: 3.16 ft 5:00PM Jul 09, 2015Forecast: 3.16 ft 11:00PM Jul 09, 2015Forecast: 3.15 ft 5:00AM Jul 10, 2015Forecast: 3.15 ft 11:00AM Jul 10, 2015Forecast: 3.15 ft 5:00PM Jul 10, 2015Forecast: 3.15 ft 11:00PM Jul 10, 2015Forecast: 3.15 ft 5:00AM Jul 11, 2015Forecast: 3.14 ft 11:00AM Jul 11, 2015Forecast: 3.14 ft 5:00PM Jul 11, 2015Forecast: 3.14 ft 11:00PM Jul 11, 2015USGS--Water Resources of the United StatesTRYO3(plotting HGIRG) Graph Created (12:47AM Jul 5, 2015)ObservedForecast (issued 8:35AM Jul 4)Latest observed value: 3.2 ft at 12:00 AM PDT 5-Jul-2015. Flood Stage is 10 ft
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the Grande Ronde River at Troy are issued routinely year-round.
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Upstream Gauge - near Perry Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 12
Moderate Flood Stage: 11
Flood Stage: 10
Action Stage: 8
Low Stage (in feet): 0

Historic Crests
(1) 13.76 ft on 02/09/1996
(2) 12.65 ft on 01/01/1997
(3) 11.85 ft on 03/10/2014
(4) 11.25 ft on 12/23/1964
(5) 10.83 ft on 06/05/2010
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 11.85 ft on 03/10/2014
(2) 10.30 ft on 01/17/2011
(3) 10.83 ft on 06/05/2010
(4) 10.44 ft on 04/14/2002
(5) 9.51 ft on 05/26/1998
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -0.99 ft on 11/25/1993
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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
16 Flooding along the left bank into the town of Troy.
11 Extensive flooding of fields around Troy are possible, but no residences are threatened.
10 Minor flooding of fields adjacent to the river from Elgin through Troy and downstream to the confluence of the Snake River.
9 Minor flooding in lowland fields from Elgin downstream through Troy and through southeast Washington to the Snake River.
About This Location Collapse

Latitude: 45.946389° N, Longitude: 117.448333° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 10 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 1585.98 ft 1595.98 ft 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.
NWS Information
National Weather Service
Pendleton Weather Forecast Office
2001 NW 56th Drive
Pendleton, OR 97801
(541) 276-7832
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Page last modified: 12-Feb-2015 9:31 PM
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