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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: The National Hydrologic Discussion, Area Hydrologic Discussion, and Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via, as described in the StoryMap here.

Hydrograph River at a Glance Download
Reservoir at Lookout Point nr Lowell Forebay Elevation (ft)Highest Observation: 809.37 ft at 11:59PM Sep 16, 2023Observed: 808.21 ft at 11:59PM Sep 17, 2023Observed: 807.06 ft at 11:59PM Sep 18, 2023Observed: 805.86 ft at 11:59PM Sep 19, 2023Observed: 804.58 ft at 11:59PM Sep 20, 2023Observed: 803.32 ft at 11:59PM Sep 21, 2023Observed: 802.05 ft at 11:59PM Sep 22, 2023Highest Forecast: 801.39 ft 5:00AM Sep 23, 2023Forecast: 801.07 ft 11:00AM Sep 23, 2023Forecast: 800.75 ft 5:00PM Sep 23, 2023Forecast: 800.43 ft 11:00PM Sep 23, 2023Forecast: 800.11 ft 5:00AM Sep 24, 2023Forecast: 799.74 ft 11:00AM Sep 24, 2023Forecast: 799.33 ft 5:00PM Sep 24, 2023Forecast: 798.93 ft 11:00PM Sep 24, 2023Forecast: 798.54 ft 5:00AM Sep 25, 2023Forecast: 798.15 ft 11:00AM Sep 25, 2023Forecast: 797.78 ft 5:00PM Sep 25, 2023Forecast: 797.43 ft 11:00PM Sep 25, 2023Forecast: 797.09 ft 5:00AM Sep 26, 2023Forecast: 796.74 ft 11:00AM Sep 26, 2023Forecast: 796.39 ft 5:00PM Sep 26, 2023Forecast: 796.03 ft 11:00PM Sep 26, 2023Forecast: 795.67 ft 5:00AM Sep 27, 2023Forecast: 795.31 ft 11:00AM Sep 27, 2023Forecast: 794.96 ft 5:00PM Sep 27, 2023Forecast: 794.6 ft 11:00PM Sep 27, 2023Forecast: 794.24 ft 5:00AM Sep 28, 2023Forecast: 793.87 ft 11:00AM Sep 28, 2023Forecast: 793.51 ft 5:00PM Sep 28, 2023Forecast: 793.13 ft 11:00PM Sep 28, 2023Forecast: 792.75 ft 5:00AM Sep 29, 2023Forecast: 792.36 ft 11:00AM Sep 29, 2023Forecast: 791.98 ft 5:00PM Sep 29, 2023Forecast: 791.59 ft 11:00PM Sep 29, 2023US Army Corps of EngineersLOPO3(plotting HFIRR) Graph Created (1:04AM Sep 23, 2023)ObservedForecast (issued 3:34PM Sep 22)Latest observed value: 802.05 ft at 11:59 PM PDT 22-Sep-2023.
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: Not Available
NOTE: Forecasts for the Reservoir at Lookout Point nr Lowell are issued routinely year-round.
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Downstream Gauge Downstream Gauge - at Dexter
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
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.
Zoom Level:16
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Gauge LocationGauge Map Marker
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: 43.916667° N, Longitude: 122.766667° 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)
(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 0 ft 0 ft  
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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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