Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov 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: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

Weather Forecast Office Boise, ID

Northwest River Forecast Center

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Not Available Chance of Exceeding Levels During Entire Period Not Available Short-term Probabilistic Guidance (Experimental)

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Printable Image About this graph Tabular Data (UTC) Tabular Data (MDT) Datum: Not Available Metadata

Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions NOTE: Forecasts for the Payette River at Emmett are issued routinely year-round.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 15 Moderate Flood Stage: 12 Flood Stage: 10.5 Action Stage: 10 Low Stage (in feet): -9999 Historic Crests (1) 16.10 ft on 12/23/1964 (2) 15.90 ft on 01/01/1997 (3) 13.45 ft on 06/05/2010 (4) 13.00 ft on 05/01/1938 (5) 12.90 ft on 12/22/1955 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 9.47 ft on 06/13/2022 (P) (2) 5.85 ft on 06/02/2021 (3) 8.09 ft on 06/07/2020 (4) 12.59 ft on 04/09/2019 (5) 8.44 ft on 05/27/2018 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records (1) -1.49 ft on 01/07/1957 (2) -0.60 ft on 02/22/1989 (3) -0.38 ft on 10/29/1983 Show More Low Water Records For more information on your flood risk go to www.floodsmart.gov. Show FEMA's National Flood Hazard Layers FEMA's National Flood Hazard Layers not showing? Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map? Possible reasons: There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. The FEMA Web Mapping Service (WMS) is down. Note: Your zoom level may have changed. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers.

Zoom Level:14 Legend FEMA Layer Gauge Location 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

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15	Water will approach the top of the levee along Riverside Drive in Emmett. If the levee is breached, a large volume of water will flow down the canal which passes through Emmett, causing significant flooding in portions of Emmett. Water, about 1 foot deep will flow accoss portions of Highway 52 between Emmett and Montour. Extensive flooding of agricultural land and innundation of county roads near the river will occur.
14	Water, about 1/2 foot deep, will flow over Highway 52 between Black Canyon Dam and Montour. Water will approach houses along Riverside Street in Emmett. Bridge access into the Emmett Sports Fields in Emmett will be flooded. Extensive flooding of agricutlural land will occur near Montour, Emmett and Letha.
13	Extensive flooding of agricultural land will occur upstream and downstream from Emmett. Some county roads will be under water in the vicinity of Emmett, including Shale Rock Road. Railroad tracks between Emmett and Horseshoe Bend will be flooded. Water will begin flowing over Highway 52 between Black Canyon Dam and Montour. Bridge access into the Emmett Sports Fields near the river will be flooded.
12	Moderate flooding of agricultural land will occur upstream and downstream from Emmett. Farmland and pasture near the river will be underwater near Montour and Letha and livestock should be moved to higher ground. Water will reach the level of Shale Rock Road and the railroad tracks near Montour.
11.5	Some pasture and farmland near Montour will be under water and minor flooding will spread into agricultural land downstream from Emmett. Squaw Creek will backup and flood agricultural land near intersection of Highway 52 and Ola Road.
10.6	Minor flooding of pasture and farmland will occur upstream from Black Canyon Dam near Montour.

About This Location

Latitude: 43.930556° N, Longitude: 116.441667° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 10.5 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 2400.32 ft 2410.82 ft   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Emmett

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Snow Information FEMA National Flood Insurance Program USGS Water Resources

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