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: 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 https://www.weather.gov/owp/operations, as described in the StoryMap here.

Weather Forecast Office Spokane, WA

Northwest River Forecast Center

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

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Printable Image About this graph Tabular Data (UTC) Tabular Data (PDT) Datum: NGVD29 Metadata

NOTE: Forecasts for the Methow River near Pateros are issued routinely year-round.

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Upstream Gauge

Flood Categories (in feet) Major Flood Stage: 12 Moderate Flood Stage: 11 Flood Stage: 10 Action Stage: 9 Low Stage (in feet): 0 Historic Crests (1) 12.25 ft on 05/31/1972 (2) 11.26 ft on 06/17/1974 (3) 10.68 ft on 05/31/1983 (4) 10.65 ft on 05/10/2018 (5) 10.63 ft on 05/19/2006 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 8.28 ft on 06/05/2022 (P) (2) 7.39 ft on 06/03/2021 (3) 8.00 ft on 05/31/2020 (4) 6.59 ft on 05/18/2019 (5) 10.65 ft on 05/10/2018 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records (1) 0.90 ft on 01/10/1974 (2) 1.38 ft on 09/07/2020 Show More Low Water Records

Zoom Level:11 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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12	Significant flooding is likely throughout the Methow Valley from Mazama to Pateros.
10	Minor flooding of adjacent roads and low-lying areas is likely throughout the Methow Valley from Mazama to Pateros.

Low Water Impacts

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300 cfs	Minimum base flow for August 15 and September 1st & 15th at this river gage, which is the lowest base flow of the year. The affected stream reach is from the confluence with Wells Pool to the confluence of Twisp River. Water-rights junior to the base flows established in this rule may be restricted if streamflow drops below this value. For more information on this and the minimum base flows for other times in the year and for other reaches, refer to Washington Administrative Code (WAC) Chapter 173-548.

About This Location

Latitude: 48.077400° N, Longitude: 119.985100° 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 29 900 ft 910 ft Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other 900 ft 910 ft   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Pateros

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations Pacific Northwest Water Supply Forecasts U.S. Bureau of Reclamation Hydromet Program - Pacific Northwest Washington State Dept of Ecology River & Streamflow Monitoring Network

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Weather Forecast Office Spokane, Washington Northwest U.S. River Flood Outlook Snow Information National Flood Insurance Program USGS Idaho Water Science Center USGS Washington Water Science Center U.S. Army Corps of Engineers - Seattle District Natural Resources Conservation Service - Water & Climate Center U.S. Drought Portal Idaho Department of Water Resources International Joint Commission Available Water Temperatures - Updated Daily Washington State Digital Flood Hazard Map - Dept of Ecology Idaho Dept of Water Resources - Flood Hazard Maps

Collaborative Agencies 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 Spokane Weather Forecast Office 2601 N. Rambo Rd. Spokane, WA 99224 (509) 244-0110 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:27 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities