ALERT: Update on status of the nationwide data transmission error that prevents stream gauge data collected at affected locations from being displayed on the Advanced Hydrologic Prediction Services (AHPS) webpages. The USGS has restored the transmission from all of their gauges or has placed them in a seasonal outage (some Alaska gauges). There are a few USGS gauges that the NWS is not yet receiving the new transmissions and NWS is working to get that data by alternate means. A map of the status of USGS gauges is here. The status map of gauge outages from other agencies is here. The situation has greatly improved and will continue to improve but at a slower pace. The outage maps will now be updated once per week on Thursday. We apologize for the service interruption and hope to have the data restored as soon as possible.

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) Not Available

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

NOTE: Gauge reading may be affected by ice. Forecast flows are unadjusted for ice. NOTE: Forecasts for the Wenatchee River at Peshastin are issued routinely year-round.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 15 Moderate Flood Stage: 14 Flood Stage: 13 Action Stage: 12 Low Stage (in feet): 0 Historic Crests (1) 17.89 ft on 11/30/1995 (2) 17.58 ft on 11/25/1990 (3) 15.88 ft on 05/28/1948 (4) 15.03 ft on 11/07/2006 (5) 14.09 ft on 12/27/1980 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 10.85 ft on 11/18/2015 (2) 9.83 ft on 11/29/2014 (3) 9.48 ft on 05/17/2014 (4) 10.46 ft on 05/13/2013 (5) 9.40 ft on 06/02/2012 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records (1) 1.22 ft on 11/26/1993 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	Major flooding is likely throughout the valley between Leavenworth and Wenatchee.
13	Flooding is likely in low-lying areas, especially in the Cashmere area.
11	Minor flooding of low-lying areas near the river can be expected.

Low Water Impacts

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1311 cfs	Minimum base flow for September 1 and September 15 at this river gage, which is the lowest base flow of the year. The affected stream reach is from the confluence of Derby Creek to Beaver Valley Hwy, excluding Derby Creek and Icicle Creek. Water-rights junior to the base flows established in the 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 173-545.
700 cfs	Minimum base flow for October 15, October 31, January 1, January 15, February 1 and February 15 at this river gage, affecting water-rights junior to the base flows established June3, 1983 and prior to the 2008 rule.

About This Location

Latitude: 47.583333° N, Longitude: 120.618333° W, Horizontal Datum: NAD27 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 13 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 1028.04 ft 1041.04 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: Corps of Engineers (COE) Info for Peshastin U.S. Geological Survey (USGS) Data and Site Info for Peshastin

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 Flood Damage Costs/Fatalities in the US, 1903 - 2014 AHPS Web Brochure 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: 21-Dec-2016 5:18 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities