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 Seattle, WA

Northwest River Forecast Center

Hydrograph

River at a Glance

Download

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

Auto Refresh: OFF

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

NOTE: River forecasts for this location take into account past and future precipitation. The stages/flows that will occur may be different if future rainfall is different than forecast. Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions NOTE: Forecasts for the Nisqually River near National are issued routinely year-round.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Downstream Gauge

Flood Categories (in KCFS) Major Flood Flow: 15 Moderate Flood Flow: 10 Flood Flow: 8 Action Flow: 5.4 Low Stage (in feet): 0 Historic Crests (1) 21,800 cfs on 11/06/2006 (2) 21,200 cfs on 02/08/1996 (3) 17,100 cfs on 12/02/1977 (4) 16,500 cfs on 11/29/1995 (5) 16,000 cfs on 11/28/1995 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 11,100 cfs on 11/05/2022 (P) (2) 6,610 cfs on 01/13/2021 (P) (3) 8,300 cfs on 11/23/2017 (P) (4) 11,360 cfs on 10/22/2017 (P) (5) 13,200 cfs on 11/05/2015 (P) Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records (1) 100 cfs on 11/17/1987

Zoom Level:16 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

If you notice any errors in the below information, please contact our Webmaster
15000	the Nisqually River will cause major flooding along the upper reaches of the river from Mt Rainier National Park downstream to Alder Lake. Deep and swift flood waters will inundate roads...pasture lands...and farms. The river will likely overtop some levees. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Nisqually River Basin.
10000	the Nisqually River will flood along the upper reaches of the river from Mt Rainier National Park downstream to Alder Lake. Swift waters will flood roads...pasture lands...and farms. Erosion may damage the river banks.
8000	the Nisqually River will flood roads and pasture lands along the upper reaches of the river from Mt Rainier National Park downstream to Alder Lake.
6000	the Nisqually River will locally spill over its banks along the upper reaches of the river downstream to Alder Lake.

About This Location

Latitude: 46.752778° N, Longitude: 122.082500° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS flow Not Available Not Available 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 1450 ft 1460 ft   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for National

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary USGS Streamflow Data USACE real time/archived data query

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Inundation Mapping Locations Snow Information Flood Smart/National Flood Insurance Program

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 Seattle Weather Forecast Office 7600 Sandpoint Way NE Seattle, WA 98115-6349 (206) 526-6087 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:27 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities