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 Spring 2024. Existing AHPS content and features will be preserved and expanded within NWPS. The NWS is now accepting feedback on NWPS. Please visit https://www.weather.gov/owp/operations for more information.

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.

DID YOU KNOW... Please try our new TEST hydrograph page link at: https://preview.water.noaa.gov/gauges/abcde - Just replace “abcde” with your local hydrograph five character ID found in the lower left corner of the hydrograph.  In late March of 2024, the base URL path will become water.noaa.gov.  Feedback can be provided HERE

Weather Forecast Office Charleston, SC

Southeast River Forecast Center

Hydrograph

River at a Glance

Download

Auto Refresh: OFF

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

NOTE: Gauge reading affected by ocean tides. NOTE: Forecasts are not available for the Savannah River at Savannah (IN MLLW). Only observed stages are available for this point.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Not Available Historic Crests (1) 12.64 ft on 09/11/2017 (2) 12.40 ft on 10/08/2016 (3) 10.84 ft on 11/07/2021 (4) 10.73 ft on 10/27/2015 (5) 10.72 ft on 11/23/2018 (6) 10.67 ft on 11/10/2022 (7) 10.61 ft on 06/04/2023 (8) 10.55 ft on 11/08/2021 (9) 10.49 ft on 11/24/2018 (10) 10.43 ft on 08/02/2023 (P): Preliminary values subject to further review. Recent Crests (1) 10.43 ft on 08/02/2023 (2) 10.61 ft on 06/04/2023 (3) 10.67 ft on 11/10/2022 (4) 10.55 ft on 11/08/2021 (5) 10.84 ft on 11/07/2021 (6) 10.49 ft on 11/24/2018 (7) 10.72 ft on 11/23/2018 (8) 12.64 ft on 09/11/2017 (9) 12.40 ft on 10/08/2016 (10) 10.73 ft on 10/27/2015 (P): Preliminary values subject to further review. Low Water Records Currently none available. 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: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
12.64	Peak tide level reached in association with Tropical Storm Irma on September 11th, 2017.
12.4	Peak tide level reached in association with Hurricane Matthew on October 8th, 2016.

About This Location

Latitude: 32.080417° N, Longitude: 81.081361° 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) Elevation (gauge height = flood stage) Elevation information source NAVD88 -4.265 Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 -3.346 Not Available Older USGS topographic maps, NGVD29 benchmarks MSL -4.413 Not Available Older USGS topographic maps, MSL benchmarks Other -8.285 Not Available Mean Higher High Water (MHHW), which is used as a proxy for inundation. Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Savannah (IN MLLW)

Additional Information

The vertical datum set by the USGS for this site is 0.0 feet above NAVD88. The data displayed here has been converted to Mean Lower Low Water (MLLW) by adding 4.265 feet. This conversion was determined by using NOAA/NOS's VDatum tool (https://vdatum.noaa.gov/).

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary SC USGS River Data GA USGS River Data Inundation Mapping Locations Drought Information

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Southeast River Forecast Center NWS Flood Safety Awareness Ensemble River Forecasts Hourly Precipitation

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 Charleston Weather Forecast Office 5777 South Aviation Avenue North Charleston, SC 29406 (843) 747-5860 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:30 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities