National Weather Service Advanced Hydrologic Prediction Service

Web Portal Changes: In Spring 2024, the Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS) at a repurposed https://water.noaa.gov. A preview of NWPS is available here, where you can see your station hydrograph by replacing SSSSS with the station 5-character id: https://preview.water.noaa.gov/gauges/SSSSS.

Flood Inundation Mapping: Experimental real-time flood Inundation mapping services for 10% of the United States are now available via the NWS Map Viewer. Additional products and geospatial services depicting River Forecast Center and National Water Model forecasts continue to be accessible as described in the StoryMap here.

Please visit https://www.weather.gov/owp/operations for more information.

NOTE: Forecasts are not available for the Coosa River at Lay Dam. Only observed stages are available for this point.

Default HydrographScale to Flood Categories

Flood Categories (in feet) Major Flood Stage: 0 Moderate Flood Stage: 0 Flood Stage: 0 Action Stage: 0 Low Stage (in feet): 0 Historic Crests (P): Preliminary values subject to further review. Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available. Show FEMA’s National Flood Hazard Layers FEMA’s National Flood Hazard Layers not showing? Note: Your zoom level may have changed. ESRI’s zoom levels must be between 14 and 16 to show National Flood Hazard layers.

Legend 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.

Latitude: 32.963611° N, Longitude: 86.518611° 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 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 NULL NULL

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.