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: 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.

Weather Forecast Office Morristown, TN

Lower Mississippi 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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NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time. Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions NOTE: Forecasts for the Toccoa River (GA) / Ocoee River (TN) at Copperhill are issued as needed during times of high water, but are not routinely available.

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Flood Categories (in feet) Major Flood Stage: 14 Moderate Flood Stage: 12 Flood Stage: 8 Action Stage: 6 Low Stage (in feet): -9999 Historic Crests (1) 17.55 ft on 02/16/1990 (2) 9.85 ft on 01/27/1996 (3) 9.61 ft on 12/24/2015 (P) (4) 9.37 ft on 03/26/2021 (P) (5) 9.15 ft on 02/06/2020 (P) (6) 8.79 ft on 12/02/2015 (7) 8.59 ft on 09/17/2004 (8) 7.79 ft on 03/31/2021 (P) (9) 6.67 ft on 03/03/2019 (P) (10) 6.52 ft on 03/01/2018 (P) Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 7.79 ft on 03/31/2021 (P) (2) 9.37 ft on 03/26/2021 (P) (3) 9.15 ft on 02/06/2020 (P) (4) 6.67 ft on 03/03/2019 (P) (5) 6.52 ft on 03/01/2018 (P) (6) 9.61 ft on 12/24/2015 (P) (7) 8.79 ft on 12/02/2015 (8) 8.59 ft on 09/17/2004 (9) 9.85 ft on 01/27/1996 (10) 17.55 ft on 02/16/1990 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records (1) 0.10 ft on 07/16/1913 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:15 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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16	A catastrophic flood event affecting much of the infrastructure in Copperhill Tennessee and McCaysville Georgia. Numerous homes, businesses, and roads will be flooded with several feet of water. Transportation between the two towns will be cutoff as both bridges will be topped. Massive evacuations will be needed. River Road and the Horsebend Park and its facilities will be completely flooded.
14	Major flooding occurs with widespread inundation along the river in Copperhill Tennessee and McCaysville Georgia. Numerous homes, businesses, the Copperhill Post Office and Ocoee Street will be flooded. Evacuations will be needed. The Georgia Highway 5 bridge will be topped. The Bridge Street bridge will form an obstacle and act like a dam causing some backwater and erosion eddies to the sides of the bridge. Officials will likely close the bridge. The Horsebend Park and its facilities will be flooded.
13	Moderate flooding expands in areas along the river in Copperhill Tennessee and McCaysville Georgia. The flood waters will reach foundations of homes, businesses and affect portions of Ocoee Street, including the Copperhill Post Office. Some evacuations may be needed. The Georgia Highway 5 bridge will form an obstacle and act like a dam causing some backwater and erosion eddies to the sides of the bridge. Officials will likely close the bridge. The Horsebend Park including the restrooms will be flooded.
12	Moderate flooding begins and expands further into the woodlands and fields along the river in Copperhill Tennessee and McCaysville Georgia. The flood waters will approach foundations of homes and businesses. The parking lot behind the Copperhill Tennessee Post Office will be under one to two feet of water. The flood waters will begin to reach portions of Ocoee Street and the bottom of the Georgia Highway 5 bridge. Large portions of the Horsebend Park and parking lot will be flooded.
10	Minor flooding expands into woodlands, fields, and backyards of homes near the river. The rock access road to the gage will be under two feet of water. Portions of parking lots near the river will begin to flood behind the Copperhill Tennessee Post Office and other businesses along Ocoee Street. Also flooding expands into the backyards of homes and the Horsebend Park in McCaysville Georgia.
8	Flood stage is reached. Minor flooding begins of woodlands, fields and backyards of homes near the river upstream and downstream from the gage off Tennessee Highway 68 or Ocoee Street in Copperhill Tennessee. The rock access road to the gage will begin to flood. Flooding begins in the backyards of homes and the Horsebend Park in McCaysville Georgia.
6	Bankfull conditions are reached along the river upstream and downstream from the gage off of Tennessee Highway 68 or Ocoee Street in west Copperhill Tennessee. This includes low lying portions of the Horsebend Park in McCaysville Georgia.

About This Location

Latitude: 34.991389° N, Longitude: 84.376667° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 8 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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other Not Available Not Available

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Excessive Rainfall Outlook Daily Tennessee Basin Lake Stages and Forecasts Water Release Schedule of TVA Dams Snow Information

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 Morristown Weather Forecast Office 5974 Commerce Blvd. Morristown, TN 37814 (423) 586-3771 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:30 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities