Skip Navigation Link  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Bookmark and Share Navigation Bar End Cap


Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at 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 for more information.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit 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.

Hydrograph River at a Glance Download
Oconee River at Lake Oconee Pool (ft)Observed: 434.92 ft at 7:00AM Nov 25, 2023Highest Observation: 434.99 ft at 7:00AM Nov 26, 2023Observed: 434.51 ft at 7:00AM Nov 27, 2023Observed: 434.9 ft at 7:00AM Nov 28, 2023Observed: 434.82 ft at 7:00AM Nov 29, 2023WDMG1(plotting HPIRZ) Graph Created (6:04AM Nov 30, 2023)ObservedLatest observed value: 434.82 ft at 7:00 AM EST 29-Nov-2023. Flood Stage is 435.5 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: Not Available
NOTE: Stage measured manually and reported by river observer. No automated gauge on-site.

NOTE: Forecasts are not available for the Oconee River at Lake Oconee. Only observed stages are available for this point.

Return to Area Map
Upstream Gauge - near Penfield Upstream Gauge Downstream Gauge Downstream Gauge - at Lake Sinclair
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 435.5
Action Stage: 435
Low Stage (in feet): 0

Historic Crests
(1) 436.00 ft on 02/05/1998
(2) 435.96 ft on 11/25/2009

(P): Preliminary values subject to further review.

Recent Crests
(1) 435.96 ft on 11/25/2009
(2) 436.00 ft on 02/05/1998

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
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.
About This Location Collapse

Latitude: 33.351667° N, Longitude: 83.161667° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 435.5 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(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 0 ft 435.5 ft  
Additional Information Collapse
Georgia Power trys to maintain a full pool level of 435.0 feet. Any reading higher than that normally causes some kind of action such as partially opening gates at the dam to release lake water and reduce the pool elevation.
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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
Peachtree City/Atlanta Weather Forecast Office
4 Falcon Drive
Peachtree City, GA 30269
(770) 486-1133
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:30 PM
Privacy Policy
About Us
Career Opportunities