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Weather Forecast Office Peachtree City/Atlanta, GA

Southeast River Forecast Center

Hydrograph

River at a Glance

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Printable Image About this graph Tabular Data (UTC) Tabular Data (EST) Datum: NGVD29 Metadata

NOTE: Automated gauge readings are now available, courtesy of the USGS. NOTE: Forecasts are not available for the Swift Creek at Rock Chapel Road near Lithonia. Only observed stages are available for this point.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Flood Categories (in feet) Major Flood Stage: 19 Moderate Flood Stage: 14 Flood Stage: 9 Action Stage: 7 Low Stage (in feet): -9999 Historic Crests (P): Preliminary values subject to further review. Recent Crests (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

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21	Major flooding continues with widespread inundation of the woodlands and grassy areas along the creek upstream and downstream from the gage behind a DeKalb County Pump Station off Rock Chapel Road. Flood waters will be up to 14 feet deep in the grassy areas. The water level will be around 7 feet above the center manhole cover of a sanitary sewer. The flood waters will begin to enter the pump station building and be around two feet deep over the paved area.
20	Major flooding occurs with widespread inundation of the woodlands and grassy areas along the creek upstream and downstream from the gage behind a DeKalb County Pump Station off Rock Chapel Road. Flood waters will be up to 13 feet deep in the grassy areas. The water level will be around 6 feet above the center manhole cover of a sanitary sewer and be reaching the foundation of the pump station. The flood waters will be around one foot deep over the paved area around building.
19	Major flooding begins. Widespread inundation occurs of the woodlands and grassy areas along the creek upstream and downstream from the gage behind a DeKalb County Pump Station off Rock Chapel Road. Flood waters will be up to 12 feet deep in the grassy areas. The water level will be around 5 feet above the center manhole cover of a sanitary sewer. The lowest portion of the paved area around the pump station will begin to flood.
18	Significant flooding continues to expand into the woodlands and grassy areas along the creek upstream and downstream from the gage behind a DeKalb County Pump Station off Rock Chapel Road. Flood waters will be up to 11 feet deep in the grassy areas. The water level will be around 4 feet above the center manhole cover of a sanitary sewer. The lowest portion of the paved area around the pump station will begin to flood.
17	Significant flooding continues to expand into the woodlands and grassy areas along the creek upstream and downstream from the gage behind a DeKalb County Pump Station off Rock Chapel Road. Flood waters will be up to 10 feet deep in the grassy areas. The water level will be around 3 feet above the center manhole cover of a sanitary sewer.
15	Significant flooding continues in the woodlands and grassy areas along the creek upstream and downstream from the gage behind a DeKalb County Pump Station off Rock Chapel Road. Flood waters will be from 7 to 8 feet deep in the grassy areas. The water level will be around one foot above the center manhole cover of a sanitary sewer.
14	Moderate flooding begins. Significant flooding occurs in the woodlands and grassy areas along the creek upstream and downstream from the gage behind a DeKalb County Pump Station off Rock Chapel Road. Flood waters will be from 6 to 7 feet deep in the grassy areas. The water level will reach the top of the center manhole cover of a sanitary sewer.
13	Minor flooding continues to expand further into woodlands and grassy areas along the creek upstream and downstream from the stream gage behind a DeKalb County Pump Station off Rock Chapel Road. Flood waters will be from 5 to 6 feet deep in the grassy areas.
11	Minor flooding continues in the woodlands and grassy areas along the creek upstream and downstream from the stream gage behind a DeKalb County Pump Station off Rock Chapel Road. Flood waters will be from 3 to 4 feet deep in the grassy areas.
9	Flood stage is reached. Minor flooding occurs in the woodlands and grassy areas along the creek upstream and downstream from the stream gage behind a DeKalb County Pump Station off Rock Chapel Road. Flood waters will be from 1 to 2 feet deep in the grassy areas.
7	Bankfull conditions are reached upstream and downstream from the stream gage behind a DeKalb County Pump Station off Rock Chapel Road. Water begins to flow into low portions of the woodlands along the creek.

About This Location

Latitude: 33.748861° N, Longitude: 84.008442° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 9 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 29 749.4 ft 758.4 ft Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other Not Available Not Available   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Rock Chapel Road near Lithonia

Resources

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