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Hydrograph River at a Glance Download
Chattahoochee River at George W. Andrews Lock and Dam (USACE) Tailwater (ft)Flow (kcfs)Observed: 77.32 ft at 7:00AM Oct 15, 2021Observed: 77.38 ft at 8:00AM Oct 15, 2021Observed: 77.41 ft at 9:00AM Oct 15, 2021Observed: 77.38 ft at 10:00AM Oct 15, 2021Observed: 77.35 ft at 11:00AM Oct 15, 2021Observed: 77.19 ft at 12:00PM Oct 15, 2021Observed: 76.83 ft at 1:00PM Oct 15, 2021Observed: 77.08 ft at 2:00PM Oct 15, 2021Observed: 77.01 ft at 3:00PM Oct 15, 2021Observed: 77.05 ft at 4:00PM Oct 15, 2021Observed: 76.97 ft at 5:00PM Oct 15, 2021Observed: 77.42 ft at 6:00PM Oct 15, 2021Observed: 77.64 ft at 7:00PM Oct 15, 2021Observed: 77.98 ft at 8:00PM Oct 15, 2021Observed: 78.54 ft at 9:00PM Oct 15, 2021Observed: 79.1 ft at 10:00PM Oct 15, 2021Observed: 79.54 ft at 11:00PM Oct 15, 2021Observed: 78.65 ft at 12:00AM Oct 16, 2021Observed: 77.92 ft at 1:00AM Oct 16, 2021Observed: 77.45 ft at 2:00AM Oct 16, 2021Observed: 77.14 ft at 3:00AM Oct 16, 2021Observed: 77.07 ft at 4:00AM Oct 16, 2021Observed: 76.99 ft at 5:00AM Oct 16, 2021Observed: 76.97 ft at 6:00AM Oct 16, 2021Observed: 76.97 ft at 7:00AM Oct 16, 2021Observed: 76.95 ft at 8:00AM Oct 16, 2021Observed: 76.91 ft at 9:00AM Oct 16, 2021Observed: 76.54 ft at 10:00AM Oct 16, 2021Observed: 76.96 ft at 11:00AM Oct 16, 2021Observed: 77.5 ft at 12:00PM Oct 16, 2021Observed: 77.76 ft at 1:00PM Oct 16, 2021Observed: 78.27 ft at 2:00PM Oct 16, 2021Observed: 78.66 ft at 3:00PM Oct 16, 2021Observed: 79.61 ft at 4:00PM Oct 16, 2021Observed: 80.14 ft at 5:00PM Oct 16, 2021Observed: 80.61 ft at 6:00PM Oct 16, 2021Observed: 80.87 ft at 7:00PM Oct 16, 2021Observed: 81.23 ft at 8:00PM Oct 16, 2021Observed: 81.69 ft at 9:00PM Oct 16, 2021Observed: 82.07 ft at 10:00PM Oct 16, 2021Observed: 82.47 ft at 11:00PM Oct 16, 2021Observed: 82.81 ft at 12:00AM Oct 17, 2021Observed: 82.34 ft at 1:00AM Oct 17, 2021Observed: 80.93 ft at 2:00AM Oct 17, 2021Observed: 79.8 ft at 3:00AM Oct 17, 2021Observed: 78.9 ft at 4:00AM Oct 17, 2021Observed: 78.22 ft at 5:00AM Oct 17, 2021Observed: 77.74 ft at 6:00AM Oct 17, 2021Observed: 77.38 ft at 7:00AM Oct 17, 2021Observed: 77.18 ft at 8:00AM Oct 17, 2021Observed: 77.08 ft at 9:00AM Oct 17, 2021Observed: 77.05 ft at 10:00AM Oct 17, 2021Observed: 77.03 ft at 11:00AM Oct 17, 2021Observed: 77.75 ft at 12:00PM Oct 17, 2021Observed: 77.85 ft at 1:00PM Oct 17, 2021Observed: 79.54 ft at 2:00PM Oct 17, 2021Observed: 80.39 ft at 3:00PM Oct 17, 2021Observed: 80.92 ft at 4:00PM Oct 17, 2021Observed: 81.25 ft at 5:00PM Oct 17, 2021Observed: 81.73 ft at 6:00PM Oct 17, 2021Observed: 81.99 ft at 7:00PM Oct 17, 2021Observed: 82.15 ft at 8:00PM Oct 17, 2021Observed: 82.58 ft at 9:00PM Oct 17, 2021Observed: 83.04 ft at 10:00PM Oct 17, 2021Observed: 83.5 ft at 11:00PM Oct 17, 2021Observed: 83.92 ft at 12:00AM Oct 18, 2021Highest Observation: 84.31 ft at 1:00AM Oct 18, 2021Observed: 82.94 ft at 2:00AM Oct 18, 2021Observed: 81.02 ft at 3:00AM Oct 18, 2021Observed: 79.81 ft at 4:00AM Oct 18, 2021Observed: 78.84 ft at 5:00AM Oct 18, 2021Observed: 78.16 ft at 6:00AM Oct 18, 2021Observed: 77.66 ft at 7:00AM Oct 18, 2021Observed: 77.31 ft at 8:00AM Oct 18, 2021Observed: 77.84 ft at 9:00AM Oct 18, 2021Observed: 79.71 ft at 10:00AM Oct 18, 2021Observed: 80.15 ft at 11:00AM Oct 18, 2021Observed: 79.15 ft at 12:00PM Oct 18, 2021Observed: 78.26 ft at 1:00PM Oct 18, 2021Observed: 77.66 ft at 2:00PM Oct 18, 2021Observed: 77.26 ft at 3:00PM Oct 18, 2021Observed: 77.75 ft at 4:00PM Oct 18, 2021Observed: 78.21 ft at 5:00PM Oct 18, 2021Observed: 78.51 ft at 6:00PM Oct 18, 2021Observed: 78.78 ft at 7:00PM Oct 18, 2021Observed: 79.15 ft at 8:00PM Oct 18, 2021Observed: 79.54 ft at 9:00PM Oct 18, 2021Observed: 80.03 ft at 10:00PM Oct 18, 2021Observed: 80.52 ft at 11:00PM Oct 18, 2021Observed: 81.06 ft at 12:00AM Oct 19, 2021Observed: 81.52 ft at 1:00AM Oct 19, 2021Observed: 81.13 ft at 2:00AM Oct 19, 2021Observed: 79.58 ft at 3:00AM Oct 19, 2021Observed: 78.63 ft at 4:00AM Oct 19, 2021Observed: 77.99 ft at 5:00AM Oct 19, 2021Observed: 77.55 ft at 6:00AM Oct 19, 2021Observed: 77.28 ft at 7:00AM Oct 19, 2021Observed: 77.13 ft at 8:00AM Oct 19, 2021Observed: 77.12 ft at 9:00AM Oct 19, 2021Observed: 77.21 ft at 10:00AM Oct 19, 2021Observed: 77.26 ft at 11:00AM Oct 19, 2021Observed: 77.23 ft at 12:00PM Oct 19, 2021Observed: 76.97 ft at 1:00PM Oct 19, 2021Observed: 77.21 ft at 2:00PM Oct 19, 2021Observed: 77.19 ft at 3:00PM Oct 19, 2021Observed: 77.76 ft at 4:00PM Oct 19, 2021Observed: 78.18 ft at 5:00PM Oct 19, 2021Observed: 78.69 ft at 6:00PM Oct 19, 2021Observed: 78.93 ft at 7:00PM Oct 19, 2021Observed: 79.18 ft at 8:00PM Oct 19, 2021Observed: 79.59 ft at 9:00PM Oct 19, 2021Observed: 80.06 ft at 10:00PM Oct 19, 2021Observed: 80.56 ft at 11:00PM Oct 19, 2021Observed: 81 ft at 12:00AM Oct 20, 2021Observed: 80.48 ft at 1:00AM Oct 20, 2021Observed: 79.26 ft at 2:00AM Oct 20, 2021Observed: 78.38 ft at 3:00AM Oct 20, 2021Observed: 77.78 ft at 4:00AM Oct 20, 2021Observed: 77.37 ft at 5:00AM Oct 20, 2021United States Geological SurveyCOLA1(plotting HTIRG) Graph Created (6:38AM Oct 20, 2021)ObservedLatest observed value: 77.37 ft at 5:00 AM EDT 20-Oct-2021. Flood Stage is 106 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 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 Chattahoochee River at George W. Andrews Lock and Dam (USACE) 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: 124
Moderate Flood Stage: 112
Flood Stage: 106
Action Stage: 92
Low Stage (in feet): 76.5

Historic Crests
(1) 128.28 ft on 03/18/1929
(2) 122.10 ft on 03/19/1990
(3) 121.80 ft on 12/01/1948
(4) 121.70 ft on 03/24/1943
(5) 120.67 ft on 12/27/2015
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 101.00 ft on 09/18/2020
(2) 112.00 ft on 03/07/2020
(3) 108.22 ft on 02/23/2020
(4) 106.30 ft on 02/08/2020
(5) 101.22 ft on 01/16/2020
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 75.20 ft on 07/20/1986

For more information on your flood risk go to

Zoom Level:15
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.
Flood Impacts & Photos Collapse
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130 Georgia State Highway 62 will begin to flood.
125 The railroad tracks between Columbia Alabama and the Railroad Bridge will flood.
124 The railroad at the Georgia Pacific Plant will begin to flood. Residences along the river at Columbia, Gordon, and the Confederate Naval Yard will experience significant flooding.
122 In Houston County, many structures near the river in Columbia and Gordon will have water up to 4 feet deep inside.
120 Water will impact numerous structures along the Alabama side of the river in Columbia along River Road and Gordon on Boat Landing Road. Homes not flooded in Gordon will be completely isolated by flood waters. In Jackson County, water will be several feet deep around structures on Old Dothan Road.
119.5 In Houston County, significant flood impacts occur at the Lizard Landing Camp. Access is only possible by boat at or above this level.
119 Roads near Georgia Pacific Plant will be flooded.
118 The State Docks at Columbia in Houston County will flood. There will be significant erosion along the river banks. In 1978, this resulted in caving in of the banks with some damage to walls and outbuildings. Access to the Lizard Landing Camp Clubhouse in Houston County is restricted.
117 Water will enter residences on Old Dothan Road in Jackson County.
116 In Houston County, water will begin to surround residences on River Road in Columbia and on Boat Landing Road in Gordon. Access to these areas becomes severely restricted at this level.
115 In Houston County, campsites and the fish shack at Lizard Landing Camp begin to flood.
114 Water will reach the top of the lock walls and the Columbia Lock and Dam will be evacuated. In Jackson County, water will begin to surround structures on Old Dothan Road south of Parramore Road.
112 In Houston County, water will begin to flood River Road in Columbia and Jowers and Boat Landing Road in Gordon.
108 Low lying areas begin to flood along Omussee Creek in Houston County from Lizard Landing Camp to the Chattahoochee River.
106 In Early County, access to private residences will be restricted at the Confederate Naval Landing. Water will be up to 3 feet deep in some areas. In Houston County, the boat dock at Lizard Landing Camp begins to flood.
101 Boat ramps at the Confederate Naval Landing will begin to flood.
(1) Chattahoochee River at Andrews L&D - KML
Low Water Impacts Collapse
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1150 cfs Minimum flow required for discharge of treated effluent into the river to assimilate waste and ensure that water quality criteria will be met.
2000 cfs Minimum flow to meet the assimilative capacity needs for Georgia Pacific and Farley Nuclear Plant
800 cfs The Georgia Power Projects above Columbus are required in their Federal Energy Regulatory Commission (FERC) licenses to provide 1,850 cfs weekly average, 1,350 cfs daily average, and 800 cfs instantaneous minimum flow at Columbus.
About This Location Collapse

Latitude: 31.259167° N, Longitude: 85.110278° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 106 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 0 ft 113 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:

Additional Information Collapse
25 Jan 2009 - Temporary outage at USGS gage has been corrected. Display of daily tailwater staff gage readings has been replaced by hourly USGS tailwater readings. 15 Nov 2007 - USGS Address Corrected to 02343801 and now works.
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Hydrologic Resources Additional Resources
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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
Tallahassee Weather Forecast Office
Love Building FL State University
Tallahassee, FL 32306-4509
(850) 942-8833
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Page last modified: 2-Nov-2020 7:30 PM
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