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Hydrograph River at a Glance Download
Chattahoochee River at George W. Andrews L&D (USACE) Tailwater (ft)Flow (kcfs)Observed: 77.76 ft at 4:00PM Sep 25, 2014Observed: 78.65 ft at 5:00PM Sep 25, 2014Observed: 81.09 ft at 6:00PM Sep 25, 2014Observed: 83.02 ft at 7:00PM Sep 25, 2014Observed: 83.03 ft at 8:00PM Sep 25, 2014Observed: 82.82 ft at 9:00PM Sep 25, 2014Observed: 80.73 ft at 10:00PM Sep 25, 2014Observed: 79.03 ft at 11:00PM Sep 25, 2014Observed: 78.08 ft at 12:00AM Sep 26, 2014Observed: 77.4 ft at 1:00AM Sep 26, 2014Observed: 76.97 ft at 2:00AM Sep 26, 2014Observed: 76.69 ft at 3:00AM Sep 26, 2014Observed: 76.55 ft at 4:00AM Sep 26, 2014Observed: 76.56 ft at 5:00AM Sep 26, 2014Observed: 76.7 ft at 6:00AM Sep 26, 2014Observed: 76.81 ft at 7:00AM Sep 26, 2014Observed: 76.84 ft at 8:00AM Sep 26, 2014Observed: 76.85 ft at 9:00AM Sep 26, 2014Observed: 77.08 ft at 10:00AM Sep 26, 2014Observed: 76.89 ft at 11:00AM Sep 26, 2014Observed: 76.79 ft at 12:00PM Sep 26, 2014Observed: 76.75 ft at 1:00PM Sep 26, 2014Observed: 76.77 ft at 2:00PM Sep 26, 2014Observed: 76.72 ft at 3:00PM Sep 26, 2014Observed: 76.69 ft at 4:00PM Sep 26, 2014Observed: 76.97 ft at 5:00PM Sep 26, 2014Observed: 79.14 ft at 6:00PM Sep 26, 2014Observed: 81.77 ft at 7:00PM Sep 26, 2014Highest Observation: 84.01 ft at 8:00PM Sep 26, 2014Observed: 82.9 ft at 9:00PM Sep 26, 2014Observed: 81.64 ft at 10:00PM Sep 26, 2014Observed: 80.41 ft at 11:00PM Sep 26, 2014Observed: 79.02 ft at 12:00AM Sep 27, 2014Observed: 78.23 ft at 1:00AM Sep 27, 2014Observed: 77.43 ft at 2:00AM Sep 27, 2014Observed: 77.02 ft at 3:00AM Sep 27, 2014Observed: 76.7 ft at 4:00AM Sep 27, 2014Observed: 76.57 ft at 5:00AM Sep 27, 2014Observed: 76.62 ft at 6:00AM Sep 27, 2014Observed: 76.76 ft at 7:00AM Sep 27, 2014Observed: 76.98 ft at 8:00AM Sep 27, 2014Observed: 77.06 ft at 9:00AM Sep 27, 2014Observed: 77.07 ft at 10:00AM Sep 27, 2014Observed: 77.02 ft at 11:00AM Sep 27, 2014Observed: 76.91 ft at 12:00PM Sep 27, 2014Observed: 76.82 ft at 1:00PM Sep 27, 2014Observed: 76.76 ft at 2:00PM Sep 27, 2014Observed: 76.74 ft at 3:00PM Sep 27, 2014Observed: 76.73 ft at 4:00PM Sep 27, 2014Observed: 76.78 ft at 5:00PM Sep 27, 2014Observed: 76.77 ft at 6:00PM Sep 27, 2014Observed: 76.76 ft at 7:00PM Sep 27, 2014Observed: 76.81 ft at 8:00PM Sep 27, 2014Observed: 76.75 ft at 9:00PM Sep 27, 2014Observed: 76.81 ft at 10:00PM Sep 27, 2014Observed: 78.05 ft at 11:00PM Sep 27, 2014Observed: 80.8 ft at 12:00AM Sep 28, 2014Observed: 82.81 ft at 1:00AM Sep 28, 2014Observed: 83.25 ft at 2:00AM Sep 28, 2014Observed: 80.81 ft at 3:00AM Sep 28, 2014Observed: 78.94 ft at 4:00AM Sep 28, 2014Observed: 78.01 ft at 5:00AM Sep 28, 2014Observed: 77.33 ft at 6:00AM Sep 28, 2014Observed: 76.86 ft at 7:00AM Sep 28, 2014Observed: 76.58 ft at 8:00AM Sep 28, 2014Observed: 76.49 ft at 9:00AM Sep 28, 2014Observed: 76.43 ft at 10:00AM Sep 28, 2014Observed: 76.61 ft at 11:00AM Sep 28, 2014Observed: 76.86 ft at 12:00PM Sep 28, 2014Observed: 76.95 ft at 1:00PM Sep 28, 2014Observed: 76.92 ft at 2:00PM Sep 28, 2014Observed: 76.85 ft at 3:00PM Sep 28, 2014Observed: 76.74 ft at 4:00PM Sep 28, 2014Observed: 76.65 ft at 5:00PM Sep 28, 2014Observed: 76.58 ft at 6:00PM Sep 28, 2014Observed: 76.57 ft at 7:00PM Sep 28, 2014Observed: 76.64 ft at 8:00PM Sep 28, 2014Observed: 76.64 ft at 9:00PM Sep 28, 2014Observed: 77.15 ft at 10:00PM Sep 28, 2014Observed: 79.01 ft at 11:00PM Sep 28, 2014Observed: 81.45 ft at 12:00AM Sep 29, 2014Observed: 83.52 ft at 1:00AM Sep 29, 2014Observed: 81.31 ft at 2:00AM Sep 29, 2014Observed: 79.28 ft at 3:00AM Sep 29, 2014Observed: 78.3 ft at 4:00AM Sep 29, 2014Observed: 77.58 ft at 5:00AM Sep 29, 2014Observed: 77.07 ft at 6:00AM Sep 29, 2014Observed: 77.19 ft at 7:00AM Sep 29, 2014Observed: 77.13 ft at 8:00AM Sep 29, 2014Observed: 77.11 ft at 9:00AM Sep 29, 2014Observed: 77.03 ft at 10:00AM Sep 29, 2014Observed: 77.06 ft at 11:00AM Sep 29, 2014Observed: 77.03 ft at 12:00PM Sep 29, 2014Observed: 77 ft at 1:00PM Sep 29, 2014Observed: 76.71 ft at 2:00PM Sep 29, 2014Observed: 76.65 ft at 3:00PM Sep 29, 2014Observed: 76.6 ft at 4:00PM Sep 29, 2014Observed: 76.72 ft at 5:00PM Sep 29, 2014Observed: 77.34 ft at 6:00PM Sep 29, 2014Observed: 78.66 ft at 7:00PM Sep 29, 2014Observed: 79.25 ft at 8:00PM Sep 29, 2014Observed: 80.08 ft at 9:00PM Sep 29, 2014Observed: 80.51 ft at 10:00PM Sep 29, 2014Observed: 80.57 ft at 11:00PM Sep 29, 2014Observed: 79.22 ft at 12:00AM Sep 30, 2014Observed: 78.04 ft at 1:00AM Sep 30, 2014Observed: 77.35 ft at 2:00AM Sep 30, 2014Observed: 76.92 ft at 3:00AM Sep 30, 2014Observed: 76.66 ft at 4:00AM Sep 30, 2014Observed: 76.55 ft at 5:00AM Sep 30, 2014Observed: 76.59 ft at 6:00AM Sep 30, 2014Observed: 76.75 ft at 7:00AM Sep 30, 2014Observed: 76.9 ft at 8:00AM Sep 30, 2014Observed: 76.95 ft at 9:00AM Sep 30, 2014Observed: 76.95 ft at 10:00AM Sep 30, 2014Observed: 76.87 ft at 11:00AM Sep 30, 2014Observed: 76.9 ft at 12:00PM Sep 30, 2014Observed: 76.87 ft at 1:00PM Sep 30, 2014Observed: 76.84 ft at 2:00PM Sep 30, 2014United States Geological SurveyCOLA1(plotting HTIRG) Graph Created (3:49PM Sep 30, 2014)ObservedLatest observed value: 76.84 ft at 2:00 PM EDT 30-Sep-2014. 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
Metadata
Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions

NOTE: Forecasts for the Chattahoochee River at George W. Andrews L&D (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

Historical Crests
(1) 128.28 ft on 03/18/1929
(2) 122.10 ft on 03/19/1990
(3) 121.80 ft on 12/03/1948
(4) 121.80 ft on 12/01/1948
(5) 121.70 ft on 03/24/1943
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(P): Preliminary values subject to further review.

Low Water Records
(1) 75.20 ft on 07/20/1986
Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
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 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 Water will be 3 to 4 feet deep around the homes at columbia and gordon.
119 Roads near georgia pacific plant will be flooded.
118 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.
114 At this level, water will reach the top of the lock walls and the columbia lock and dam will be evacuated.
112 Water will begin to flood primary road access to homes in gordon.
106 Access to private residences will be restricted at the confederate naval landing. Water will be up to 3 feet deep in some areas.
101 Boat ramps at the confederate naval landing will begin to flood.
Photos
(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)
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 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.
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
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Page last modified: 5-Aug-2014 6:39 PM
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