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Hydrograph River at a Glance Download
Coosa River at Plant Hammond Pool (ft)Flow (kcfs)Highest Observation: 564.1 ft at 7:00AM Jul 31, 2020Observed: 564 ft at 7:00AM Aug 03, 2020HMMG1(plotting HPIRZ) Graph Created (5:33AM Aug 4, 2020)ObservedLatest observed value: 564 ft at 7:00 AM EDT 3-Aug-2020. Flood Stage is 570 ft
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Tabular Data (EDT)
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Datum: Not Available
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NOTE: Automated gauge readings are unavailable, readings taken manually.

NOTE: Gauge readings can be affected by backwater from downstream lake.

NOTE: Forecasts are not available for the Coosa River at Plant Hammond. Only observed stages are available for this point.

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Upstream Gauge - at Rome Mayo Bar Lock and Dam Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 579
Moderate Flood Stage: 575
Flood Stage: 570
Action Stage: 568
Low Stage (in feet): 0

Historic Crests
(1) 589.80 ft on 04/01/1886
(2) 583.20 ft on 01/22/1947
(3) 583.10 ft on 12/30/1932
(4) 582.90 ft on 04/08/1936
(5) 582.80 ft on 02/12/1946
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 573.40 ft on 04/15/2020
(2) 574.00 ft on 03/26/2020
(3) 573.20 ft on 03/07/2020
(4) 576.80 ft on 02/14/2020
(5) 570.20 ft on 12/24/2019
Show More 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.
Zoom Level:14
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Gauge LocationGauge Map Marker
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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
If you notice any errors in the below information, please contact our Webmaster
589 Near record flooding occurs upstream and downstream from Plant Hammond. Most of the access road behind the plant will be flooded up to 16 feet deep in some locations. Flood waters associcated with Cabin Creek will completely surround the Plant Hammond property. The water will be 10 feet deep in the power supply building for intakes to a pulp mill plant just upstream. Cabin Creek between the two plants and Beech Creek southeast of the mill will be flooded and cutting off access to the local roads.
587 Widespread and major inundation flooding occurs upstream and downstream from Plant Hammond. Most of the access road behind the plant will be flooded up to 14 feet deep in some locations. Flood waters associcated with Cabin Creek will surround the Plant Hammond property. The water will be 8 feet deep in the power supply building for intakes to a pulp mill plant just upstream. Cabin Creek between the two plants and Beech Creek southeast of the mill will be flooded and likely affecting access to local roads.
585 Widespread and major inundation flooding occurs upstream and downstream from Plant Hammond. Most of the access road behind the plant will be flooded up to 12 feet deep in some locations. Flood waters associcated with Cabin Creek will surround the Plant Hammond property. The water will be 6 feet deep in the power supply building for intakes to a pulp mill plant just upstream. Cabin Creek between the two plants and Beech Creek southeast of the mill will be flooded and potentially affecting the local roads.
583 Major flooding expands with widespread inundation flooding upstream and downstream from the gage behind Plant Hammond. Most of the access road behind the plant will be flooded up to 10 feet deep in some locations. The flood waters will be 4 feet deep in the power supply building for intakes to a pulp mill plant around one half mile upstream from the gage. Cabin Creek between the two plants and Beech Creek southeast of the pulp mill plant will be flooded.
581 Major flooding continues with widespread inundation flooding upstream and downstream from the gage behind Plant Hammond. Most of the access road behind the plant will be flooded up to 8 feet deep in some locations. The flood waters will be two feet deep in the power supply building for intakes to a pulp mill plant around one half mile upstream from the gage. Cabin Creek between the two plants and Beech Creek southeast of the pulp mill plant will be backed up and flooded.
579 Major flooding begins upstream and downstream from the gage behind Plant Hammond. The access road near the intakes behind the plant will be under 6 feet of water. The boat ramp near the intakes and a small portion of an access road near and under the Georgia Highway 100 bridge will be under 9 feet of water. The flood waters will reach the foundation of a power supply building for intakes to a pulp mill plant just upstream from the gage. Cabin Creek between the two plants will begin to back up and flood.
577 Significant flooding continues in the woodlands and fields along the river upstream and downstream from the gage behind Plant Hammond. The access road near the intakes behind the plant will be under 4 feet of water. The boat ramp near the intakes and a small portion of an access road near and under the Georgia Highway 100 bridge will be under 7 feet of water. The water level will approach the foundation of a power supply building for intakes to a pulp mill plant around one half mile upstream from the gage.
575 Moderate flooding begins. Significant flooding occurs in the woodlands...fields and pasture along the river upstream and downstream from the gage behind Plant Hammond. The access road near the intakes behind the plant will be under two feet of water. The boat ramp near the intakes and a small portion of an access road near and under the Georgia Highway 100 bridge will be under 5 feet of water.
573 Minor flooding continues to expand further into the woodlands...fields and pasture along the river upstream and downstream from the gage behind Plant Hammond. The access road near the intakes behind the plant begins to flood. The boat ramp near the intakes and a small portion of an access road near and under the Georgia Highway 100 bridge will be under 3 feet of water.
572 Minor flooding continues in the woodlands...fields and pastures along the river upstream and downstream from the gage behind Plant Hammond. The water reaches a low lying portion of a parking lot near the intakes behind the plant. The boat ramp near the intakes and a small portion of an access road near and under the Georgia Highway 100 bridge will be under two feet of water.
570 Flood stage is reached. Minor flooding begins of woodlands...fields and pasture along the river upstream and downstream from the gage behind Plant Hammond. A boat ramp near the intakes of the plant will be under water. A small portion of an access road near and under the Georgia Highway 100 bridge will begin to flood.
568 Bankfull conditions are reached upstream and downstream along the river from the gage behind Plant Hammond.
About This Location Collapse

Latitude: 34.249722° N, Longitude: 85.344722° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 570 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  
Additional Information Collapse
Staff gage is located by the intakes building behind Plant Hammond operated by Georgia Power.
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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
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