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Hydrograph River at a Glance Download
Apalachicola River at Chattahoochee Stage (ft)USGS--Water Resources of the United StatesCHAF1(plotting HGIRG) Graph Created (5:36AM Apr 23, 2018)
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Tabular Data (UTC)
Tabular Data (EDT)
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Datum: Not Available
Metadata
NOTE: Forecasts are not available for the Apalachicola River at Chattahoochee. Only observed stages are available for this point.
Return to Area Map
Upstream Gauge - at Woodruff Dam (USACE) Upstream Gauge Downstream Gauge Downstream Gauge - near Blountstown
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 0
Action Stage: 56
Low Stage (in feet): 39.5

Historic Crests
(1) 76.56 ft on 03/12/1998
(2) 76.21 ft on 07/10/1994
(3) 74.04 ft on 03/21/1990
(4) 73.28 ft on 12/29/2015
(5) 70.46 ft on 04/01/2005
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 57.51 ft on 02/12/2018
(2) 62.32 ft on 01/24/2017
(3) 63.37 ft on 01/05/2017
(4) 64.45 ft on 04/03/2016
(5) 53.80 ft on 03/30/2016
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 37.83 ft on 09/06/1957
(2) 38.28 ft on 09/23/1956
(3) 38.37 ft on 10/20/1955
(4) 38.57 ft on 10/21/2016
(5) 38.76 ft on 09/28/1954
Show More Low Water Records
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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Photos
(1) Apalachicola River at Chattahoochee - KML
Low Water Impacts Collapse
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10 kcfs About half of all streams and sloughs in nontidal floodplain become impassable at 10,000 cfs, blocking access from main stem to floodplain for fish, fisherman, and hunters. Extent/reach: Floodplain streams, sloughs, and lakes along 86 river miles (mile 21-107).
11 kcfs Flow needed to provide sufficient depths at tributary mouths for fish to move between the tributaries and main channel.
13 kcfs Barges and large boats cannot navigate the river (at Blountstown gage of 6 feet or lower, which is approximately equivalent to 13,000 cfs at Chattahoochee gage). Reach: Upper 86 miles (mile 21-107), especially at problems reaches (e.g. near Corley Slough).
15 kcfs Most Tupelo-Cypress swamps in nontidal reaches of the annual floodplain are exposed and no longer inundated at 15,000 cfs. Inundation in wetland forests March-May is important habitat for the primary fish spawning season, and also maintains healthy forest structure and species composition in swamps. Extent/reach: Approx. 19,000 acres of Tupelo-Cypress swamps bordering 57 miles of river (mile 21-78).
21 kcfs Releases to the Apalachicola River approximate or exceed inflows into the basin whenever basin inflows approached 21,000 cfs or lower during the Gulf Sturgeon spawning period.
29 kcfs The extent of connected aquatic floodplain habitat increases substantially at flows above 29,000.
5.0 kcfs Minimum flow from Woodruff Dam. Swift Slough is disconnected from the main stem of the Apalachicola River
5.6 kcfs Level needed for the Swift Slough to remain minimally connected to the river. Dissolved oxygen declines to lethal levels.
6 kcfs More than 85% of all streams and sloughs in nontidal floodplain become impassable at 6,000 cfs, blocking access from main stem to floodplain for fish, fisherman, and hunters. Extent/reach: Floodplain streams, sloughs, and lakes along 86 river miles (mile 20-106). In many areas of the estuary, salinity levels increase to intolerable or lethal levels for estuarine biota (oysters, submerged aquatic vegetations, benthic invertebrates, etc). Extent/reach: Nearly 100 miles of brackish-water streams in the lower Apalachicola River and distributaries, plus approx. 110,000 acres of bays and sounds in the Apalachicola Bay system.
8 kcfs Low flow operations protocol implemented when flows approached levels less than 8,000 cfs to minimize impacts to mussel species.
9 kcfs In some areas of the estuary, salinity levels increase to intolerable or lethal levels for estuarine biota (oysters, submerged aquatic vegetations, benthic invertebrates, etc). Extent/reach: Nearly 100 miles of brackish-water streams in the lower Apalachicola River and distributaries, plus approx. 110,000 acres of bays and sounds in the Apalachicola Bay system.
About This Location Collapse

Latitude: 30.700833° N, Longitude: 84.859167° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft Not Available 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 NULL NULL  

Current/Historical Observations:
Additional Information Collapse
Auxillary Site USGS Number 02358001 has been temporarily substituted unitl main site USGS Number 02358000 primary and secondary gages have been repaired.
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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