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Hydrograph River at a Glance Download
Atchafalaya River at Morgan City Stage (ft)Observed: 2.67 ft at 3:00PM Dec 17, 2014Observed: 2.72 ft at 4:00PM Dec 17, 2014Observed: 2.69 ft at 5:00PM Dec 17, 2014Observed: 2.67 ft at 6:00PM Dec 17, 2014Observed: 2.72 ft at 7:00PM Dec 17, 2014Observed: 2.75 ft at 8:00PM Dec 17, 2014Observed: 2.73 ft at 9:00PM Dec 17, 2014Observed: 2.68 ft at 10:00PM Dec 17, 2014Observed: 2.73 ft at 11:00PM Dec 17, 2014Observed: 2.78 ft at 12:00AM Dec 18, 2014Observed: 2.82 ft at 1:00AM Dec 18, 2014Observed: 2.82 ft at 2:00AM Dec 18, 2014Observed: 2.76 ft at 3:00AM Dec 18, 2014Observed: 2.69 ft at 4:00AM Dec 18, 2014Observed: 2.6 ft at 5:00AM Dec 18, 2014Observed: 2.52 ft at 6:00AM Dec 18, 2014Observed: 2.47 ft at 7:00AM Dec 18, 2014Observed: 2.4 ft at 8:00AM Dec 18, 2014Observed: 2.34 ft at 9:00AM Dec 18, 2014Observed: 2.34 ft at 10:00AM Dec 18, 2014Observed: 2.37 ft at 11:00AM Dec 18, 2014Observed: 2.43 ft at 12:00PM Dec 18, 2014Observed: 2.55 ft at 1:00PM Dec 18, 2014Observed: 2.71 ft at 2:00PM Dec 18, 2014Observed: 2.83 ft at 3:00PM Dec 18, 2014Observed: 2.9 ft at 4:00PM Dec 18, 2014Observed: 2.89 ft at 5:00PM Dec 18, 2014Observed: 2.85 ft at 6:00PM Dec 18, 2014Observed: 2.8 ft at 7:00PM Dec 18, 2014Observed: 2.78 ft at 8:00PM Dec 18, 2014Observed: 2.86 ft at 9:00PM Dec 18, 2014Observed: 2.83 ft at 10:00PM Dec 18, 2014Observed: 2.85 ft at 11:00PM Dec 18, 2014Observed: 2.8 ft at 12:00AM Dec 19, 2014Observed: 2.8 ft at 1:00AM Dec 19, 2014Observed: 2.8 ft at 2:00AM Dec 19, 2014Observed: 2.74 ft at 3:00AM Dec 19, 2014Observed: 2.66 ft at 4:00AM Dec 19, 2014Observed: 2.57 ft at 5:00AM Dec 19, 2014Observed: 2.52 ft at 6:00AM Dec 19, 2014Observed: 2.51 ft at 7:00AM Dec 19, 2014Observed: 2.44 ft at 8:00AM Dec 19, 2014Observed: 2.4 ft at 9:00AM Dec 19, 2014Observed: 2.36 ft at 10:00AM Dec 19, 2014Observed: 2.32 ft at 11:00AM Dec 19, 2014Observed: 2.3 ft at 12:00PM Dec 19, 2014Observed: 2.31 ft at 1:00PM Dec 19, 2014Observed: 2.27 ft at 2:00PM Dec 19, 2014Observed: 2.35 ft at 3:00PM Dec 19, 2014Observed: 2.52 ft at 4:00PM Dec 19, 2014Observed: 2.88 ft at 5:00PM Dec 19, 2014Highest Observation: 3.13 ft at 6:00PM Dec 19, 2014Observed: 3.1 ft at 7:00PM Dec 19, 2014Observed: 3.05 ft at 8:00PM Dec 19, 2014Observed: 2.9 ft at 9:00PM Dec 19, 2014Observed: 2.82 ft at 10:00PM Dec 19, 2014Observed: 2.75 ft at 11:00PM Dec 19, 2014Observed: 2.69 ft at 12:00AM Dec 20, 2014Observed: 2.66 ft at 1:00AM Dec 20, 2014Observed: 2.65 ft at 2:00AM Dec 20, 2014Observed: 2.71 ft at 3:00AM Dec 20, 2014Observed: 2.67 ft at 4:00AM Dec 20, 2014Observed: 2.61 ft at 5:00AM Dec 20, 2014Observed: 2.56 ft at 6:00AM Dec 20, 2014Observed: 2.5 ft at 7:00AM Dec 20, 2014Observed: 2.49 ft at 8:00AM Dec 20, 2014Observed: 2.4 ft at 9:00AM Dec 20, 2014Observed: 2.32 ft at 10:00AM Dec 20, 2014Observed: 2.3 ft at 11:00AM Dec 20, 2014Observed: 2.29 ft at 12:00PM Dec 20, 2014Observed: 2.28 ft at 1:00PM Dec 20, 2014Forecast: 2.5 ft 6:00PM Dec 20, 2014Forecast: 2.5 ft 12:00AM Dec 21, 2014Forecast: 2.6 ft 6:00AM Dec 21, 2014Highest Forecast: 2.7 ft 12:00PM Dec 21, 2014Highest Forecast: 2.7 ft 6:00PM Dec 21, 2014Highest Forecast: 2.7 ft 12:00AM Dec 22, 2014Highest Forecast: 2.7 ft 6:00AM Dec 22, 2014Highest Forecast: 2.7 ft 12:00PM Dec 22, 2014Highest Forecast: 2.7 ft 6:00PM Dec 22, 2014Forecast: 2.6 ft 12:00AM Dec 23, 2014Forecast: 2.6 ft 6:00AM Dec 23, 2014Forecast: 2.6 ft 12:00PM Dec 23, 2014Forecast: 2.5 ft 6:00PM Dec 23, 2014Forecast: 2.5 ft 12:00AM Dec 24, 2014Forecast: 2.5 ft 6:00AM Dec 24, 2014Forecast: 2.4 ft 12:00PM Dec 24, 2014Forecast: 2.4 ft 6:00PM Dec 24, 2014Forecast: 2.4 ft 12:00AM Dec 25, 2014Forecast: 2.3 ft 6:00AM Dec 25, 2014MCGL1(plotting HGIRG) Graph Created (2:05PM Dec 20, 2014)ObservedForecast (issued 9:54AM Dec 20)Latest observed value: 2.28 ft at 1:00 PM CST 20-Dec-2014. Flood Stage is 6 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CST)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Gauge reading affected by ocean tides.

NOTE: Forecasts for the Atchafalaya River at Morgan City are issued routinely year-round.

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Upstream Gauge - at Myette Point/Grand Lake Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 12
Moderate Flood Stage: 7
Flood Stage: 6
Action Stage: 4
Low Stage (in feet): 0

Historic Crests
(1) 10.53 ft on 05/28/1973
(2) 10.35 ft on 05/29/2011
(3) 8.46 ft on 06/27/1957
(4) 8.06 ft on 04/05/1997
(5) 7.95 ft on 04/18/1975
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 1.97 ft on 10/10/2013
(2) 6.10 ft on 05/22/2013
(3) 5.33 ft on 02/19/2012
(4) 10.35 ft on 05/29/2011
(5) 6.47 ft on 05/10/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -5.40 ft on 08/25/1926
(2) -2.70 ft on 12/21/1924
(3) -2.32 ft on 10/18/1948
Show More Low Water Records
Zoom Level:16
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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.
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If you notice any errors in the below information, please contact our Webmaster
20 There is a catastrophic flood threat. Evacuation of the cities of Berwick and Morgan City is strongly recommended. Flood walls protect the cities to an elevation of 21 feet.
12 There is a major flood threat. Back water flooding of Bayou Bouef will cause damage east of Morgan City to the community of Amelia. Structures on the river side of protection walls in Morgan City and Berwick will be under water. River traffic restrictions will be strictly enforced.
9 Structures on the river side of protection walls in Morgan City and Berwick will be under water. River traffic restrictions will be strictly enforced.
7 Buildings at the foot of Ann Street on the river side of the flood wall will flood as water overtops the Rio Oil Company dock. Buildings on the river side of the Berwick floodwall will flood. River traffic restrictions will be strictly enforced.
6 Flood stage. The city dock will be under water. Water will cover the lower end of Belleview Front Street in Berwick. Vessel traffic will be affected by stronger river current and vessel traffic safety rules will be strictly enforced by the U.S. Coast Guard.
5 Floodwall gates will be closed to protect against higher stages. Vessel traffic will be affected by stronger river current and vessel traffic safety rules will be strictly enforced by the U.S. Coast Guard.
4 Action stage. Water will move up the bank and across access roads below the city dock. Floodwall gates should be closed by the 5 foot stage to protect against higher stages. Vessel traffic will be affected by stronger river current and vessel traffic safety rules will be strictly enforced by the U.S. Coast Guard.
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Latitude: 29.696389° N, Longitude: 91.210833° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 6 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 -1.12 ft 4.88 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 0 ft 6 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:

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Page last modified: 20-Nov-2014 2:54 AM
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