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Hydrograph River at a Glance Download
Atchafalaya River at Myette Point/Grand Lake Stage (ft)Observed: 7.47 ft at 7:30AM Apr 14, 2014Observed: 7.48 ft at 8:00AM Apr 14, 2014Observed: 7.49 ft at 8:30AM Apr 14, 2014Observed: 7.5 ft at 9:00AM Apr 14, 2014Observed: 7.52 ft at 9:30AM Apr 14, 2014Observed: 7.53 ft at 10:00AM Apr 14, 2014Observed: 7.54 ft at 10:30AM Apr 14, 2014Observed: 7.54 ft at 11:00AM Apr 14, 2014Observed: 7.55 ft at 11:30AM Apr 14, 2014Observed: 7.56 ft at 12:00PM Apr 14, 2014Observed: 7.57 ft at 12:30PM Apr 14, 2014Observed: 7.58 ft at 1:00PM Apr 14, 2014Observed: 7.58 ft at 1:30PM Apr 14, 2014Observed: 7.59 ft at 2:00PM Apr 14, 2014Observed: 7.59 ft at 2:30PM Apr 14, 2014Observed: 7.6 ft at 3:00PM Apr 14, 2014Observed: 7.6 ft at 3:30PM Apr 14, 2014Observed: 7.61 ft at 4:00PM Apr 14, 2014Observed: 7.61 ft at 4:30PM Apr 14, 2014Observed: 7.63 ft at 5:00PM Apr 14, 2014Observed: 7.79 ft at 5:30PM Apr 14, 2014Observed: 7.79 ft at 6:00PM Apr 14, 2014Observed: 7.79 ft at 6:30PM Apr 14, 2014Observed: 7.78 ft at 7:00PM Apr 14, 2014Observed: 7.77 ft at 7:30PM Apr 14, 2014Observed: 7.76 ft at 8:00PM Apr 14, 2014Observed: 7.75 ft at 8:30PM Apr 14, 2014Observed: 7.75 ft at 9:00PM Apr 14, 2014Observed: 7.75 ft at 9:30PM Apr 14, 2014Observed: 7.75 ft at 10:00PM Apr 14, 2014Observed: 7.76 ft at 10:30PM Apr 14, 2014Observed: 7.76 ft at 11:00PM Apr 14, 2014Observed: 7.76 ft at 11:30PM Apr 14, 2014Observed: 7.76 ft at 12:00AM Apr 15, 2014Observed: 7.76 ft at 12:30AM Apr 15, 2014Observed: 7.75 ft at 1:00AM Apr 15, 2014Observed: 7.75 ft at 1:30AM Apr 15, 2014Observed: 7.74 ft at 2:00AM Apr 15, 2014Observed: 7.73 ft at 2:30AM Apr 15, 2014Observed: 7.73 ft at 3:00AM Apr 15, 2014Observed: 7.72 ft at 3:30AM Apr 15, 2014Observed: 7.72 ft at 4:00AM Apr 15, 2014Observed: 7.71 ft at 4:30AM Apr 15, 2014Observed: 7.7 ft at 5:00AM Apr 15, 2014Observed: 7.7 ft at 5:30AM Apr 15, 2014Observed: 7.69 ft at 6:00AM Apr 15, 2014Observed: 7.69 ft at 6:30AM Apr 15, 2014Observed: 7.69 ft at 7:00AM Apr 15, 2014Observed: 7.68 ft at 7:30AM Apr 15, 2014Observed: 7.68 ft at 8:00AM Apr 15, 2014Observed: 7.68 ft at 8:30AM Apr 15, 2014Observed: 7.67 ft at 9:00AM Apr 15, 2014Observed: 7.67 ft at 9:30AM Apr 15, 2014Observed: 7.67 ft at 10:00AM Apr 15, 2014Observed: 7.67 ft at 10:30AM Apr 15, 2014Observed: 7.67 ft at 11:00AM Apr 15, 2014Observed: 7.67 ft at 11:30AM Apr 15, 2014Observed: 7.67 ft at 12:00PM Apr 15, 2014Observed: 7.67 ft at 12:30PM Apr 15, 2014Observed: 7.66 ft at 1:00PM Apr 15, 2014Observed: 7.67 ft at 1:30PM Apr 15, 2014Observed: 7.67 ft at 2:00PM Apr 15, 2014Observed: 7.66 ft at 2:30PM Apr 15, 2014Observed: 7.66 ft at 3:00PM Apr 15, 2014Observed: 7.66 ft at 3:30PM Apr 15, 2014Observed: 7.66 ft at 4:00PM Apr 15, 2014Observed: 7.66 ft at 4:30PM Apr 15, 2014Observed: 7.66 ft at 5:00PM Apr 15, 2014Observed: 7.66 ft at 5:30PM Apr 15, 2014Observed: 7.66 ft at 6:00PM Apr 15, 2014Observed: 7.65 ft at 6:30PM Apr 15, 2014Observed: 7.65 ft at 7:00PM Apr 15, 2014Observed: 7.65 ft at 7:30PM Apr 15, 2014Observed: 7.65 ft at 8:00PM Apr 15, 2014Observed: 7.65 ft at 8:30PM Apr 15, 2014Observed: 7.66 ft at 9:00PM Apr 15, 2014Observed: 7.66 ft at 9:30PM Apr 15, 2014Observed: 7.66 ft at 10:00PM Apr 15, 2014Observed: 7.67 ft at 10:30PM Apr 15, 2014Observed: 7.67 ft at 11:00PM Apr 15, 2014Observed: 7.67 ft at 11:30PM Apr 15, 2014Observed: 7.67 ft at 12:00AM Apr 16, 2014Observed: 7.68 ft at 12:30AM Apr 16, 2014Observed: 7.68 ft at 1:00AM Apr 16, 2014Observed: 7.68 ft at 1:30AM Apr 16, 2014Observed: 7.69 ft at 2:00AM Apr 16, 2014Observed: 7.69 ft at 2:30AM Apr 16, 2014Observed: 7.7 ft at 3:00AM Apr 16, 2014Observed: 7.7 ft at 3:30AM Apr 16, 2014Observed: 7.7 ft at 4:00AM Apr 16, 2014Observed: 7.71 ft at 4:30AM Apr 16, 2014Observed: 7.71 ft at 5:00AM Apr 16, 2014Observed: 7.72 ft at 5:30AM Apr 16, 2014Observed: 7.72 ft at 6:00AM Apr 16, 2014Observed: 7.73 ft at 6:30AM Apr 16, 2014Observed: 7.74 ft at 7:00AM Apr 16, 2014Observed: 7.75 ft at 7:30AM Apr 16, 2014Observed: 7.76 ft at 8:00AM Apr 16, 2014Observed: 7.77 ft at 8:30AM Apr 16, 2014Observed: 7.78 ft at 9:00AM Apr 16, 2014Observed: 7.79 ft at 9:30AM Apr 16, 2014Observed: 7.81 ft at 10:00AM Apr 16, 2014Observed: 7.82 ft at 10:30AM Apr 16, 2014Observed: 7.82 ft at 11:00AM Apr 16, 2014Observed: 7.83 ft at 11:30AM Apr 16, 2014Observed: 7.84 ft at 12:00PM Apr 16, 2014Observed: 7.85 ft at 12:30PM Apr 16, 2014Observed: 7.86 ft at 1:00PM Apr 16, 2014Observed: 7.86 ft at 1:30PM Apr 16, 2014Observed: 7.87 ft at 2:00PM Apr 16, 2014Observed: 7.88 ft at 2:30PM Apr 16, 2014Observed: 7.88 ft at 3:00PM Apr 16, 2014Observed: 7.89 ft at 3:30PM Apr 16, 2014Observed: 7.89 ft at 4:00PM Apr 16, 2014Observed: 7.89 ft at 4:30PM Apr 16, 2014Observed: 7.9 ft at 5:00PM Apr 16, 2014Observed: 7.9 ft at 5:30PM Apr 16, 2014Observed: 7.91 ft at 6:00PM Apr 16, 2014Observed: 7.92 ft at 6:30PM Apr 16, 2014Observed: 7.93 ft at 7:00PM Apr 16, 2014Observed: 7.94 ft at 7:30PM Apr 16, 2014Observed: 7.95 ft at 8:00PM Apr 16, 2014Observed: 7.95 ft at 8:30PM Apr 16, 2014Observed: 7.96 ft at 9:00PM Apr 16, 2014Observed: 7.97 ft at 9:30PM Apr 16, 2014Observed: 7.98 ft at 10:00PM Apr 16, 2014Observed: 7.99 ft at 10:30PM Apr 16, 2014Observed: 8 ft at 11:00PM Apr 16, 2014Observed: 8.01 ft at 11:30PM Apr 16, 2014Observed: 8.02 ft at 12:00AM Apr 17, 2014Observed: 8.02 ft at 12:30AM Apr 17, 2014Observed: 8.03 ft at 1:00AM Apr 17, 2014Observed: 8.04 ft at 1:30AM Apr 17, 2014Observed: 8.04 ft at 2:00AM Apr 17, 2014Observed: 8.05 ft at 2:30AM Apr 17, 2014Observed: 8.05 ft at 3:00AM Apr 17, 2014Observed: 8.06 ft at 3:30AM Apr 17, 2014Observed: 8.06 ft at 4:00AM Apr 17, 2014Observed: 8.07 ft at 4:30AM Apr 17, 2014Observed: 8.07 ft at 5:00AM Apr 17, 2014Observed: 8.08 ft at 5:30AM Apr 17, 2014Observed: 8.08 ft at 6:00AM Apr 17, 2014Highest Observation: 8.09 ft at 6:30AM Apr 17, 2014Forecast: 7.9 ft 1:00PM Apr 17, 2014Forecast: 7.9 ft 7:00PM Apr 17, 2014Forecast: 8 ft 1:00AM Apr 18, 2014Forecast: 8.2 ft 7:00AM Apr 18, 2014Forecast: 8.3 ft 1:00PM Apr 18, 2014Forecast: 8.3 ft 7:00PM Apr 18, 2014Forecast: 8.3 ft 1:00AM Apr 19, 2014Forecast: 8.3 ft 7:00AM Apr 19, 2014Forecast: 8.3 ft 1:00PM Apr 19, 2014Highest Forecast: 8.4 ft 7:00PM Apr 19, 2014Forecast: 8.3 ft 1:00AM Apr 20, 2014Forecast: 8.3 ft 7:00AM Apr 20, 2014Highest Forecast: 8.4 ft 1:00PM Apr 20, 2014Forecast: 8.3 ft 7:00PM Apr 20, 2014Forecast: 8.3 ft 1:00AM Apr 21, 2014Forecast: 8.3 ft 7:00AM Apr 21, 2014USGS--Water Resources of the United StatesGNDL1(plotting HGIRG) Graph Created (7:19AM Apr 17, 2014)ObservedForecast (issued 10:26AM Apr 16)Latest observed value: 8.09 ft at 6:30 AM CDT 17-Apr-2014. Flood Stage is 15 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Forecasts for the Atchafalaya River at Myette Point/Grand Lake are issued routinely year-round.
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Upstream Gauge - at Bayou Sorrel Lock Upstream Gauge Downstream Gauge Downstream Gauge - at Morgan City
Flood Categories (in feet)
Major Flood Stage:26
Moderate Flood Stage:20
Flood Stage:15
Action Stage:14

Historical Crests
(1) 17.80 ft on 05/24/1973
(2) 15.58 ft on 05/28/2011
(3) 14.95 ft on 04/19/1975
(4) 12.97 ft on 02/18/1974
(5) 12.62 ft on 04/26/2008
Show More Historical Crests

Low Water Records
(1) -0.76 ft on 09/30/1999
(2) 0.50 ft on 10/09/2000
(3) 0.85 ft on 12/05/2008
Show More Low Water Records
Zoom Level: 16
Gauge Location
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
If you notice any errors in the below information, please contact our Webmaster
28 AT THIS STAGE, THE WEST ATCHAFALYA BASIN PROTECTION LEVEE WILL BE OVERTOPPED FLOODING PARTS OF THE CITY OF CHARENTON. RIVER NAVIGATION WILL BECOME MORE DIFFICULT AND BOATING CAUTION IS URGED.
26 THE RIVER WILL OVERTOP THE LEVEE AT ITS LOWEST POINTS. SANDBAGGING OF LOW LEVEE SECTIONS FROM CHARENTON DOWNSTREAM TO NEAR FRANKLIN IS RECOMMENDED. RIVER NAVIGATION WILL BECOME MORE DIFFICULT AND BOATING CAUTION IS URGED.
20 RIVER NAVIGATION WILL BECOME MORE DIFFICULT AND BOATING CAUTION IS URGED.
15 ALTHOUGH ON THE FLOODWAY SIDE (FWS) OF THE PROTECTION LEVEE... FLOODING OF THE BATTURE WILL IMPEDE SMALL CRAFT LAUNCHING. NAVIGATION PRECAUTIONS ARE RECOMMENDED.
About This Location Collapse

Latitude: 29.892500° N, Longitude: 91.445556° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 15 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 -1.44 ft 13.56 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 -1.28 ft 13.72 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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NWS Information
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Page last modified: 8-Apr-2014 7:37 AM
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