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Hydrograph River at a Glance Download
Atchafalaya River at Myette Point/Grand Lake Stage (ft)Observed: 5.14 ft at 10:30AM Jul 28, 2014Observed: 5.14 ft at 11:00AM Jul 28, 2014Observed: 5.14 ft at 11:30AM Jul 28, 2014Highest Observation: 5.15 ft at 12:00PM Jul 28, 2014Observed: 5.14 ft at 12:30PM Jul 28, 2014Observed: 5.14 ft at 1:00PM Jul 28, 2014Observed: 5.14 ft at 1:30PM Jul 28, 2014Observed: 5.14 ft at 2:00PM Jul 28, 2014Observed: 5.13 ft at 2:30PM Jul 28, 2014Observed: 5.13 ft at 3:00PM Jul 28, 2014Observed: 5.13 ft at 3:30PM Jul 28, 2014Observed: 5.12 ft at 4:00PM Jul 28, 2014Observed: 5.12 ft at 4:30PM Jul 28, 2014Observed: 5.12 ft at 5:00PM Jul 28, 2014Observed: 5.12 ft at 5:30PM Jul 28, 2014Observed: 5.11 ft at 6:00PM Jul 28, 2014Observed: 5.11 ft at 6:30PM Jul 28, 2014Observed: 5.1 ft at 7:00PM Jul 28, 2014Observed: 5.1 ft at 7:30PM Jul 28, 2014Observed: 5.1 ft at 8:00PM Jul 28, 2014Observed: 5.1 ft at 8:30PM Jul 28, 2014Observed: 5.1 ft at 9:00PM Jul 28, 2014Observed: 5.1 ft at 9:30PM Jul 28, 2014Observed: 5.09 ft at 10:00PM Jul 28, 2014Observed: 5.08 ft at 10:30PM Jul 28, 2014Observed: 5.08 ft at 11:00PM Jul 28, 2014Observed: 5.07 ft at 11:30PM Jul 28, 2014Observed: 5.06 ft at 12:00AM Jul 29, 2014Observed: 5.05 ft at 12:30AM Jul 29, 2014Observed: 5.05 ft at 1:00AM Jul 29, 2014Observed: 5.04 ft at 1:30AM Jul 29, 2014Observed: 5.03 ft at 2:00AM Jul 29, 2014Observed: 5.02 ft at 2:30AM Jul 29, 2014Observed: 5.01 ft at 3:00AM Jul 29, 2014Observed: 4.99 ft at 3:30AM Jul 29, 2014Observed: 4.98 ft at 4:00AM Jul 29, 2014Observed: 4.97 ft at 4:30AM Jul 29, 2014Observed: 4.96 ft at 5:00AM Jul 29, 2014Observed: 4.95 ft at 5:30AM Jul 29, 2014Observed: 4.94 ft at 6:00AM Jul 29, 2014Observed: 4.93 ft at 6:30AM Jul 29, 2014Observed: 4.92 ft at 7:00AM Jul 29, 2014Observed: 4.92 ft at 7:30AM Jul 29, 2014Observed: 4.92 ft at 8:00AM Jul 29, 2014Observed: 4.92 ft at 8:30AM Jul 29, 2014Observed: 4.93 ft at 9:00AM Jul 29, 2014Observed: 4.93 ft at 9:30AM Jul 29, 2014Observed: 4.93 ft at 10:00AM Jul 29, 2014Observed: 4.93 ft at 10:30AM Jul 29, 2014Observed: 4.93 ft at 11:00AM Jul 29, 2014Observed: 4.92 ft at 11:30AM Jul 29, 2014Observed: 4.92 ft at 12:00PM Jul 29, 2014Observed: 4.91 ft at 12:30PM Jul 29, 2014Observed: 4.91 ft at 1:00PM Jul 29, 2014Observed: 4.9 ft at 1:30PM Jul 29, 2014Observed: 4.9 ft at 2:00PM Jul 29, 2014Observed: 4.89 ft at 2:30PM Jul 29, 2014Observed: 4.89 ft at 3:00PM Jul 29, 2014Observed: 4.88 ft at 3:30PM Jul 29, 2014Observed: 4.87 ft at 4:00PM Jul 29, 2014Observed: 4.87 ft at 4:30PM Jul 29, 2014Observed: 4.87 ft at 5:00PM Jul 29, 2014Observed: 4.87 ft at 5:30PM Jul 29, 2014Observed: 4.87 ft at 6:00PM Jul 29, 2014Observed: 4.87 ft at 6:30PM Jul 29, 2014Observed: 4.86 ft at 7:00PM Jul 29, 2014Observed: 4.86 ft at 7:30PM Jul 29, 2014Observed: 4.85 ft at 8:00PM Jul 29, 2014Observed: 4.85 ft at 8:30PM Jul 29, 2014Observed: 4.84 ft at 9:00PM Jul 29, 2014Observed: 4.83 ft at 9:30PM Jul 29, 2014Observed: 4.82 ft at 10:00PM Jul 29, 2014Observed: 4.81 ft at 10:30PM Jul 29, 2014Observed: 4.8 ft at 11:00PM Jul 29, 2014Observed: 4.79 ft at 11:30PM Jul 29, 2014Observed: 4.77 ft at 12:00AM Jul 30, 2014Observed: 4.76 ft at 12:30AM Jul 30, 2014Observed: 4.74 ft at 1:00AM Jul 30, 2014Observed: 4.73 ft at 1:30AM Jul 30, 2014Observed: 4.71 ft at 2:00AM Jul 30, 2014Observed: 4.69 ft at 2:30AM Jul 30, 2014Observed: 4.66 ft at 3:00AM Jul 30, 2014Observed: 4.64 ft at 3:30AM Jul 30, 2014Observed: 4.62 ft at 4:00AM Jul 30, 2014Observed: 4.6 ft at 4:30AM Jul 30, 2014Observed: 4.58 ft at 5:00AM Jul 30, 2014Observed: 4.57 ft at 5:30AM Jul 30, 2014Observed: 4.56 ft at 6:00AM Jul 30, 2014Observed: 4.55 ft at 6:30AM Jul 30, 2014Observed: 4.54 ft at 7:00AM Jul 30, 2014Observed: 4.54 ft at 7:30AM Jul 30, 2014Observed: 4.54 ft at 8:00AM Jul 30, 2014Observed: 4.54 ft at 8:30AM Jul 30, 2014Observed: 4.55 ft at 9:00AM Jul 30, 2014Observed: 4.55 ft at 9:30AM Jul 30, 2014Observed: 4.55 ft at 10:00AM Jul 30, 2014Observed: 4.55 ft at 10:30AM Jul 30, 2014Observed: 4.55 ft at 11:00AM Jul 30, 2014Observed: 4.55 ft at 11:30AM Jul 30, 2014Observed: 4.55 ft at 12:00PM Jul 30, 2014Observed: 4.54 ft at 12:30PM Jul 30, 2014Observed: 4.53 ft at 1:00PM Jul 30, 2014Observed: 4.53 ft at 1:30PM Jul 30, 2014Observed: 4.52 ft at 2:00PM Jul 30, 2014Observed: 4.51 ft at 2:30PM Jul 30, 2014Observed: 4.51 ft at 3:00PM Jul 30, 2014Observed: 4.51 ft at 3:30PM Jul 30, 2014Observed: 4.51 ft at 4:00PM Jul 30, 2014Observed: 4.5 ft at 4:30PM Jul 30, 2014Observed: 4.5 ft at 5:00PM Jul 30, 2014Observed: 4.5 ft at 5:30PM Jul 30, 2014Observed: 4.49 ft at 6:00PM Jul 30, 2014Observed: 4.49 ft at 6:30PM Jul 30, 2014Observed: 4.48 ft at 7:00PM Jul 30, 2014Observed: 4.48 ft at 7:30PM Jul 30, 2014Observed: 4.48 ft at 8:00PM Jul 30, 2014Observed: 4.47 ft at 8:30PM Jul 30, 2014Observed: 4.47 ft at 9:00PM Jul 30, 2014Observed: 4.46 ft at 9:30PM Jul 30, 2014Observed: 4.46 ft at 10:00PM Jul 30, 2014Observed: 4.46 ft at 10:30PM Jul 30, 2014Observed: 4.45 ft at 11:00PM Jul 30, 2014Observed: 4.44 ft at 11:30PM Jul 30, 2014Observed: 4.44 ft at 12:00AM Jul 31, 2014Observed: 4.43 ft at 12:30AM Jul 31, 2014Observed: 4.42 ft at 1:00AM Jul 31, 2014Observed: 4.41 ft at 1:30AM Jul 31, 2014Observed: 4.4 ft at 2:00AM Jul 31, 2014Observed: 4.39 ft at 2:30AM Jul 31, 2014Observed: 4.38 ft at 3:00AM Jul 31, 2014Observed: 4.36 ft at 3:30AM Jul 31, 2014Observed: 4.35 ft at 4:00AM Jul 31, 2014Observed: 4.34 ft at 4:30AM Jul 31, 2014Observed: 4.33 ft at 5:00AM Jul 31, 2014Observed: 4.32 ft at 5:30AM Jul 31, 2014Observed: 4.32 ft at 6:00AM Jul 31, 2014Observed: 4.31 ft at 6:30AM Jul 31, 2014Observed: 4.31 ft at 7:00AM Jul 31, 2014Observed: 4.31 ft at 7:30AM Jul 31, 2014Observed: 4.32 ft at 8:00AM Jul 31, 2014Observed: 4.32 ft at 8:30AM Jul 31, 2014Observed: 4.33 ft at 9:00AM Jul 31, 2014Observed: 4.34 ft at 9:30AM Jul 31, 2014Highest Forecast: 4.3 ft 1:00PM Jul 31, 2014Highest Forecast: 4.3 ft 7:00PM Jul 31, 2014Forecast: 4.2 ft 1:00AM Aug 01, 2014Forecast: 4.2 ft 7:00AM Aug 01, 2014Forecast: 4.1 ft 1:00PM Aug 01, 2014Forecast: 4.1 ft 7:00PM Aug 01, 2014Forecast: 4 ft 1:00AM Aug 02, 2014Forecast: 4 ft 7:00AM Aug 02, 2014Forecast: 4 ft 1:00PM Aug 02, 2014Forecast: 3.9 ft 7:00PM Aug 02, 2014Forecast: 3.9 ft 1:00AM Aug 03, 2014Forecast: 3.8 ft 7:00AM Aug 03, 2014Forecast: 3.8 ft 1:00PM Aug 03, 2014Forecast: 3.8 ft 7:00PM Aug 03, 2014Forecast: 3.8 ft 1:00AM Aug 04, 2014Forecast: 3.7 ft 7:00AM Aug 04, 2014USGS--Water Resources of the United StatesGNDL1(plotting HGIRG) Graph Created (10:19AM Jul 31, 2014)ObservedForecast (issued 9:19AM Jul 30)Latest observed value: 4.34 ft at 9:30 AM CDT 31-Jul-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

(P): Preliminary values subject to further review.

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
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
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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Page last modified: 16-Jul-2014 2:07 AM
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