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Hydrograph River at a Glance Download
Atchafalaya River at Bayou Sorrel Lock Stage (ft)Observed: 6.5 ft at 7:00AM May 25, 2023Highest Observation: 6.6 ft at 7:00AM May 26, 2023Observed: 6.5 ft at 7:00AM May 27, 2023Highest Observation: 6.6 ft at 7:00AM May 28, 2023Observed: 6.5 ft at 6:00AM May 29, 2023Highest Forecast: 6.6 ft 1:00PM May 29, 2023Highest Forecast: 6.6 ft 7:00PM May 29, 2023Highest Forecast: 6.6 ft 1:00AM May 30, 2023Forecast: 6.5 ft 7:00AM May 30, 2023Forecast: 6.5 ft 1:00PM May 30, 2023Forecast: 6.5 ft 7:00PM May 30, 2023Forecast: 6.5 ft 1:00AM May 31, 2023Forecast: 6.5 ft 7:00AM May 31, 2023Forecast: 6.4 ft 1:00PM May 31, 2023Forecast: 6.4 ft 7:00PM May 31, 2023Forecast: 6.4 ft 1:00AM Jun 01, 2023Forecast: 6.4 ft 7:00AM Jun 01, 2023Forecast: 6.3 ft 1:00PM Jun 01, 2023Forecast: 6.3 ft 7:00PM Jun 01, 2023Forecast: 6.3 ft 1:00AM Jun 02, 2023Forecast: 6.3 ft 7:00AM Jun 02, 2023Forecast: 6.3 ft 1:00PM Jun 02, 2023Forecast: 6.2 ft 7:00PM Jun 02, 2023Forecast: 6.2 ft 1:00AM Jun 03, 2023Forecast: 6.2 ft 7:00AM Jun 03, 2023Forecast: 6.2 ft 1:00PM Jun 03, 2023Forecast: 6.2 ft 7:00PM Jun 03, 2023Forecast: 6.1 ft 1:00AM Jun 04, 2023Forecast: 6.1 ft 7:00AM Jun 04, 2023Forecast: 6.1 ft 1:00PM Jun 04, 2023Forecast: 6.1 ft 7:00PM Jun 04, 2023Forecast: 6.1 ft 1:00AM Jun 05, 2023Forecast: 6 ft 7:00AM Jun 05, 2023Forecast: 6 ft 1:00PM Jun 05, 2023Forecast: 6 ft 7:00PM Jun 05, 2023Forecast: 6 ft 1:00AM Jun 06, 2023Forecast: 5.9 ft 7:00AM Jun 06, 2023Forecast: 5.9 ft 1:00PM Jun 06, 2023Forecast: 5.9 ft 7:00PM Jun 06, 2023Forecast: 5.9 ft 1:00AM Jun 07, 2023Forecast: 5.9 ft 7:00AM Jun 07, 2023Forecast: 5.8 ft 1:00PM Jun 07, 2023Forecast: 5.8 ft 7:00PM Jun 07, 2023Forecast: 5.8 ft 1:00AM Jun 08, 2023Forecast: 5.8 ft 7:00AM Jun 08, 2023Forecast: 5.8 ft 1:00PM Jun 08, 2023Forecast: 5.8 ft 7:00PM Jun 08, 2023Forecast: 5.8 ft 1:00AM Jun 09, 2023Forecast: 5.8 ft 7:00AM Jun 09, 2023Forecast: 5.7 ft 1:00PM Jun 09, 2023Forecast: 5.7 ft 7:00PM Jun 09, 2023Forecast: 5.7 ft 1:00AM Jun 10, 2023Forecast: 5.7 ft 7:00AM Jun 10, 2023Forecast: 5.7 ft 1:00PM Jun 10, 2023Forecast: 5.7 ft 7:00PM Jun 10, 2023Forecast: 5.7 ft 1:00AM Jun 11, 2023Forecast: 5.6 ft 7:00AM Jun 11, 2023BSRL1(plotting HGIRZ) Graph Created (9:24AM May 29, 2023)ObservedForecast (issued 9:54AM May 28)Latest observed value: 6.5 ft at 6:00 AM CDT 29-May-2023. Flood Stage is 12 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the Atchafalaya River at Bayou Sorrel Lock are issued routinely year-round.
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Downstream Gauge Downstream Gauge - at Morgan City
Flood Categories (in feet)
Major Flood Stage: 30
Moderate Flood Stage: 18
Flood Stage: 12
Action Stage: 10
Low Stage (in feet): -9999

Historic Crests
(1) 18.10 ft on 05/23/1973
(2) 17.40 ft on 05/29/2011
(3) 17.40 ft on 05/28/2011
(4) 13.71 ft on 03/16/2019
(5) 12.90 ft on 01/23/2016
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 13.71 ft on 03/16/2019
(2) 12.90 ft on 01/23/2016
(3) 17.40 ft on 05/29/2011
(4) 17.40 ft on 05/28/2011
(5) 12.40 ft on 04/28/2008
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.00 ft on 10/18/1976
(2) 0.00 ft on 01/14/1964
(3) 0.80 ft on 12/25/1989
(4) 1.00 ft on 02/16/1977
(5) 1.00 ft on 10/09/2000
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.
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
30 The top of the levee protecting the town of Bayou Sorrel will be reached. Evacuation is strongly recommended.
18 Over 500,000 acres on the Floodway Side of the levee will be inundated. Recreational areas will be closed.
12 On the Floodway Side (FWS) of the protection levee, recreational activity and navigation on Grand River and the Atchafalaya River main channel may be curtailed because of increased flow.
About This Location Collapse

Latitude: 30.130000° N, Longitude: 91.322500° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 12 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 0 ft 12 ft 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  
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Hydrologic Resources Additional Resources
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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
New Orleans/Baton Rouge Weather Forecast Office
62300 Airport Rd.
Slidell, LA 70460-5243
(504) 522-7330
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