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Hydrograph River at a Glance Download
Atchafalaya River at Bayou Sorrel Lock Stage (ft)Highest Observation: 8.9 ft at 6:00AM Mar 28, 2023Highest Observation: 8.9 ft at 6:00AM Mar 29, 2023Highest Observation: 8.9 ft at 7:00AM Mar 30, 2023Highest Observation: 8.9 ft at 7:00AM Mar 31, 2023Highest Observation: 8.9 ft at 7:00AM Apr 01, 2023Forecast: 8.9 ft 1:00PM Apr 01, 2023Forecast: 8.9 ft 7:00PM Apr 01, 2023Forecast: 9 ft 1:00AM Apr 02, 2023Forecast: 9 ft 7:00AM Apr 02, 2023Forecast: 9 ft 1:00PM Apr 02, 2023Forecast: 9 ft 7:00PM Apr 02, 2023Forecast: 9 ft 1:00AM Apr 03, 2023Forecast: 9 ft 7:00AM Apr 03, 2023Forecast: 9.1 ft 1:00PM Apr 03, 2023Forecast: 9.1 ft 7:00PM Apr 03, 2023Forecast: 9.1 ft 1:00AM Apr 04, 2023Forecast: 9.1 ft 7:00AM Apr 04, 2023Forecast: 9.2 ft 1:00PM Apr 04, 2023Forecast: 9.2 ft 7:00PM Apr 04, 2023Forecast: 9.2 ft 1:00AM Apr 05, 2023Forecast: 9.3 ft 7:00AM Apr 05, 2023Forecast: 9.3 ft 1:00PM Apr 05, 2023Forecast: 9.3 ft 7:00PM Apr 05, 2023Forecast: 9.3 ft 1:00AM Apr 06, 2023Forecast: 9.4 ft 7:00AM Apr 06, 2023Forecast: 9.4 ft 1:00PM Apr 06, 2023Forecast: 9.4 ft 7:00PM Apr 06, 2023Forecast: 9.5 ft 1:00AM Apr 07, 2023Forecast: 9.5 ft 7:00AM Apr 07, 2023Forecast: 9.5 ft 1:00PM Apr 07, 2023Forecast: 9.5 ft 7:00PM Apr 07, 2023Forecast: 9.6 ft 1:00AM Apr 08, 2023Forecast: 9.6 ft 7:00AM Apr 08, 2023Forecast: 9.6 ft 1:00PM Apr 08, 2023Forecast: 9.6 ft 7:00PM Apr 08, 2023Forecast: 9.6 ft 1:00AM Apr 09, 2023Forecast: 9.7 ft 7:00AM Apr 09, 2023Forecast: 9.7 ft 1:00PM Apr 09, 2023Forecast: 9.7 ft 7:00PM Apr 09, 2023Forecast: 9.7 ft 1:00AM Apr 10, 2023Forecast: 9.7 ft 7:00AM Apr 10, 2023Forecast: 9.7 ft 1:00PM Apr 10, 2023Forecast: 9.7 ft 7:00PM Apr 10, 2023Highest Forecast: 9.8 ft 1:00AM Apr 11, 2023Highest Forecast: 9.8 ft 7:00AM Apr 11, 2023Highest Forecast: 9.8 ft 1:00PM Apr 11, 2023Highest Forecast: 9.8 ft 7:00PM Apr 11, 2023Highest Forecast: 9.8 ft 1:00AM Apr 12, 2023Highest Forecast: 9.8 ft 7:00AM Apr 12, 2023Highest Forecast: 9.8 ft 1:00PM Apr 12, 2023Highest Forecast: 9.8 ft 7:00PM Apr 12, 2023Highest Forecast: 9.8 ft 1:00AM Apr 13, 2023Highest Forecast: 9.8 ft 7:00AM Apr 13, 2023Highest Forecast: 9.8 ft 1:00PM Apr 13, 2023Highest Forecast: 9.8 ft 7:00PM Apr 13, 2023Highest Forecast: 9.8 ft 1:00AM Apr 14, 2023Highest Forecast: 9.8 ft 7:00AM Apr 14, 2023Highest Forecast: 9.8 ft 1:00PM Apr 14, 2023Forecast: 9.7 ft 7:00PM Apr 14, 2023Forecast: 9.7 ft 1:00AM Apr 15, 2023Forecast: 9.7 ft 7:00AM Apr 15, 2023BSRL1(plotting HGIRZ) Graph Created (11:54AM Apr 1, 2023)ObservedForecast (issued 10:55AM Apr 1)Latest observed value: 8.9 ft at 7:00 AM CDT 1-Apr-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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