Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

Weather Forecast Office New Orleans/Baton Rouge, LA

Lower Mississippi River Forecast Center

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

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NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time. NOTE: Forecasts for the Tangipahoa River at Robert are issued routinely year-round.

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Upstream Gauge

Flood Categories (in feet) Major Flood Stage: 21 Moderate Flood Stage: 18 Flood Stage: 15 Action Stage: 13 Low Stage (in feet): -9999 Historic Crests (1) 27.33 ft on 08/13/2016 (2) 27.10 ft on 03/14/1921 (3) 25.87 ft on 04/07/1983 (4) 25.52 ft on 03/12/2016 (5) 23.95 ft on 09/01/2012 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 16.28 ft on 12/22/2022 (2) 15.70 ft on 11/26/2022 (3) 17.52 ft on 08/26/2022 (4) 15.46 ft on 04/15/2022 (5) 15.38 ft on 02/04/2022 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records (1) 2.04 ft on 09/30/2004 (2) 2.95 ft on 10/25/1939 (3) 3.80 ft on 10/30/1968 (4) 5.02 ft on 10/23/1976 (5) 5.26 ft on 11/13/1981 Show More Low Water Records For more information on your flood risk go to www.floodsmart.gov. Show FEMA's National Flood Hazard Layers FEMA's National Flood Hazard Layers not showing? Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map? Possible reasons: There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. The FEMA Web Mapping Service (WMS) is down. Note: Your zoom level may have changed. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers.

Zoom Level:16 Legend FEMA Layer 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

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27.33	Flood of Record occurred on August 13, 2016. Widespread flooding will occur and evacuations will be necessary. Roads will be impassable, including LA Highways 190 and 1067. Interstate 12 will be flooded on both sides.
27	Widespread flooding of Tangipahoa Parish will continue south of Highway 190 from the Natalbany River to east of Bedicoe Creek. Water will be at the top of the abandoned railroad trestle 100 feet downstream from the Highway 190 bridge.
24	Highway 190 will be inundated from just east of Hammond through Robert to Bedico Creek. Highway 22 will be under water in many places. Some homes in Magnolia Island will flood. Access to Lee's Landing will be cut off. Homes and commercial sites near Robert will be moderately flooded. Water will be in homes along Highways 445 and 443. Highway 445 will be under water and closed from Highway 190 to Interstate 12.
21	Water will be in homes along Highway 445 and Highway 443. Highway 445 will be under water and closed from Highway 190 to Interstate 12. Louisiana Highway 22 will be under water in many places. Access to Magnolia Island and Lee's Landing will be cut off.
18	Evacuation of trailers at Hidden Oaks must be completed. Water covers the entrance to camp grounds. Secondary roads and unimproved roads north of Robert will flood as Chappepeela Creek backs up. Low places on Highway 22 south of Robert will be under water.
17	Low places along Highway 22 south of Robert will be under water. Water will approach the entrance of Hidden Oaks Campground. Trailers at the camp ground will be unable to be moved out when the river reaches 18 feet.
16	Minor flooding near the river with beach areas under water.
15	Minor flooding near the river.

About This Location

Latitude: 30.506389° N, Longitude: 90.361667° 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 6.6 ft 21.6 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   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Robert

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Snow Information

Collaborative Agencies 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 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:29 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities