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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.

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Hydrograph River at a Glance Download
Mississippi River at Reserve Stage (ft)Observed: 2.35 ft at 6:00PM Sep 22, 2023Observed: 2.29 ft at 7:00PM Sep 22, 2023Observed: 2.16 ft at 8:00PM Sep 22, 2023Observed: 2.11 ft at 9:00PM Sep 22, 2023Observed: 2.09 ft at 10:00PM Sep 22, 2023Observed: 2.15 ft at 11:00PM Sep 22, 2023Observed: 2.25 ft at 12:00AM Sep 23, 2023Observed: 2.33 ft at 1:00AM Sep 23, 2023Observed: 2.48 ft at 2:00AM Sep 23, 2023Observed: 2.7 ft at 3:00AM Sep 23, 2023Observed: 2.84 ft at 4:00AM Sep 23, 2023Observed: 3.01 ft at 5:00AM Sep 23, 2023Observed: 3.17 ft at 6:00AM Sep 23, 2023Observed: 3.29 ft at 7:00AM Sep 23, 2023Observed: 3.33 ft at 8:00AM Sep 23, 2023Observed: 3.42 ft at 9:00AM Sep 23, 2023Observed: 3.41 ft at 10:00AM Sep 23, 2023Observed: 3.38 ft at 11:00AM Sep 23, 2023Observed: 3.18 ft at 12:00PM Sep 23, 2023Observed: 3.16 ft at 1:00PM Sep 23, 2023Observed: 3.06 ft at 2:00PM Sep 23, 2023Observed: 2.92 ft at 3:00PM Sep 23, 2023Observed: 2.75 ft at 4:00PM Sep 23, 2023Observed: 2.59 ft at 5:00PM Sep 23, 2023Observed: 2.36 ft at 6:00PM Sep 23, 2023Observed: 2.21 ft at 7:00PM Sep 23, 2023Observed: 2.12 ft at 8:00PM Sep 23, 2023Observed: 2.13 ft at 1:00AM Sep 24, 2023Observed: 2.28 ft at 2:00AM Sep 24, 2023Observed: 2.48 ft at 3:00AM Sep 24, 2023Observed: 2.65 ft at 4:00AM Sep 24, 2023Observed: 2.83 ft at 5:00AM Sep 24, 2023Observed: 2.98 ft at 6:00AM Sep 24, 2023Observed: 3.13 ft at 7:00AM Sep 24, 2023Observed: 3.25 ft at 8:00AM Sep 24, 2023Observed: 3.37 ft at 10:00AM Sep 24, 2023Observed: 3.37 ft at 11:00AM Sep 24, 2023Observed: 3.39 ft at 12:00PM Sep 24, 2023Observed: 3.33 ft at 1:00PM Sep 24, 2023Observed: 3.2 ft at 2:00PM Sep 24, 2023Observed: 3.04 ft at 3:00PM Sep 24, 2023Observed: 2.67 ft at 4:00PM Sep 24, 2023Observed: 2.74 ft at 5:00PM Sep 24, 2023Observed: 2.41 ft at 6:00PM Sep 24, 2023Observed: 2.27 ft at 7:00PM Sep 24, 2023Observed: 2.08 ft at 8:00PM Sep 24, 2023Observed: 2.01 ft at 9:00PM Sep 24, 2023Observed: 2.11 ft at 3:00AM Sep 25, 2023Observed: 2.3 ft at 4:00AM Sep 25, 2023Observed: 2.47 ft at 5:00AM Sep 25, 2023Observed: 2.62 ft at 6:00AM Sep 25, 2023Observed: 2.84 ft at 7:00AM Sep 25, 2023Observed: 2.97 ft at 8:00AM Sep 25, 2023Observed: 3.09 ft at 9:00AM Sep 25, 2023Observed: 3.2 ft at 10:00AM Sep 25, 2023Observed: 3.24 ft at 11:00AM Sep 25, 2023Observed: 3.29 ft at 12:00PM Sep 25, 2023Observed: 3.3 ft at 1:00PM Sep 25, 2023Observed: 3.3 ft at 2:00PM Sep 25, 2023Observed: 3.11 ft at 3:00PM Sep 25, 2023Observed: 3.12 ft at 4:00PM Sep 25, 2023Observed: 3.01 ft at 5:00PM Sep 25, 2023Observed: 2.72 ft at 6:00PM Sep 25, 2023Observed: 2.54 ft at 7:00PM Sep 25, 2023Observed: 2.4 ft at 8:00PM Sep 25, 2023Observed: 2.28 ft at 9:00PM Sep 25, 2023Observed: 2.06 ft at 11:00PM Sep 25, 2023Observed: 2 ft at 12:00AM Sep 26, 2023Observed: 2.02 ft at 1:00AM Sep 26, 2023Observed: 2.1 ft at 2:00AM Sep 26, 2023Observed: 2.18 ft at 3:00AM Sep 26, 2023Observed: 2.35 ft at 4:00AM Sep 26, 2023Observed: 2.65 ft at 6:00AM Sep 26, 2023Observed: 2.79 ft at 7:00AM Sep 26, 2023Observed: 2.9 ft at 8:00AM Sep 26, 2023Observed: 3.05 ft at 9:00AM Sep 26, 2023Observed: 3.19 ft at 10:00AM Sep 26, 2023Observed: 3.29 ft at 11:00AM Sep 26, 2023Observed: 3.29 ft at 12:00PM Sep 26, 2023Observed: 3.35 ft at 1:00PM Sep 26, 2023Observed: 3.35 ft at 2:00PM Sep 26, 2023Observed: 3.39 ft at 3:00PM Sep 26, 2023Observed: 3.27 ft at 4:00PM Sep 26, 2023Observed: 3.16 ft at 5:00PM Sep 26, 2023Observed: 3.06 ft at 6:00PM Sep 26, 2023Observed: 2.92 ft at 7:00PM Sep 26, 2023Observed: 2.68 ft at 8:00PM Sep 26, 2023Observed: 2.49 ft at 9:00PM Sep 26, 2023Observed: 2.35 ft at 10:00PM Sep 26, 2023Observed: 2.24 ft at 11:00PM Sep 26, 2023Observed: 2.11 ft at 12:00AM Sep 27, 2023Observed: 2.09 ft at 1:00AM Sep 27, 2023Observed: 2.19 ft at 2:00AM Sep 27, 2023Observed: 2.28 ft at 3:00AM Sep 27, 2023Observed: 2.36 ft at 4:00AM Sep 27, 2023Observed: 2.46 ft at 5:00AM Sep 27, 2023Observed: 2.62 ft at 6:00AM Sep 27, 2023Observed: 2.67 ft at 7:00AM Sep 27, 2023Observed: 2.78 ft at 8:00AM Sep 27, 2023Observed: 3.01 ft at 9:00AM Sep 27, 2023Observed: 3.11 ft at 10:00AM Sep 27, 2023Observed: 3.21 ft at 11:00AM Sep 27, 2023Observed: 3.42 ft at 12:00PM Sep 27, 2023Observed: 3.52 ft at 1:00PM Sep 27, 2023Observed: 3.61 ft at 2:00PM Sep 27, 2023Observed: 3.68 ft at 3:00PM Sep 27, 2023Observed: 3.81 ft at 4:00PM Sep 27, 2023Observed: 3.79 ft at 5:00PM Sep 27, 2023Observed: 3.7 ft at 6:00PM Sep 27, 2023Observed: 3.55 ft at 7:00PM Sep 27, 2023Observed: 3.47 ft at 8:00PM Sep 27, 2023Observed: 3.22 ft at 9:00PM Sep 27, 2023Observed: 3.13 ft at 10:00PM Sep 27, 2023Observed: 2.99 ft at 11:00PM Sep 27, 2023Observed: 2.95 ft at 12:00AM Sep 28, 2023Observed: 2.97 ft at 1:00AM Sep 28, 2023Observed: 2.94 ft at 2:00AM Sep 28, 2023Observed: 2.99 ft at 3:00AM Sep 28, 2023Observed: 3.04 ft at 4:00AM Sep 28, 2023Observed: 3.17 ft at 5:00AM Sep 28, 2023Observed: 3.12 ft at 6:00AM Sep 28, 2023Observed: 3.19 ft at 7:00AM Sep 28, 2023Observed: 3.35 ft at 8:00AM Sep 28, 2023Observed: 3.4 ft at 9:00AM Sep 28, 2023Observed: 3.45 ft at 10:00AM Sep 28, 2023Observed: 3.38 ft at 11:00AM Sep 28, 2023Observed: 3.47 ft at 12:00PM Sep 28, 2023Observed: 3.57 ft at 1:00PM Sep 28, 2023Observed: 3.71 ft at 2:00PM Sep 28, 2023Observed: 3.74 ft at 3:00PM Sep 28, 2023Observed: 3.8 ft at 4:00PM Sep 28, 2023Highest Observation: 3.82 ft at 5:00PM Sep 28, 2023Observed: 3.81 ft at 6:00PM Sep 28, 2023Observed: 3.74 ft at 7:00PM Sep 28, 2023Observed: 3.76 ft at 8:00PM Sep 28, 2023Observed: 3.64 ft at 9:00PM Sep 28, 2023Observed: 3.47 ft at 10:00PM Sep 28, 2023Observed: 3.52 ft at 11:00PM Sep 28, 2023Observed: 3.46 ft at 12:00AM Sep 29, 2023Observed: 3.39 ft at 1:00AM Sep 29, 2023Observed: 3.38 ft at 2:00AM Sep 29, 2023Observed: 3.33 ft at 3:00AM Sep 29, 2023Observed: 3.36 ft at 4:00AM Sep 29, 2023Observed: 3.43 ft at 5:00AM Sep 29, 2023Observed: 3.42 ft at 6:00AM Sep 29, 2023Observed: 3.39 ft at 7:00AM Sep 29, 2023Observed: 3.36 ft at 8:00AM Sep 29, 2023Observed: 3.33 ft at 9:00AM Sep 29, 2023Observed: 3.28 ft at 10:00AM Sep 29, 2023Observed: 3.21 ft at 11:00AM Sep 29, 2023Observed: 3.24 ft at 12:00PM Sep 29, 2023Observed: 3.28 ft at 1:00PM Sep 29, 2023Observed: 3.27 ft at 2:00PM Sep 29, 2023Observed: 3.39 ft at 3:00PM Sep 29, 2023Observed: 3.52 ft at 4:00PM Sep 29, 2023Forecast: 3.4 ft 7:00PM Sep 29, 2023Forecast: 3.4 ft 1:00AM Sep 30, 2023Forecast: 3.3 ft 7:00AM Sep 30, 2023Forecast: 3.1 ft 1:00PM Sep 30, 2023Forecast: 3.3 ft 7:00PM Sep 30, 2023Forecast: 3.6 ft 1:00AM Oct 01, 2023Forecast: 3.3 ft 7:00AM Oct 01, 2023Forecast: 2.9 ft 1:00PM Oct 01, 2023Forecast: 3.1 ft 7:00PM Oct 01, 2023Forecast: 3.7 ft 1:00AM Oct 02, 2023Forecast: 3.5 ft 7:00AM Oct 02, 2023Forecast: 3.2 ft 1:00PM Oct 02, 2023Forecast: 2.8 ft 7:00PM Oct 02, 2023Forecast: 3.2 ft 1:00AM Oct 03, 2023Forecast: 3.6 ft 7:00AM Oct 03, 2023Forecast: 3.1 ft 1:00PM Oct 03, 2023Forecast: 2.6 ft 7:00PM Oct 03, 2023Forecast: 3.1 ft 1:00AM Oct 04, 2023Forecast: 3.6 ft 7:00AM Oct 04, 2023Forecast: 3.3 ft 1:00PM Oct 04, 2023Forecast: 2.2 ft 7:00PM Oct 04, 2023Forecast: 3.1 ft 1:00AM Oct 05, 2023Highest Forecast: 3.8 ft 7:00AM Oct 05, 2023Forecast: 3.1 ft 1:00PM Oct 05, 2023Forecast: 2.2 ft 7:00PM Oct 05, 2023Forecast: 2.9 ft 1:00AM Oct 06, 2023Forecast: 3.6 ft 7:00AM Oct 06, 2023Forecast: 2.9 ft 1:00PM Oct 06, 2023Forecast: 2.2 ft 7:00PM Oct 06, 2023Forecast: 3 ft 1:00AM Oct 07, 2023Forecast: 3.6 ft 7:00AM Oct 07, 2023Forecast: 3.1 ft 1:00PM Oct 07, 2023Forecast: 2.6 ft 7:00PM Oct 07, 2023Forecast: 2.8 ft 1:00AM Oct 08, 2023Forecast: 3.4 ft 7:00AM Oct 08, 2023Forecast: 3.2 ft 1:00PM Oct 08, 2023Forecast: 2.2 ft 7:00PM Oct 08, 2023Forecast: 2.7 ft 1:00AM Oct 09, 2023Forecast: 3.3 ft 7:00AM Oct 09, 2023Forecast: 2.9 ft 1:00PM Oct 09, 2023Forecast: 2.1 ft 7:00PM Oct 09, 2023Forecast: 2.8 ft 1:00AM Oct 10, 2023Forecast: 3.3 ft 7:00AM Oct 10, 2023Forecast: 3 ft 1:00PM Oct 10, 2023Forecast: 2.3 ft 7:00PM Oct 10, 2023Forecast: 2.5 ft 1:00AM Oct 11, 2023Forecast: 2.8 ft 7:00AM Oct 11, 2023Forecast: 2.9 ft 1:00PM Oct 11, 2023Forecast: 3 ft 7:00PM Oct 11, 2023Forecast: 2.8 ft 1:00AM Oct 12, 2023Forecast: 2.7 ft 7:00AM Oct 12, 2023Forecast: 2.7 ft 1:00PM Oct 12, 2023Forecast: 2.7 ft 7:00PM Oct 12, 2023Forecast: 2.7 ft 1:00AM Oct 13, 2023Forecast: 2.7 ft 7:00AM Oct 13, 2023Forecast: 2.7 ft 1:00PM Oct 13, 2023RRVL1(plotting HGIRG) Graph Created (5:39PM Sep 29, 2023)ObservedForecast (issued 10:20AM Sep 29)Latest observed value: 3.52 ft at 4:00 PM CDT 29-Sep-2023. Flood Stage is 22 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: Not Available
Metadata
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 Mississippi River at Reserve are issued routinely year-round.

Return to Area Map
Upstream Gauge - at Donaldsonville Upstream Gauge Downstream Gauge Downstream Gauge - at Bonnet Carre North near Montz
Flood Categories (in feet)
Major Flood Stage: 26
Moderate Flood Stage: 24
Flood Stage: 22
Action Stage: 21
Low Stage (in feet): -9999

Historic Crests
(1) 26.00 ft on 06/11/1929
(2) 25.90 ft on 04/28/1945
(3) 25.60 ft on 03/05/1932
(4) 25.60 ft on 02/26/1937
(5) 25.60 ft on 02/10/1950
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 24.50 ft on 04/17/2020
(2) 24.07 ft on 03/19/2019
(3) 24.07 ft on 03/18/2019
(4) 23.87 ft on 03/19/2018
(5) 22.77 ft on 06/03/2017
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -0.65 ft on 12/03/2022
(2) -0.10 ft on 02/03/1940
(3) 0.20 ft on 01/13/1964
(4) 0.22 ft on 12/13/2012
(5) 0.30 ft on 02/11/1931
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:16
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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
26 Flood of Record occured on June 11, 1929.
24 Slow-bell procedures will be enacted for river transportation.
22 Marine and industrial interests along the river, upstream barge operators, and facilities are impacted. Navigation will become difficult for smaller river craft. Safety precautions for river traffic are urged.
About This Location Collapse

Latitude: 30.055556° N, Longitude: 90.568611° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 22 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 22 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:
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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
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Slidell, LA 70460-5243
(504) 522-7330
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