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Over 200 USGS real-time streamgages used to support NWS river forecasts and warnings are at risk of being discontinued. Click here for more information from the USGS...
Weather Forecast Office Shreveport, LA Lower Mississippi River Forecast Center
Hydrograph River at a Glance Download Weekly Chance of
Exceeding Levels		 Chance of Exceeding Levels
During Entire Period
Sulphur River near Naples Stage (ft)Flow (kcfs)Observed: 17.5 ft at 7:00AM May 20, 2013Highest Observation: 18.5 ft at 7:00AM May 21, 2013Observed: 16.5 ft at 7:00AM May 22, 2013Forecast: 13.5 ft 1:00AM May 23, 2013Forecast: 12.6 ft 7:00AM May 23, 2013Forecast: 11.9 ft 1:00PM May 23, 2013Forecast: 11.3 ft 7:00PM May 23, 2013Forecast: 10.9 ft 1:00AM May 24, 2013Forecast: 10.7 ft 7:00AM May 24, 2013Forecast: 10.5 ft 1:00PM May 24, 2013Forecast: 10.6 ft 7:00PM May 24, 2013Forecast: 10.8 ft 1:00AM May 25, 2013Forecast: 11.2 ft 7:00AM May 25, 2013Forecast: 11.9 ft 1:00PM May 25, 2013Forecast: 13.4 ft 7:00PM May 25, 2013Forecast: 15.5 ft 1:00AM May 26, 2013Forecast: 16.8 ft 7:00AM May 26, 2013Highest Forecast: 17.2 ft 1:00PM May 26, 2013Forecast: 17 ft 7:00PM May 26, 2013Forecast: 16.3 ft 1:00AM May 27, 2013Forecast: 15.4 ft 7:00AM May 27, 2013NAPT2(plotting HGIRZ) Graph Created (7:53PM May 22, 2013)ObservedForecast (issued 9:00AM May 22)Latest observed value: 16.5 ft at 7:00 AM CDT 22-May-2013. Flood Stage is 22 ft
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NOTE: Automated gauge readings are unavailable, readings taken manually.

Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions

NOTE: Forecasts for the Sulphur River near Naples are issued routinely year-round.

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Upstream Gauge - near Talco Upstream Gauge
Flood Categories (in feet)
Major Flood Stage:34
Moderate Flood Stage:30
Flood Stage:22
Action Stage:21.5

Historical Crests
(1) 37.60 ft on 04/01/1945
(2) 36.83 ft on 12/13/1971
(3) 35.00 ft on 01/25/1938
(4) 34.50 ft on 12/20/2001
(5) 33.57 ft on 05/05/1958
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Low Water Records
(1) 0.10 ft on 08/01/1924
(2) 0.20 ft on 09/10/1925
(3) 0.30 ft on 08/28/1923
Show More Low Water Records
Legend
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 Collapse
36 SEVERE FLOODING OF LOWLANDS WITH SEVERE BACKWATER FLOODING AT THE CONFLUENCE OF THE SULPHUR RIVER WITH WHITE OAK CREEK AND DOWNSTREAM TO LAKE WRIGHT PATMAN.
31 EXPECT FLOODING TO CONTINUE FOR SEVERAL MORE DAYS AS THE RIVER SLOWLY FALLS.
31 BOAT RAMPS NEAR THE U.S. HIGHWAY 67 BRIDGE WILL BE COMPLETELY FLOODED AND ALL PERSONS SHOULD USE CAUTION ON THE RIVER AS CURRENTS ARE SWIFT AND TURBULENT. THE BOAT RAMP ON THE US HIGHWAY 67 BRIDGE NORTHEAST OF NAPLES WILL BE COMPLETELY FLOODED.
22 EXPECT MINOR LOWLAND FLOODING OF THE HEAVILY WOODED AND BROAD FLOODPLAIN. RANCHERS THAT MAY HAVE CATTLE AND EQUIPMENT IN THE RIVER BOTTOMS SHOULD MOVE THEM TO HIGHER GROUND. FISHERMAN SHOULD USE CAUTION AS CURRENTS ARE SWIFT.
About This Location Collapse

Latitude: 33.250000° N, Longitude: 94.616667° 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 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 220.61 ft 242.61 ft 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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Collaborative Agencies Collapse
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
Shreveport Weather Forecast Office
5655 Hollywood Avenue
Shreveport, LA 71109
(318) 631-3669
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Page last modified: 13-Mar-2013 6:27 PM 		Disclaimer
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