Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Bookmark and Share Navigation Bar End Cap

  
 
Hydrograph River at a Glance Download
Mermentau River at Mermentau Stage (ft)Observed: 2.12 ft at 10:30AM Oct 26, 2014Observed: 2.12 ft at 10:45AM Oct 26, 2014Observed: 2.13 ft at 11:00AM Oct 26, 2014Observed: 2.13 ft at 11:15AM Oct 26, 2014Observed: 2.14 ft at 11:30AM Oct 26, 2014Observed: 2.14 ft at 11:45AM Oct 26, 2014Observed: 2.14 ft at 12:00PM Oct 26, 2014Observed: 2.14 ft at 12:15PM Oct 26, 2014Observed: 2.14 ft at 12:30PM Oct 26, 2014Observed: 2.14 ft at 12:45PM Oct 26, 2014Observed: 2.15 ft at 1:00PM Oct 26, 2014Observed: 2.15 ft at 1:15PM Oct 26, 2014Observed: 2.15 ft at 1:30PM Oct 26, 2014Observed: 2.15 ft at 1:45PM Oct 26, 2014Observed: 2.15 ft at 2:00PM Oct 26, 2014Observed: 2.15 ft at 2:15PM Oct 26, 2014Observed: 2.15 ft at 2:30PM Oct 26, 2014Observed: 2.14 ft at 2:45PM Oct 26, 2014Observed: 2.16 ft at 3:00PM Oct 26, 2014Observed: 2.16 ft at 3:15PM Oct 26, 2014Observed: 2.14 ft at 3:30PM Oct 26, 2014Observed: 2.16 ft at 3:45PM Oct 26, 2014Observed: 2.15 ft at 4:00PM Oct 26, 2014Observed: 2.16 ft at 4:15PM Oct 26, 2014Observed: 2.15 ft at 4:30PM Oct 26, 2014Observed: 2.16 ft at 4:45PM Oct 26, 2014Observed: 2.16 ft at 5:00PM Oct 26, 2014Observed: 2.16 ft at 5:15PM Oct 26, 2014Observed: 2.15 ft at 5:30PM Oct 26, 2014Observed: 2.16 ft at 5:45PM Oct 26, 2014Observed: 2.15 ft at 6:00PM Oct 26, 2014Observed: 2.16 ft at 6:15PM Oct 26, 2014Observed: 2.12 ft at 10:30AM Oct 27, 2014Observed: 2.12 ft at 10:45AM Oct 27, 2014Observed: 2.13 ft at 11:00AM Oct 27, 2014Observed: 2.13 ft at 11:15AM Oct 27, 2014Observed: 2.14 ft at 11:30AM Oct 27, 2014Observed: 2.15 ft at 11:45AM Oct 27, 2014Observed: 2.15 ft at 12:00PM Oct 27, 2014Observed: 2.16 ft at 12:15PM Oct 27, 2014Observed: 2.2 ft at 2:30PM Oct 27, 2014Observed: 2.19 ft at 2:45PM Oct 27, 2014Observed: 2.21 ft at 3:00PM Oct 27, 2014Observed: 2.21 ft at 3:15PM Oct 27, 2014Observed: 2.2 ft at 3:30PM Oct 27, 2014Observed: 2.21 ft at 3:45PM Oct 27, 2014Highest Observation: 2.22 ft at 4:00PM Oct 27, 2014Highest Observation: 2.22 ft at 4:15PM Oct 27, 2014Observed: 2.15 ft at 12:30PM Oct 29, 2014Observed: 2.15 ft at 12:45PM Oct 29, 2014Observed: 2.16 ft at 1:00PM Oct 29, 2014Observed: 2.16 ft at 1:15PM Oct 29, 2014Observed: 2.15 ft at 1:30PM Oct 29, 2014Observed: 2.15 ft at 1:45PM Oct 29, 2014Observed: 2.15 ft at 2:00PM Oct 29, 2014Observed: 2.14 ft at 2:15PM Oct 29, 2014Observed: 2.14 ft at 2:30PM Oct 29, 2014Observed: 2.13 ft at 2:45PM Oct 29, 2014Observed: 2.13 ft at 3:00PM Oct 29, 2014Observed: 2.12 ft at 3:15PM Oct 29, 2014Observed: 2.12 ft at 3:30PM Oct 29, 2014Observed: 2.12 ft at 3:45PM Oct 29, 2014Observed: 2.11 ft at 4:00PM Oct 29, 2014Observed: 2.11 ft at 4:15PM Oct 29, 2014Observed: 1.99 ft at 10:30AM Oct 30, 2014Observed: 1.99 ft at 10:45AM Oct 30, 2014Observed: 2 ft at 11:00AM Oct 30, 2014Observed: 2 ft at 11:15AM Oct 30, 2014Observed: 2 ft at 11:30AM Oct 30, 2014Observed: 2.01 ft at 11:45AM Oct 30, 2014Observed: 2.01 ft at 12:00PM Oct 30, 2014Observed: 2.01 ft at 12:15PM Oct 30, 2014Observed: 2.03 ft at 12:30PM Oct 30, 2014Observed: 2.04 ft at 12:45PM Oct 30, 2014Observed: 2.05 ft at 1:00PM Oct 30, 2014Observed: 2.04 ft at 1:15PM Oct 30, 2014Observed: 2.06 ft at 1:30PM Oct 30, 2014Observed: 2.07 ft at 1:45PM Oct 30, 2014Observed: 2.07 ft at 2:00PM Oct 30, 2014Observed: 2.07 ft at 2:15PM Oct 30, 2014Observed: 2.07 ft at 2:30PM Oct 30, 2014Observed: 2.09 ft at 2:45PM Oct 30, 2014Observed: 2.09 ft at 3:00PM Oct 30, 2014Observed: 2.1 ft at 3:15PM Oct 30, 2014Observed: 2.1 ft at 3:30PM Oct 30, 2014Observed: 2.1 ft at 3:45PM Oct 30, 2014Observed: 2.1 ft at 4:00PM Oct 30, 2014Observed: 2.1 ft at 4:15PM Oct 30, 2014Observed: 2.11 ft at 4:30PM Oct 30, 2014Observed: 2.11 ft at 4:45PM Oct 30, 2014Observed: 2.11 ft at 5:00PM Oct 30, 2014Observed: 2.11 ft at 5:15PM Oct 30, 2014Observed: 2.11 ft at 5:30PM Oct 30, 2014Observed: 2.11 ft at 5:45PM Oct 30, 2014Observed: 2.1 ft at 6:00PM Oct 30, 2014Observed: 2.11 ft at 6:15PM Oct 30, 2014Highest Forecast: 2.1 ft 7:00PM Oct 30, 2014Highest Forecast: 2.1 ft 1:00AM Oct 31, 2014Highest Forecast: 2.1 ft 7:00AM Oct 31, 2014Highest Forecast: 2.1 ft 1:00PM Oct 31, 2014Highest Forecast: 2.1 ft 7:00PM Oct 31, 2014Highest Forecast: 2.1 ft 1:00AM Nov 01, 2014Highest Forecast: 2.1 ft 7:00AM Nov 01, 2014Highest Forecast: 2.1 ft 1:00PM Nov 01, 2014Highest Forecast: 2.1 ft 7:00PM Nov 01, 2014Highest Forecast: 2.1 ft 1:00AM Nov 02, 2014Highest Forecast: 2.1 ft 6:00AM Nov 02, 2014Highest Forecast: 2.1 ft 12:00PM Nov 02, 2014Highest Forecast: 2.1 ft 6:00PM Nov 02, 2014Forecast: 2 ft 12:00AM Nov 03, 2014Forecast: 2 ft 6:00AM Nov 03, 2014Forecast: 2 ft 12:00PM Nov 03, 2014Forecast: 2 ft 6:00PM Nov 03, 2014Forecast: 2 ft 12:00AM Nov 04, 2014Forecast: 2 ft 6:00AM Nov 04, 2014USGS--Water Resources of the United StatesMRML1(plotting HGIRG) Graph Created (6:50PM Oct 30, 2014)ObservedForecast (issued 9:32AM Oct 30)Latest observed value: 2.11 ft at 6:15 PM CDT 30-Oct-2014. Flood Stage is 4 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the Mermentau River at Mermentau are issued routinely year-round.
Return to Area Map
Upstream Locations Upstream Gauge
Flood Categories (in feet)
Major Flood Stage:8
Moderate Flood Stage:6
Flood Stage:4
Action Stage:4

Historical Crests
(1) 14.50 ft on 08/07/1940
(2) 13.36 ft on 05/23/1953
(3) 11.06 ft on 02/10/1955
(4) 10.97 ft on 11/02/1985
(5) 10.56 ft on 01/15/2013
Show More Historical Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -0.94 ft on 07/13/1951
(2) -0.03 ft on 08/15/1985
(3) 0.06 ft on 11/08/1990
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:16
KML Image
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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
16 Between 16 and 17 ft, flood waters reach the gauge over the mermentau river.
15.1 Between 15.1 and 16.0 ft, flood waters reach the base of the southern pacific railroad bridge east of mermentau across an unnamed tributary.
14.3 The river is at its flood of record. Widespread major to catastrophic flooding will occur.
13.4 The river is near its 100 year flood level. Most of the community of mermentau is inundated with flood waters.
13.3 Water reaches the roadway of the of u.S. 90 bridge east of mermentau.
11.9 Flood waters reach the roadway on the Field Road bridge east of mermentau.
9.5 Widespread major flooding will occur with residential flooding in and around mermentau to the lake arthur area. Numerous roads are inundated across a large area including u.S. 90, la 3166, la 1126, and la 92.
9 Some residential flooding in and around mermentau will occur. U.S. 90 west of mermentau is closed. Operations at the shipyards are affected. Roads in the mermentau cove area are flooded and impassable. Some residences are subject to flooding along the river near lake arthur.
8.5 Some residential flooding in mermentau will occur. Operations at leevac shipyard can be affected. U.S. Highway 90 west of mermentau is flooded and subject to being closed.
7.5 Water is on the roadway of the Field Road bridge in the southeast part of mermentau.
6.2 The water reaches the roadway of the 13th Street bridge in the southern portion of mermentau.
6 Flooding of the shipyard begins. Portions of castex landing, la 3166, become flooded and impassable.
5.5 A few recreational camps and residences are subject to flooding.
4 Minor lowland flooding near the river will occur.
About This Location Collapse

Latitude: 30.190000° N, Longitude: 92.590556° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 4 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 -0.58 ft 3.42 ft 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:

Resources Collapse
Hydrologic Resources Additional Resources
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
Lake Charles Weather Forecast Office
500 Airport Boulevard
Lake Charles, LA 70607
(337) 477-5285
Ask Questions/Webmaster
Page last modified: 27-Aug-2014 7:11 PM
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities