Metadata for Tide Station (LCH) at Amerada Pass (AMRL1)

About This Location

Latitude: 29.449444° N, Longitude: 91.338056° W, Horizontal Datum: NAD83

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)
(gauge height = flood stage)
Elevation information source
NAVD88 -0.52 3.48 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 -0.80 3.20 ft Older USGS topographic maps, MSL benchmarks
Other Not Available 4 ft Mean Lower Low Water

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