Metadata for Chesapeake Bay at Havre de Grace (HDGM2)

About This Location

Latitude: 39.537778° N, Longitude: 76.089722° 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)
Elevation
(gauge height = flood stage)
Elevation information source
NAVD88 -1.03 Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 -0.17 Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL -1.18 Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Other Real-time and/or Archive Data Sources:
U.S. Geological Survey (USGS) Data and Site Info for Havre de Grace

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