Metadata for Upper Machodoc Creek near Dahlgren (IN MLLW) (NCDV2)

About This Location

Latitude: 38.319722° N, Longitude: 77.036667° W, Horizontal Datum: NAD83

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 3.5 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 -1.02 2.48 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 -0.94 2.56 Older USGS topographic maps, MSL benchmarks
Other Not Available 3.5 MLLW

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