Hydrographic Structures - Lines (HSL)
Coordinate system: 4326 - "WGS 84"Abstract:
Hydrographic structures (lines) represent any features relating to surface water (but does not include waterbodies or rivers) such as dams, dykes, reservoirs, seawalls or wharfs.
Note: In 2012, there was a datum change from NAD83 to WGS84.
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