Hydrography Data - Page 2

Show a mass of rock or coral which either reaches close to the sea surface or is exposed at low tide, posing a hazard to navigation.

Show an excavation drilled or dug into the ground (for example: the sea bed) for the extraction of liquids and/or gases.

Show a substantial lake-like body of water impounded by a dam.

Shows an enclosed channel for carrying a watercourse (for example: a stream, a sewer, or a drain) under a route (for example: a road, a railway, or an embankment). Usually the construction of the route is unaffected.

Show on a shore, the area on which the waves break and over which shore debris (for example: sand, shingle, and/or pebbles) accumulate. A beach includes backshore and foreshore. See also Features: 'Nearshore', 'Backshore', and 'Foreshore'.

Shows a structure that protects a waterbody region (for example: a shore, a harbour, and/or an anchorage) from water waves by preventing them from reaching the protected region or reducing their magnitude.

Shows a barrier constructed to hold back water and raise its level to form a reservoir or to prevent flooding.

Show an embankment or wall for protection against waves or tidal action along a shore or water front.

Show a vertically decending part of a watercourse where it falls from a height (for example: over a rock or a precipice).

Shows a barrier constructed to hold back water and raise its level to form a reservoir or to prevent flooding.