Vicmap Hydro REST API
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下载链接:
https://researchdata.edu.au/vicmap-hydro-rest-api/1791255
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资源简介:
Vicmap Hydro represents the natural and man-made water resources for Victoria and consists of point, line and polygon vector features in a seamless, networked and topologically structured dataset series. It comprises a basic framework of linear features supplemented by related point and polygon features to value add data for the water networks across the State. Attribute tables classify and describe the real-world features using code lists that can be used for search, discovery and analysis. \r\n\r\nThe following hydrographic features are contained within Vicmap Hydro:\r\nWatercourse (line)- watercourse, connector, channel, drain\r\nWater Area (polygon)- lake, flat, wetland, pondage, watercourse area\r\nWater Area Boundary (line)- shoreline, junction\r\nWater Point (point)- rapids, spring, waterfall, waterbody point\r\nWater Area Fuzzy (polygon) – bay, beach, bend, entrance, inlet, passage, reach, sea\r\nIn inland and coastal areas, point and line features are used to describe various waterline related structures:\r\nWater Structure Line (line)- wharf, marina, offshore platform, breakwater, launching ramp, dam wall, spillway, lock\r\nWater Structure Point (point)- lock, well\r\nWater Structure Area (polygon)- dam batter, spillway\r\nAlong our coastline various features exist which either aid or obstruct local navigation: \r\nNavigation Point (point)- buoy, beacon, rock, wreck\r\nNavigation line (line)- reef ledge\r\nDepiction of coastal environment\r\nFeatures along our coastal environment are best depicted with Vicmap Index which contains Victoria’s state boarders and coastline.\r\nInterpretation of features such as watercourses and sea depend on the following criteria:\r\nThe limit between sea and land ie. coastline is represented by the mean highwater mark (1m below flotsam on the beach) except in areas covered by mangroves where the landward side is adopted. Note: The limit between the shoreline of internal water bodies and land is represented by the full supply level.\r\nThe use of a connector feature ceases when a watercourse area runs into the sea delineated by a junction representing coastline.\r\nCoastal intertidal flats comprised of sand or mud, exposed at low tide form polygon areas which can extend seaward more than 100m or inland.\r\nSmall inlets with a single line stream flowing into them are usually considered part of the sea.\r\nIslands are represented by polygons coded “Island” when they are fully surrounded by sea. \r\n\r\n
提供机构:
data.vic.gov.au



