PIANC Smart Rivers 2022

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Abstract : *(250~1000 words)

Waters are important parts of the national land space, and the Zhejiang Waters Protection Measures, which came into effect on May 1, 2019, redefines the scope of waters and puts forward higher requirements for water space protection.

In order to promote the digital transformation of water supervision in Zhejiang Province, Maintain and play an important role in flood control, drainage, water supply, ecology and other aspects of the water, comprehensively figure out the basic information and spatial data of water, established a water information database by applying RS, GIS and GPS technology, features dynamic updates. Provided a basis for enhancing water protection and efficient management.

The work of water digitization includes field mapping, data processing, spatial analysis, data importing into database, etc.

The working base map includes 1:2000 topographic map, 0.2m precision satellite image map, the third national land survey data. The elevation datum is 1985 National Elevation Datum (Phase II). The Plane coordinate system is China Geodetic Coordinate System 2000(cgcs 2000)  with  Gauss Kruger projection.

This database contains 7 types of waters: rivers, reservoirs, lakes, Mountain ponds, artificial waterways and other waters. Each type of water datasets includes management boundary line, water surface line, and waterfront line. Management boundary line is the outer boundary of the management area set to protect the function of the water space. Water surface line is the outer edge of the water surface corresponding to the normal water level of rivers, lakes and other waters. Waterfront line is the outer edge of the functional area carrying the water.

Water base information contains: Water name, code, location, basin, function, length, area, volume, etc.

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