Water surfaces (SVAR2012)

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Dataset information

Country of origin
Updated
Created
2013.10.23
Available languages
Swedish
Keywords
dataportal.se, SMHI - Öppna Data, observation, geodata.se, hydrografi, öppna data, hydrologi
Quality scoring
175

Dataset description

Water surfaces consist of polygons representing lakes, lakes without visible outlet, watercourses, islands, sankland and other water surfaces such as small artificial ponds that are not included in the maritime register. Watercourses of sufficient size are represented by polygon instead of line only. The polygons are called watercourse surfaces; A lake is a more or less permanently larger accumulation of water without significant current speed in a sink in the earth’s surface. A lake usually has an outlet, but there are lakes with more outlets and those that have no outlet. Not all lakes in the maritime register are represented as water surfaces. EU_CD is an attribute coordinated with water authorities for the identification of: water bodies or other water. A water body is a delimited and significant the presence of surface or groundwater, in this case surface water; Under the WFD, it is defined as: the minimum quantity for the description and assessment of water, excluding groundwater. A 2.2 the surface water body belongs to a special type, has a specific water quality and is deemed to be exposed to a specified level of impact. Some smaller lakes that form part of the district’s basic structure and environmental monitoring but not meeting the selection criteria to be classified as water body is called: “other water” and also has an EU_CD. However, these are encoded by N in column VF and are: that means no water body. Water surfaces other than water bodies have EU_CD starting with the characters “NW”.
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