Tag:water=lake
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 water = lake
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| Description |
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A natural or semi-natural body of relatively still fresh or salt water which is surrounded by land.  
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| Group: water |
| Used on these elements |
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| Requires |
| Useful combination |
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| See also |
Status: approved
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| Tools for this tag |
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Lake: a natural or semi-natural body of relatively still fresh or salt water, localized in a basin that is surrounded by land. Artificially created lakes should instead be tagged as water=basin, water=reservoir, or water=pond.
How to map
Draw a closed way to form an area. Add water=lake + natural=water.
Tags used in combination
- name=* - The officially designated name.
- intermittent=yes - Intermittent lakes (which disappear seasonally).
- salt=yes - For salt lakes.
Islands
Lakes with one or more islands in them should be mapped as multipolygons.
First, map the island(s).
- for each island, draw the outline
of the island by tracing its shoreline - add place=island or if it is very small place=islet
- optional landuse=* can be added. For example, if the island is wooded, add landuse=forest or natural=wood.
- if the island has a name=* of its own, add it here too
Next, map the lake outline.
- draw a closed way following the lake's shoreline
- do not add any tags to this way – the lake's tags will instead be put on the parent relation
Finally, create a type=multipolygon relation.
- All tags, including natural=water and water=lake should be on the relation.
- Add the lake outline as a member with role outer
- add the island(s) as members with role inner
See also
- water=oxbow - a U-shaped lake that forms when a meandering river changes course
- water=pond - a body of standing water, man-made in most cases, that is usually smaller than a lake
- water=lagoon - a body of shallow sea water or brackish water separated from the sea by a barrier
- water=basin - An area of land artificially graded to hold water
- water=reservoir - an artificial lake or reservoir formed by a dam across a natural water course or depression
- OSM Inspector Water