Global Lakes and Wetlands Database(eng) - Revision history

Admin at 09:36, 24 April 2020

2020-04-24T09:36:37Z

Admin at 08:45, 24 April 2020

2020-04-24T08:45:04Z

Admin at 21:39, 17 November 2018

2018-11-17T21:39:24Z

Admin at 21:37, 17 November 2018

2018-11-17T21:37:11Z

Admin: Created page with " [Home] - [Static Layers] {| class="wikitable" |- |style="background-color: orange;" |Layer name |style="background-color: orange;"|Globa..."

2018-11-17T21:36:52Z

Created page with " [Home] - [Static Layers] {| class="wikitable" |- |style="background-color: orange;" |Layer name |style="background-color: orange;"|Globa..."

New page

[[User Guide | [Home]]] - [[Static Layers | [Static Layers]]]

{| class="wikitable"
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|style="background-color: orange;" |Layer name
|style="background-color: orange;"|Global Lakes and Wetlands Database
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|Tag
|Basic
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|Folder
|
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|Source
|[v WWF]
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|Description
|Drawing upon a variety of existing maps, data and information, WWF and the Center for Environmental Systems Research, University of Kassel, Germany created the Global Lakes and Wetlands Database (GLWD). The combination of best available sources for lakes and wetlands on a global scale (1:1 to 1:3 million resolution), and the application of GIS functionality enabled the generation of a database which focuses in three coordinated levels on (1) large lakes and reservoirs, (2) smaller water bodies, and (3) wetlands.
Level 1 (GLWD-1) comprises the 3067 largest lakes (area ≥ 50 km2) and 654 largest reservoirs (storage capacity ≥ 0.5 km3) worldwide, and includes extensive attribute data.
Level 2 (GLWD-2) comprises permanent open water bodies with a surface area ≥ 0.1 km2 excluding the water bodies contained in GLWD-1.
The approximately 250,000 polygons of GLWD-2 are attributed as lakes, reservoirs and rivers. Level 3 (GLWD-3) comprises lakes, reservoirs, rivers and different wetland types in the form of a global raster map at 30-second resolution. Access Level 3 data

For GLWD-3, the polygons of GLWD-1 and GLWD-2 were combined with additional information on the maximum extents and types of wetlands. Class ‘lake’ in both GLWD-2 and GLWD-3 also includes man-made reservoirs, as only the largest reservoirs have been distinguished from natural lakes.<br>

More info at: [https://www.worldwildlife.org/pages/global-lakes-and-wetlands-database Global Lakes and Wetlands Database webpage]

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|Screenshot
|[[File:all_globlakes.JPG|1000px|thumb|centre|]]
|[[File:all_globlakes_leg.JPG|600px|thumb|centre|]]
|}

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[[User Guide | [Home]]] - [[Static Layers| [Static Layers]]]

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 |-
 |Source
-|[https://www.worldwildlife.org WWF]
+|[http://www.worldwildlife.org/pages/hydrosheds WWF/USGS]
 |-
 |Description
@@ Line 24: / Line 24: @@
 For GLWD-3, the polygons of GLWD-1 and GLWD-2 were combined with additional information on the maximum extents and types of wetlands. Class ‘lake’ in both GLWD-2 and GLWD-3 also includes man-made reservoirs, as only the largest reservoirs have been distinguished from natural lakes.<br>
-More info at: [https://www.worldwildlife.org/pages/global-lakes-and-wetlands-database Global Lakes and Wetlands Database webpage]
+More info at: [https://www.worldwildlife.org/pages/global-lakes-and-wetlands-database HydroSHEDS]
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 |Screenshot
 |[[File:all_globlakes.JPG|1000px|thumb|centre|]]
-|[[File:all_globlakes_leg.JPG|600px|thumb|centre|]]
+|[[File:all_globlakes_leg2.JPG|600px|thumb|centre|]]
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@@ Line 20: / Line 20: @@
 Level 1 (GLWD-1) comprises the 3067 largest lakes (area ≥ 50 km2) and 654 largest reservoirs (storage capacity ≥ 0.5 km3) worldwide, and includes extensive attribute data.
 Level 2 (GLWD-2) comprises permanent open water bodies with a surface area ≥ 0.1 km2 excluding the water bodies contained in GLWD-1.
-The approximately 250,000 polygons of GLWD-2 are attributed as lakes, reservoirs and rivers. Level 3 (GLWD-3) comprises lakes, reservoirs, rivers and different wetland types in the form of a global raster map at 30-second resolution. Access Level 3 data
+The approximately 250,000 polygons of GLWD-2 are attributed as lakes, reservoirs and rivers. Level 3 (GLWD-3) comprises lakes, reservoirs, rivers and different wetland types in the form of a global raster map at 30-second resolution.
 For GLWD-3, the polygons of GLWD-1 and GLWD-2 were combined with additional information on the maximum extents and types of wetlands. Class ‘lake’ in both GLWD-2 and GLWD-3 also includes man-made reservoirs, as only the largest reservoirs have been distinguished from natural lakes.<br>