EFG F3.1 Large reservoirs – current maps

F3. Artificial wetlands biome

F3
valid
Published

June 7, 2024

This page provides information about the valid indicative distribution map for the ecosystem functional group F3.1 Large reservoirs. For older or alternative maps, see here.

Methods

Here is the methods summary for Map code and version: F3.1.web.orig v1.0.

Point locations of large reservoirs were obtained from water bodies tagged as ‘reservoirs’ in “reservoirs” in vector layers GLWD1 and GLWD2 of Lehner & Döll (2004). These were mapped with a spatial buffer of 15 minutes, enabling reservoirs to be represented in 0.5 degree grid cells.

Datasets

GLWD-2004 (Lehner B, Döll P 2004):

Source of validated distribution records. Resolution: ca. 1km2, static. Accuracy evaluation: quantitative (subsets).

dataset url
GLWD-2004 https://www.worldwildlife.org/pages/global-lakes-and-wetlands-database

Processing

Processing steps used in this map are: Reclassification :: Thresholds :: Buffering.

Map evaluation

This map is considered to be a Fine quality map based on the following characteristics:

Concept alignment is Direct,specific.

Ground observations are yes.

The accuracy evaluation Quantitative accuracy assessment,documented,quantitative.

How to use the data

Available files

Following maps are considered current and valid indicative distribution maps for this ecosystem functional group. Web navigation maps are optimised for use in webapps, but they have similar methods and differ only in details of format and processing.

  • Web navigation (code: F3.1.web.orig, version v1.0)
  • Indicative Map (code: F3.1.WM.nwx, version v1.0)

You can download geospatial data for this map from the following sources:

F3.1.web.orig (v1.0): GitHub repository :: Google Cloud bucket :: Zenodo repository (bundle of maps) :: Zenodo repository (EFG map) :: GitHub repository :: GitHub repository :: Earth Engine assets

F3.1.WM.nwx (v1.0): Google Cloud bucket :: Mapbox tileset

Note that you need to login to some services like mapbox or earthengine, and in some cases you also need to request access to the files.

License information

Indicative maps have been released with a Creative Commons Attribution 4.0 International license.

Datasets used to create this map have similar licenses, but please check the license information below.

dataset license_info
GLWD-2004 The data is available for free download for non-commercial scientific :: conservation and educational purposes

References

References used in this version of the maps.

  • Lehner B, Döll P (2004) Development and validation of a global database of lakes,reservoirs and wetlands Journal of Hydrology 296: 1–22
  • Messager, M.L., Lehner, B., Grill, G., Nedeva, I., Schmitt, O. (2016) Estimating the volume and age of water stored in global lakes using a geo-statistical approach Nature Communications 13603 DOI:10.1038/ncomms13603
  • Mulligan, M., van Soesbergen, A. and Saenz, L. (2020) GOODD, a global dataset of more than 38,000 georeferenced dams Scientific Data 7 (31) DOI:10.1038/s41597-020-0362-5