EFG F1.7 Large rivers – current maps

F1. Rivers and streams biome

Published

June 7, 2024

This page provides information about the valid indicative distribution map for the ecosystem functional group F1.7 Large lowland rivers. For older or alternative maps, see here.

Methods

Here is the methods summary for Map code and version: F1.7.web.orig v2.0.

The distribution of large lowland rivers was taken from the Global River Classification database (Ouellet Dallaire et al. 2018). Reaches with flow > 10,000 m3/s were mapped with a 20 km buffer as major occurrences, clipped to exclude those with seasonal freezing temperatures (mean temperature of coldest quarter <0°C).

Datasets

GloRIC-1.0 (Ouellet Dallaire et al. 2018):

Source of database of aggregated envrironmental indicators. Resolution: <1km2, static. Accuracy evaluation: unsupervised classification.

dataset url
GloRIC-1.0 https://www.hydrosheds.org/page/gloric

Processing

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

Map evaluation

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

Concept alignment is Direct,specific.

Ground observations are yes.

The accuracy evaluation Compiled from reputable source data,unsupervised classification.

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: F1.7.web.orig, version v2.0)
  • Indicative Map (code: F1.7.IM.orig, version v2.0)

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

F1.7.web.orig (v2.0): GitHub repository :: Google Cloud bucket :: Zenodo repository (bundle of maps) :: Zenodo repository (EFG map) :: GitHub repository :: GitHub repository :: Earth Engine assets

F1.7.IM.orig (v2.0): Google Cloud bucket :: Zenodo repository (bundle of maps)

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
GloRIC-1.0 freely available for scientific; educational and commercial use :: https://data.hydrosheds.org/file/technical-documentation/HydroSHEDS_TechDoc_v1_4.pdf

References

References used in this version of the maps.

  • Ouellet Dallaire, C., Lehner, B., Sayre, R., Thieme, M. (2018): A multidisciplinary framework to derive global river reach classifications at high spatial resolution. Environmental Research Letters 14: 024003. DOI: 10.1088/1748-9326/aad8e9