Global River Classification (GloRiC)¶
The Global River Classification (GloRiC) provides river types and sub-classifications for all river reaches contained in the HydroRIVERS database. GloRiC has been developed by utilizing the river network delineation of HydroRIVERS combined with the hydro-enviromental characteristics from the HydroATLAS database and auxiliary information.
Version 1.0 of GloRiC provides a hydrologic, physio-climatic, and geomorphic sub-classification, as well as a combined river type for every river reach, resulting in a total of 127 river reach types. It also offers a k-means statistical clustering of the reaches into 30 groups. The dataset comprises 8.5 million river reaches with a total length of 35.9 million km.
You can find overall technical documentation here and technical information for GloRiC Canada here
Preprocessing¶
Besides the global version of GloRiC, there is also a regional version for Canada available, GloRiC-Canada, which follows the same classification principles but with Canada-specific adaptations. GloRiC-Canada categorizes all river reaches of Canada into 23 types.
Disclaimer: Whole or parts of the dataset description were provided by the author(s) or their works.
Citation¶
Ouellet Dallaire, C., Lehner, B., Sayre, R., Thieme, M. (2019). A multidisciplinary framework to derive global river reach classifications at high
spatial resolution. Environmental Research Letters, 14(2): 024003. https://doi.org/10.1088/1748-9326/aad8e9
Ouellet Dallaire, C., Lehner, B., Creed, I. (2020): Multidisciplinary classification of Canadian river reaches to support the sustainable management
of freshwater systems. Canadian Journal of Fisheries and Aquatic Sciences, 77(2): 326–341. https://doi.org/10.1139/cjfas-2018-0284
Earth Engine Snippet¶
var gloric = ee.FeatureCollection("projects/sat-io/open-datasets/GloRiC/GloRiC_v10");
var gloric_canada = ee.FeatureCollection("projects/sat-io/open-datasets/GloRiC/GloRiC_Canada_v10");
| Column | Description |
|---|---|
| Reach_ID | Unique identifier (ID) for every river reach Note: the first digit identifies the region/continent: 1: Africa; 2: Europe; 3: Siberia; 4: Asia; 5: Australia & Oceania; 6: South America; 7: North America; 8: American Arctic; 9: Greenland |
| Next_down | ID of next downstream river reach Note: the next downstream ID can be used to trace the river network by navigating from reach to reach. Values of 0 indicate reaches with no further downstream connection (pour points). |
| Length_km | Length of individual river reach [km] |
| Log_Q_avg | Log-10 of long-term average discharge [m3 /sec] |
| Log_Q_var | Log-10 of flow regime variability |
| Class_hydr | Classes of hydrologic sub-classification (15 classes) |
| Temp_min | Long-term average of the minimum air temperature of the coldest month [degrees Celsius] |
| CMI_indx | Climate Moisture Index |
| Log_elev | Log-10 of average elevation of the reach [meters a.s.l.] |
| Class_phys | Classes of physio-climatic sub-classification (24 classes) |
| Lake_wet | Lake or wetland influence [binary: 0 = no; 1 = yes] |
| Stream_pow | Total stream power [kW/m2 ] |
| Class_geom | Classes of geomorphic sub-classification (127 classes) |
| Reach_type | Combined river reach type (4 classes) |
| Kmeans_30 | Classes of k-means statistical clustering (30 classes) |
License¶
The data is licensed under a Creative Commons Attribution 4.0 International License (see section 4). By downloading and using the data the user agrees to the terms and conditions of this license.
Created by: Ouellet Dallaire, C., Lehner, B., Sayre, R., Thieme, M. & Schmitt, O
Curated by: Samapriya Roy
Keywords: water,hydrology, rivers, discharge, depth, volume, area, gloric
Last updated: 2022-07-09
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