Articles | Volume 24, issue 3
Hydrol. Earth Syst. Sci., 24, 1447–1465, 2020

Special issue: Integration of Earth observations and models for global water...

Hydrol. Earth Syst. Sci., 24, 1447–1465, 2020

Research article 30 Mar 2020

Research article | 30 Mar 2020

Quantification of drainable water storage volumes on landmasses and in river networks based on GRACE and river runoff using a cascaded storage approach – first application on the Amazon

Johannes Riegger

Related subject area

Subject: Global hydrology | Techniques and Approaches: Modelling approaches
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Cited articles

Bredehoeft, J.: Safe yield and the water budget myth, Ground Water, 35, 929–929,, 1997. 
Chen, J. L., Wilson, C. R., Famiglietti, J. S., and Rodell, M.: Attenuation effect on seasonal basin-scale water storage changes from GRACE time-variable gravity, J. Geodesy, 81, 237–245, 2007. 
Getrirana, A., Kumar, S., Girotto, M., and Rodell, M.: River and Floodplains as Key Components of Global Terrestrial Water Storage Variability, Geophys. Res. Lett., 44, 44–50,, 2017a. 
Getirana, A., Peters-Lidard, C., Rodell, M., and Bates, P. D.: Tradoff between cost and accuracy in large-scale surface water dynamic modeling, Water Resour. Res., 53, 4942–4955,, 2017b. 
Short summary
The combined use of GRACE mass anomalies and observed river discharge for the first time allows us to quantify the water storage volumes drainable by gravity on global scales. Modelling of catchment and river network storages in a cascade with different dynamics reveals the time lag between total mass and runoff is caused by a non-zero river network storage. This allows catchment and river network storage volumes to be distinguished and is thus of great importance for water resources management.