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Sustainable surface water storage development pathways and acceptable limits for river basins

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Title Sustainable surface water storage development pathways and acceptable limits for river basins
 
Creator Eriyagama, Nishadi
Smakhtin, V.
Udamulla, L.
 
Subject surface water
water storage
water supply
water yield
river basin management
reservoirs
planning
sustainability
strategies
environmental flows
water extraction
runoff
dams
precipitation
case studies
models
 
Description This paper addresses the questions of acceptable upper limits for storage development and how best to deploy storage capacity in the long-term planning of built surface water storage in river basins. Storage-yield curves are used to establish sustainable storage development pathways and limits for a basin under a range of environmental flow release scenarios. Optimal storage distribution at a sub-basin level, which complies with an identified storage development pathway, can also be estimated. Two new indices are introduced—Water Supply Sustainability and Environmental Flow Sustainability—to help decide which pathways and management strategies are the most appropriate for a basin. Average pathways and conservative and maximum storage limits are illustrated for two example basins. Conservative and maximum withdrawal limits from storage are in the range of 45–50% and 60–65% of the mean annual runoff. The approach can compare the current level of basin storage with an identified pathway and indicate which parts of a basin are over- or under-exploited. A global storage–yield–reliability relationship may also be developed using statistics of annual basin precipitation to facilitate water resource planning in ungauged basins.
 
Date 2021-02-28
2021-03-31T10:44:38Z
2021-03-31T10:44:38Z
 
Type Journal Article
 
Identifier Eriyagama, Nishadi; Smakhtin, V.; Udamulla, L. 2021. Sustainable surface water storage development pathways and acceptable limits for river basins. Water, 13(5):645. [doi: https://doi.org/10.3390/w13050645]
2073-4441
https://hdl.handle.net/10568/113174
https://www.mdpi.com/2073-4441/13/5/645/pdf
https://doi.org/10.3390/w13050645
H050319
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format 13(5):645
 
Publisher MDPI AG
 
Source Water