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Table 5

Changes in mean annual river discharge for 29 rivers. DOI: https://doi.org/10.1525/elementa.269.t5

RiverDischargea
(m3 s–1)
Δ dischargeb
(m3 s–1)
Percent change

 
Brahmaputrac 21629 –1369 –6% 
Manas 1014 –743 –73% 
Sankosh 547 –394 –72% 
Raidak 137 –73 –53% 
Torsad 471 –77 –16% 
Jaldhak 404 –82 –20% 
Gangac 11406 –2769 –24% 
Kosi 1806 –415 –23% 
Gandak 1299 –882 –68% 
Ghaghara 2535 –1405 –55% 
Yamuna 792 243 +31% 
Chambal 570 –43 –8% 
Ken 380 –34 –9% 
Betwa 658 19 +3% 
Son 1014 –50 –5% 
Direct offtakese 0 –202  
Hooghly 1014 222 +22% 
Mahanadi 1528 –291 –19% 
Godavari 2842 –257 –9% 
Krishna 359 1 0% 
Penna 17 75 +450% 
Kaveri 156 51 +33% 
Achankovil 33 –18 –56% 
Pamba 121 –2 –1% 
Netravati 336 –6 –2% 
Damanganga 65 –18 –28% 
Par 49 –16 –32% 
Auranga 16 –3 –18% 
Ambica 56 –13 –24% 
Purna 32 –10 –32% 
RiverDischargea
(m3 s–1)
Δ dischargeb
(m3 s–1)
Percent change

 
Brahmaputrac 21629 –1369 –6% 
Manas 1014 –743 –73% 
Sankosh 547 –394 –72% 
Raidak 137 –73 –53% 
Torsad 471 –77 –16% 
Jaldhak 404 –82 –20% 
Gangac 11406 –2769 –24% 
Kosi 1806 –415 –23% 
Gandak 1299 –882 –68% 
Ghaghara 2535 –1405 –55% 
Yamuna 792 243 +31% 
Chambal 570 –43 –8% 
Ken 380 –34 –9% 
Betwa 658 19 +3% 
Son 1014 –50 –5% 
Direct offtakese 0 –202  
Hooghly 1014 222 +22% 
Mahanadi 1528 –291 –19% 
Godavari 2842 –257 –9% 
Krishna 359 1 0% 
Penna 17 75 +450% 
Kaveri 156 51 +33% 
Achankovil 33 –18 –56% 
Pamba 121 –2 –1% 
Netravati 336 –6 –2% 
Damanganga 65 –18 –28% 
Par 49 –16 –32% 
Auranga 16 –3 –18% 
Ambica 56 –13 –24% 
Purna 32 –10 –32% 

a Current river discharge values are taken or calculated from data source indicated in supplementary material. See the annotated database reference list in supplementary materials for details of each value. Depending on data availability, the value may reflect either mean or median annual discharge.

b Change in annual river discharge assumes full implementation of the NRLP. Data sources are as given in Tables 2 and 3 (Dams and canals databases).

c For the Brahmaputra and Ganga rivers, change in annual discharge is also shown for affected tributaries (in italics). The sum of the discharge changes for tributaries is equal to the discharge change for the parent river.

d For the Torsa, only 75% dependable yield (the 1st quartile of discharge) was available.

e “Direct offtakes” reflects the sum of water taken or delivered directly to the Ganga, rather than to/from one of its tributaries.

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