Reallocating water from canal irrigation for environmental flows: benefits forgone in the Upper Ganga Basin in India
This paper assesses the potential loss of irrigation benefits in reallocating water from irrigation to meet requirements for environmental flows (e-flows) in the Upper Ganga Basin (UGB) in northern India. The minimum requirement for e-flows in the UGB is 32 billion cubic meters (BCM), or 42 % of the...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Springer
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/34590 |
| _version_ | 1855539917379076096 |
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| author | Amarasinghe, Upali A. Smakhtin, Vladimir U. Bharati, Luna Malik, Ravinder Paul Singh |
| author_browse | Amarasinghe, Upali A. Bharati, Luna Malik, Ravinder Paul Singh Smakhtin, Vladimir U. |
| author_facet | Amarasinghe, Upali A. Smakhtin, Vladimir U. Bharati, Luna Malik, Ravinder Paul Singh |
| author_sort | Amarasinghe, Upali A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | This paper assesses the potential loss of irrigation benefits in reallocating water from irrigation to meet requirements for environmental flows (e-flows) in the Upper Ganga Basin (UGB) in northern India. The minimum requirement for e-flows in the UGB is 32 billion cubic meters (BCM), or 42 % of the mean annual runoff. The current runoff during the low-flow months falls below the minimum requirement for e-flows by 5.1 BCM. Depending on irrigation efficiency, reallocation of 41?51 % of the water from canal irrigation withdrawals can meet this deficit in minimum e-flows. The marginal productivity of canal irrigation consumptive water use (CWU), estimated from a panel regression with data from 32 districts from 1991 to 2004, assesses the potential loss of benefits in diverting water away from crop production. In the UGB, canal irrigation contributes to only 8 % of the total CWU of 56 BCM, and the marginal productivity of canal irrigation CWU across districts is also very low, with a median of 0.03 USD/m3. Therefore, at present, the loss of benefits is only 1.2?1.6 % of the gross value of crop production. This loss of benefits can be overcome with an increase in irrigation efficiency or marginal productivity. |
| format | Journal Article |
| id | CGSpace34590 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace345902025-03-11T09:50:20Z Reallocating water from canal irrigation for environmental flows: benefits forgone in the Upper Ganga Basin in India Amarasinghe, Upali A. Smakhtin, Vladimir U. Bharati, Luna Malik, Ravinder Paul Singh water resources resource allocation irrigation water use water allocation canal irrigation irrigation efficiency environmental flows river basins simulation models This paper assesses the potential loss of irrigation benefits in reallocating water from irrigation to meet requirements for environmental flows (e-flows) in the Upper Ganga Basin (UGB) in northern India. The minimum requirement for e-flows in the UGB is 32 billion cubic meters (BCM), or 42 % of the mean annual runoff. The current runoff during the low-flow months falls below the minimum requirement for e-flows by 5.1 BCM. Depending on irrigation efficiency, reallocation of 41?51 % of the water from canal irrigation withdrawals can meet this deficit in minimum e-flows. The marginal productivity of canal irrigation consumptive water use (CWU), estimated from a panel regression with data from 32 districts from 1991 to 2004, assesses the potential loss of benefits in diverting water away from crop production. In the UGB, canal irrigation contributes to only 8 % of the total CWU of 56 BCM, and the marginal productivity of canal irrigation CWU across districts is also very low, with a median of 0.03 USD/m3. Therefore, at present, the loss of benefits is only 1.2?1.6 % of the gross value of crop production. This loss of benefits can be overcome with an increase in irrigation efficiency or marginal productivity. 2013-04 2013-11-21T05:04:47Z 2014-02-02T16:39:50Z 2013-11-21T05:04:47Z 2014-02-02T16:39:50Z Journal Article https://hdl.handle.net/10568/34590 en Limited Access Springer Amarasinghe, U.A., Smakhtin, V., Bharati, L. et al. Reallocating water from canal irrigation for environmental flows: benefits forgone in the Upper Ganga Basin in India. Environ Dev Sustain 15, 385–405 (2013). https://doi.org/10.1007/s10668-012-9385-1 |
| spellingShingle | water resources resource allocation irrigation water use water allocation canal irrigation irrigation efficiency environmental flows river basins simulation models Amarasinghe, Upali A. Smakhtin, Vladimir U. Bharati, Luna Malik, Ravinder Paul Singh Reallocating water from canal irrigation for environmental flows: benefits forgone in the Upper Ganga Basin in India |
| title | Reallocating water from canal irrigation for environmental flows: benefits forgone in the Upper Ganga Basin in India |
| title_full | Reallocating water from canal irrigation for environmental flows: benefits forgone in the Upper Ganga Basin in India |
| title_fullStr | Reallocating water from canal irrigation for environmental flows: benefits forgone in the Upper Ganga Basin in India |
| title_full_unstemmed | Reallocating water from canal irrigation for environmental flows: benefits forgone in the Upper Ganga Basin in India |
| title_short | Reallocating water from canal irrigation for environmental flows: benefits forgone in the Upper Ganga Basin in India |
| title_sort | reallocating water from canal irrigation for environmental flows benefits forgone in the upper ganga basin in india |
| topic | water resources resource allocation irrigation water use water allocation canal irrigation irrigation efficiency environmental flows river basins simulation models |
| url | https://hdl.handle.net/10568/34590 |
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