Your search found 2 records
1 Kumar, N.; Tischbein, B.; Kusche, J.; Laux, P.; Beg, M. K.; Bogardi, J. J. 2017. Impact of climate change on water resources of upper Kharun catchment in Chhattisgarh, India. Journal of Hydrology: Regional Studies, 13:189-207. [doi: https://doi.org/10.1016/j.ejrh.2017.07.008]
Climate change ; Forecasting ; Water resources ; Water balance ; Catchment areas ; Hydrology ; Models ; Groundwater ; Precipitation ; Rainfall-runoff relationships ; Temperature ; Surface runoff ; Discharges ; Percolation ; Land use ; Soils / India / Chhattisgarh / Upper Kharun Catchment
(Location: IWMI HQ Call no: e-copy only Record No: H048326)
http://www.sciencedirect.com/science/article/pii/S221458181630177X/pdfft?md5=b3f01d282a63aa0e5c3b17f5f7e21645&pid=1-s2.0-S221458181630177X-main.pdf
https://vlibrary.iwmi.org/pdf/H048326.pdf
https://vlibrary.iwmi.org/pdf/H048326.pdf
(1.78 MB) (1.78 MB)
Study region: The Upper Kharun Catchment (UKC) is one of the most important, economically sound and highly populated watersheds of Chhattisgarh state in India. The inhabitants strongly depend on monsoon and are severely prone to water stress.
Study focus: This research aims to assess the impact of climate change on water balance components.
New hydrological insights for the region: The station-level bias-corrected PRECIS (Providing REgional Climates for Impact Studies) projections generally show increasing trends for annual rainfall and temperature. Hydrological simulations, performed by SWAT (Soil and Water Assessment Tool), indicate over-proportional runoff-rainfall and under-proportional percolationrainfall relationships. Simulated annual discharge for 2020s will decrease by 2.9% on average (with a decrease of 25.9% for q1 to an increase by 23.6% for q14); for 2050s an average increase by 12.4% (17.6% decrease for q1 to 39.4% increase for q0); for 2080s an average increase of 39.5% (16.3% increase for q1 to an increase of 63.7% for q0). Respective ranges on percolation: for 2020s an average decrease by 0.8% (12.8% decrease for q1 to an increase of 8.7% for q14); for 2050s an average increase by 2.5% (10.3% decrease for q1 to 15.4% increase for q0); for 2080s an average increase by 7.5% (0.3% decrease for q1 to 13.7% increase for q0). These over-and under-proportional relationships indicate future enhancement of floods and question sufficiency of groundwater recharge.
Study focus: This research aims to assess the impact of climate change on water balance components.
New hydrological insights for the region: The station-level bias-corrected PRECIS (Providing REgional Climates for Impact Studies) projections generally show increasing trends for annual rainfall and temperature. Hydrological simulations, performed by SWAT (Soil and Water Assessment Tool), indicate over-proportional runoff-rainfall and under-proportional percolationrainfall relationships. Simulated annual discharge for 2020s will decrease by 2.9% on average (with a decrease of 25.9% for q1 to an increase by 23.6% for q14); for 2050s an average increase by 12.4% (17.6% decrease for q1 to 39.4% increase for q0); for 2080s an average increase of 39.5% (16.3% increase for q1 to an increase of 63.7% for q0). Respective ranges on percolation: for 2020s an average decrease by 0.8% (12.8% decrease for q1 to an increase of 8.7% for q14); for 2050s an average increase by 2.5% (10.3% decrease for q1 to 15.4% increase for q0); for 2080s an average increase by 7.5% (0.3% decrease for q1 to 13.7% increase for q0). These over-and under-proportional relationships indicate future enhancement of floods and question sufficiency of groundwater recharge.
2 Kumar, N.; Tischbein, B.; Beg, M. K.; Bogardi, J. J. 2018. Spatio-temporal analysis of irrigation infrastructure development and long-term changes in irrigated areas in upper Kharun Catchment, Chhattisgarh, India. Agricultural Water Management, 197:158-169. [doi: https://doi.org/10.1016/j.agwat.2017.11.022]
Irrigation systems ; Irrigation canals ; Infrastructure ; Groundwater irrigation ; Irrigation water ; Irrigated land ; Cropping patterns ; Water demand ; Spatial planning ; Mapping ; Satellite imagery ; Villages ; Catchment areas / India / Chhattisgarh / Upper Kharun Catchment
(Location: IWMI HQ Call no: e-copy only Record No: H048525)
(4.39 MB)
The Upper Kharun Catchment (UKC), which is part of the new State Chhattisgarh formed in 2000, features considerable population growth, expansion of urban areas and dynamic changes in irrigation infrastructure as well as irrigation practices (spatial extension, temporal intensification, increasing use of groundwater as source) for meeting the increasing food demand. Water intensive rice is the major crop of the area. UKC has a comprehensive canal irrigation system which provides the link to water supply from reservoirs fed from areas outside the UKC. However, water provision for irrigation via the canal system for irrigation is restricted to only post-monsoon season. As a consequence, groundwater remains the only source of irrigation water in summer and winter seasons. Improved electricity facilities and subsidy on groundwater pumping have triggered an enormous increase in groundwater withdrawals. Remote sensing satellite images along with ground observed data were used in this study to spatially identify the areas with canal and groundwater irrigation. Results reveal that in 2011, around 50% of the area of the UKC benefits from canal irrigation, whereas 29.8% area is irrigated by groundwater. Around 103 villages in the UKC have no canal infrastructures. 216 villages in UKC are considered as ‘hotspot areas’ because of high groundwater withdrawal (irrigated area exceeding 75 ha per village), There has been threefold increase in groundwater irrigated area in UKC between 1991 and 2011. The upward trend of groundwater use indicates an alarming situation towards over-exploitation and creates the need to provide and analyze data on the use of groundwater resources in the area in order to detect past and to estimate future trends referring to groundwater withdrawals. These data are a prerequisite for enabling careful and foresightful management of groundwater resources especially at spatially identified hotspot areas towards ensuring sustainable management of this resource.
Powered by DB/Text WebPublisher, from
