Your search found 3 records
1 Rai, S. P.; Wolf, A. T.; Sharma, N. 2017. Hydropolitics and hydropolitical dynamics between India and Nepal: an event-based study. Water Policy, 19(5):791-819. [doi: https://doi.org/10.2166/wp.2017.063]
International waters ; Political aspects ; International cooperation ; Conflicts ; River basin management ; Risk assessment ; Databases ; International agreements ; Water quality ; Water power ; Flood control ; Fisheries ; Navigation ; Economic development ; Irrigation programs ; Infrastructure ; Technology ; Statistical methods / India / Nepal / Ganges Basin / Mahakali Basin / Karnali Basin / Gandak Basin / Kosi Basin
(Location: IWMI HQ Call no: e-copy only Record No: H048401)
(1.31 MB)
India and Nepal not only share common borders and cultures, but also share precious freshwater sources, i.e., rivers. Rivers have been discussed often in the political corridors because they cross international borders, which transform water reserves into a competitive resource and lead to hydropolitical dynamics between riparian countries. Nepal and India are two of the major riparian nations that share the mighty and complex Ganges Basin. The objective here was to study the more-than-a-century-old hydro-diplomacy between India and Nepal, passing through tumultuous political scenarios to understand how water relations have been shaped and reshaped with time. For this, a database of historical individual events/actions of water cooperation and conflict from 1874 to 2014 was compiled. These events/actions were ranked by intensity, using precise definitions of conflict and cooperation as suggested by the Transboundary Freshwater Dispute Database under the Basins at Risk project formulated at Oregon State University. Statistical analyses indicated cooperative events greatly outnumbered conflictive events. Out of 351 events, only 4% were conflictive, 92% were cooperative, and the remaining 4% were neutral. The study revealed an abundance of cooperative events; however, when seen through the lens of conflict-cooperation levels, the findings indicated a moderately positive cooperation, without much concrete action.
2 Pandey, Vishnu Prasad; Dhaubanjar, Sanita; Bharati, Luna; Thapa, Bhesh Raj. 2019. Hydrological response of Chamelia Watershed in Mahakali Basin to climate change. Science of the Total Environment, 650(Part 1):365-383. [doi: https://doi.org/10.1016/j.scitotenv.2018.09.053]
Water resources ; Watersheds ; Climate change ; Hydrological factors ; Water availability ; Water balance ; Stream flow ; Groundwater ; Temperature ; Precipitation ; Forecasting ; River basins ; Soil types ; Spatial distribution ; Models ; Uncertainty ; Hydrometeorology / Nepal / Mahakali Basin / Chamelia Watershed
(Location: IWMI HQ Call no: e-copy only Record No: H048982)
(6.23 MB)
Chamelia (catchment area = 1603 km2 ), a tributary of Mahakali, is a snow-fed watershed in Western Nepal. The watershed has 14 hydropower projects at various stages of development. This study simulated the current and future hydrological system of Chamelia using the Soil and Water Assessment Tool (SWAT). The model was calibrated for 2001–2007; validated for 2008–2013; and then applied to assess streamflow response to projected future climate scenarios. Multi-site calibration ensures that the model is capable of reproducing hydrological heterogeneity within the watershed. Current water balance above the Q120 hydrological station in the forms of precipitation, actual evapotranspiration (AET), and net water yield are 2469 mm, 381 mm and 1946 mm, respectively. Outputs of five Regional Climate Models (RCMs) under two representative concentration pathways (RCPs) for three future periods were considered for assessing climate change impacts. An ensemble of bias-corrected RCM projections showed that maximum temperature under RCP4.5 (RCP8.5) scenario for near-, mid-, and far-futures is projected to increase from the baseline by 0.9 °C (1.1 °C), 1.4 °C (2.1 °C), and 1.6 °C (3.4 °C), respectively. Minimum temperature for the same scenarios and future periods are projected to increase by 0.9 °C (1.2 °C), 1.6 °C (2.5 °C), and 2.0 °C (3.9 °C), respectively. Average annual precipitation under RCP4.5 (RCP8.5) scenario for near-, mid-, and far-futures are projected to increase by 10% (11%), 10% (15%), and 13% (15%), respectively. Based on the five RCMs considered, there is a high consensus for increase in temperature but higher uncertainty with respect to precipitations. Under these projected changes, average annual streamflow was simulated to increase gradually from the near to far future under both RCPs; for instance, by 8.2% in near-, 12.2% in mid-, and 15.0% in far-future under RCP4.5 scenarios. The results are useful for planning water infrastructure projects, in Chamelia and throughout the Mahakali basin, to ensure long-term sustainability under climate change.
3 Pandey, Vishnu Prasad; Dhaubanjar, Sanita; Bharati, Luna; Thapa, Bhesh Raj. 2018. Climate change and water availability in western Nepal. In Nepal Academy of Science and Technology (NAST). Proceedings of the Seminar on Nature for Water, Kanchanpur, Nepal, 28 March 2018. Kathmandu, Nepal: Nepal Academy of Science and Technology (NAST) pp.8-19.
Climate change ; Water availability ; Hydrology ; Models ; Watersheds ; Precipitation ; Temperature ; Forecasting ; Water resources ; River basins ; Projects / Nepal / Mahakali Basin / Chamelia Watershed
(Location: IWMI HQ Call no: e-copy only Record No: H049463)
http://www.nast.gov.np/documentfile/proceedings_theSeminar_Water.pdf
https://vlibrary.iwmi.org/pdf/H049463.pdf
https://vlibrary.iwmi.org/pdf/H049463.pdf
(0.84 MB) (6.21 MB)
The response of any hydrological system to climate change may differ depending on characteristics of the system. Such studies are lacking for basins in Western Nepal. This paper, therefore, argues for a need to re-phrase the context of Western Nepal in more positive light and then analyses how a projected change in climate may impact on water availability of the region with a case of Chamelia watershed. A hydrological model in SWAT (Soil and Water Assessment Tool) environment is developed for the purpose. Future climate is projected using a set of fi ve Regional Circulation Models (RCMs). Then response of streamfl ow with projected change in climate is assessed. Results show the developed model performance is adequate to represent hydrological characteristics of the watershed. Future is projected to be warmer (high model consensus) and slightly wetter (more uncertainty), with winter and premonsoon season receiving more rainfall. Under the projected future changes, simulated stream fl ow is projected to change across future periods and seasons. The results are expected to be useful for future water resource and water infrastructure planning in the area.
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