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Vishnu Prasad Pandey

Vishnu Prasad Pandey
Pulchowk Campus. Institute of Engineering. Tribhuvan University. Nepal · Department of Civil Engineering

PhD

About

124
Publications
49,769
Reads
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2,325
Citations
Citations since 2017
75 Research Items
1898 Citations
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Introduction
Hydrology, Water Resources, Climate Change Impacts & Adaptation; Groundwater; Modeling; Drought
Additional affiliations
November 2016 - present
International Water Management Institute (IWMI)
Position
  • Researcher
March 2015 - November 2016

Publications

Publications (124)
Conference Paper
Full-text available
Hydrologic regime plays a vital role in the sustainable ecosystem. However, its alterations due to various climatic and anthropogenic activities cause significant impacts on river health. Hence, in this paper, we have analyzed the degree of hydrologic alterations in a snow-fed Marshyangdi watershed, Nepal, using the Indicators of Hydrologic Alterat...
Article
Full-text available
Climate change has increased the intensity and frequency of hydro-climatic extremes in many parts of the world and they are projected to continue in the future too, thus, posing a major threat to agriculture, biodiversity, ecosystems, and water systems. This study characterized the historical as well as projected future hydro-climatic extremes in t...
Article
Full-text available
Solar-powered irrigation pumps are a vital tool for both climate change adaptation and mitigation. Since most developing countries cannot fully utilize large-scale global funds for climate finance due to limited institutional capacities, small-scale solar irrigation pumps (SIPs) can provide a climate-resilient technological solution. We study the c...
Article
Recurring floods have devastating consequences on the East Rapti Watershed (ERW), but effective mitigation/adaptation measures are lacking. This article aims at establishing a rainfall‐runoff (RR) relationship; estimating depth and extent of inundation under climate change scenarios; assessing impacts on the socio‐economy; and identifying and evalu...
Preprint
Full-text available
The flow variability, sediment influx and sediment transport attribute to the morphological changes of any river. The dynamic nature of the Koshi River results in frequent morphological changes. After reaching Terai, the flood plain of the Koshi becomes highly braided and usually after every peak events the braided pattern and flow paths changes an...
Article
Climate change alters the river flow regimes causing significant changes in the structure and function of an aquatic ecosystem, ultimately affecting river health. This study applied a customized framework consisting of 1-index, 4-components, 6-indicators, and 43-metrics, to assess river health for two seasons and future periods, in the Marshyangdi...
Technical Report
Full-text available
This report assesses the current state of Nepal’s irrigation sector and presents a sustainable and inclusive farmer-led irrigation development framework, that was co-created with key stakeholders to ensure that recommendations are in line with local development priorities. In brief, the report suggests that a re-orientation in the irrigation sect...
Article
Full-text available
Floods pose significant risk to riparian buildings as evidenced during many historical events. Although structural resilience to tsunami flooding is well studied in the literature, high-velocity and debris-laden floods in steep terrains are not considered adequately so far. Historical floods in steep terrains necessitate the need for flood vulnerab...
Article
Full-text available
An accurate estimation of precipitation amount is crucial for various studies and planning related to water resource management, effective flood prediction and warning systems, agriculture, climatic research, and disaster risk management. However, due to the sparse and uneven distribution of ground-based precipitation gauges over rugged terrain, ac...
Article
An understanding of water sufficiency provides a basis for informed-planning, development and management of water resources. This study assessed spatio-temporal distribution in water sufficiency in the Extended East Rapti watershed in Nepal. The “Palika” (local government unit) is considered as a spatial-scale and seasons and future periods as temp...
Preprint
Full-text available
Floods pose significant risk to riparian buildings as evidenced during many historical events. Although structural resilience to tsunami flooding is well studied in the literature, high velocity and debris laden floods in steep terrains are not considered adequately so far. Historical floods in steep terrains necessitate the need for flood vulnerab...
Article
Full-text available
River systems originating from the Upper Indus Basin (UIB) are dominated by runoff from snow and glacier melt and summer monsoonal rainfall. These water resources are highly stressed as huge populations of people living in this region depend on them, including for agriculture, domestic use, and energy production. Projections suggest that the UIB r...
Article
The ‘effective’ root depth of perennial ryegrass used for irrigation scheduling has substantial implications when estimating irrigation requirements. This study included field measurements of 20 percolation lysimeters with diameters and heights of 500 and 900 mm, respectively, installed on the Lincoln University Dairy Farm, Christchurch, New Zealan...
Article
Full-text available
Water quality index (WQI) is a valuable arithmetic tool that depicts the overall status of water quality in a single number to prioritize for management interventions. This study aims to assess water quality based on the WQI to provide insights into the status of the aquatic ecosystems in the Marshyangdi River basin, a tributary of the Narayani Riv...
Article
Full-text available
In this research, numerical simulation of hydraulic transients in a pressure pipeline using Method of Characteristics (MOC) was carried out and the analysis of the water hammer pressure along the pipe and the mass oscillation in the surge tank were performed. As there is only limited research on the water hammer caused by valve operation mechanism,...
Article
Full-text available
Despite subtle variations in soil moisture (SM) across a paddock, irrigation scheduling in New Zealand dairy farms is solely based on the SM monitored at a single location, primarily using an Aquaflex soil moisture sensor at a specified root depth. This study aimed to address this issue by assessing the “effective” root depth of a pasture, calibrat...
Article
Full-text available
The Kathmandu Valley in Nepal is facing a water quantity and quality crisis due to rapid urbanization and haphazard water and wastewater planning and management. Annually, groundwater extractions in the Kathmandu Valley exceed capture, resulting in groundwater table declines. Streams are often important sources of recharge to (or destination of dis...
Article
Full-text available
Study Region Eastern Nepal, The Himalayas. Study focus This research is aimed at delineating groundwater potential zones in a hard-rock aquifer Himalayan watershed integrating geo-spatial and field exploration techniques. A customized indicator-based weighting method, consisting of six indicators, was developed and applied in the study watershed....
Conference Paper
Full-text available
Selecting representative climate models and appropriate bias correction techniques is a decisive step for assessing climate change. A widely used approach for selecting climate models is the evaluation of past performance during the historical period. The selected models are then used to assess the likely deviation in the future under changing clim...
Conference Paper
Full-text available
A sound understanding of projected climate, including precipitation and temperature, is critical for an effective design and planning of adaptation and mitigation measures in combating the adverse effects of climate change. This study projects maximum (T max) and minimum (T min) daily temperature in the Narayani River Basin (NRB), central Nepal, fo...
Conference Paper
Full-text available
Kathmandu valley, an abode to more than 2.5 million people has experienced a substantial increase in urbanization. More land surfaces are modifying into built-up areas, causing the conversion of pervious surfaces to impervious surfaces. The water storage capacity of the basin is decreasing while surface runoff amount and its rate is increasing. In...
Article
Full-text available
Springs supply water for drinking and livelihood for a vast majority of rural population in Nepal. Haphazard development activities are affecting springs adversely in hills and mountains of Nepal. This study aims to map springs, characterize their status from visual inspection and local/indigenous knowledge, characterize water quality, and then eva...
Article
With economies heavily dependent on agriculture, South Asia is the world's most poverty-dense region. Nepal—a country of considerable geographic variability ranging from population-dense low-elevation Terai region to the sparsely inhabited, poorly accessible Himalayan hills and mountains—has enormous environmental and socio-economic challenges to a...
Article
Full-text available
Assessing variability of historical and projected future precipitation extremes is of high value in managing water resources effectively. The Himalayan environment of Nepal is comprised of both hills and mountains. The hills are the most susceptible to precipitation extremes and related natural hazards, which hinder the socioeconomic development of...
Data
This file consists of the processed data of the paper Pradhan et al. 2021 published in the Earth's Future (https://doi.org/10.1029/2021EF001996). We processed impact scores and mechanisms provided by experts during online survey, workshops, and review and validation processes. This processed data, i.e., impact scores and mechanisms, are used for id...
Article
Full-text available
The COVID‐19 pandemic has impacted social, economic, and environmental systems worldwide, slowing down and reversing the progress made in achieving the Sustainable Development Goals (SDGs). SDGs belong to the 2030 Agenda to transform our world by tackling humankind's challenges to ensure well‐being, economic prosperity, and environmental protection...
Research
Full-text available
This research is part of a larger effort to develop a framework for sustainable irrigation development in the FtF-ZoI considering biophysical issues as well as socioeconomic, policy, and institutional concerns, complemented by futuristic scenario modeling of irrigation development options. This document, therefore, informs these efforts and provide...
Article
Full-text available
Springs in the mountains and hills are getting affected by both climatic and non-climatic changes. Hydrologic models are used to simulate the response of spring systems to the changes; however, only a limited number of studies using the hydrologic modeling approach have been accomplished on studying springs and spring-dominated watersheds in Nepal....
Chapter
This study applies the water security framework in Bangkok city, Thailand at different spatial (five districts: Sathon, Lat Phrao, Nong Chok, Bangkok Noi and Nong Kheam) and temporal (2007–2014) scales. The framework consists of an index (water security index, WSI), five dimensions, ten parameters and twelve indicators. The five dimensions cover fo...
Article
Full-text available
Natural hazards are complex phenomena that can occur independently, simultaneously, or in a series as cascading events. For any particular region, numerous single hazard maps may not necessarily provide all information regarding impending hazards to the stakeholders for preparedness and planning. A multi-hazard map furnishes composite illustration...
Article
Extreme climatic and hydrological events result in water-induced disasters and associated loss and damage of lives, livelihoods, and properties. It is related with various climatic, topographical, and anthropogenic factors, and therefore, expected to vary widely across the watersheds. This study characterized historical and projected future trends...
Article
Full-text available
The impacts of multihazards have become more pronounced over the past few decades globally. Multiple hazards and their cascading impacts claim enormous losses of lives, livelihoods, and built environment. This paradigm prompts integrated and multidisciplinary perspectives to identify, characterize, and assess the occurrence of multihazards and subs...
Chapter
Various drivers such as population growth, land use/cover change, unsustainable consumption pattern, and climate change are putting pressure on limited resources available within our planetary boundaries, thus, raising concerns on their sustainability. Coordinated actions at levels ranging from global to local are required to ensure sustainability...
Article
en With the increasing population and accelerated urbanization, demands for water are rising for different sectors around the world, including in South Asia. Integrated water resource management (IWRM) offers a promising potential to address multifaceted water demands. This study therefore aimed to address this issue by (i) reviewing key issues rel...
Data
This supporting information consists of two figures and one tables. Figure S1. Experts with various professional backgrounds from academia, civil society organizations, governments, grassroots initiatives, national and international organizations, and the private sector have participated in our survey (left) and workshops (right). Figure S2. Impa...
Preprint
Full-text available
The COVID-19 pandemic has affected humankind worldwide, slowing down and even reversing the progress made in achieving Sustainable Development Goals (SDGs). It has negatively impacted most SDGs but with positive impacts on a few. We discuss some initial impacts observed and explores potential impacts on the achievement of SDGs for Nepal. The study...
Article
Full-text available
Climate change/variability and subsequent exacerbation of extremes are affecting human and ecological health across the globe. This study aims at unpacking hydro-climatic extremes in a snow-fed Marshyangdi watershed, which has a potential for water infrastructure development, located in Central Nepal. Bias-corrected projected future climate for nea...
Technical Report
Full-text available
This study has the goal of assessing prospects for planned CU and potential strategies for to realize it in the FtF-ZoI districts (Terai only) located in the Western Nepal. Three specific objectives to achieve the goal are – i) To assess current and future water availability, ii) To evaluate current and future water demands, and iii) To assess pro...
Article
Full-text available
Water security is a key in achieving sustainable development goals (SDGs); however, it is gradually becoming a scarce resource due to pressure from both climatic and non-climatic factors. Understanding sources and extend of vulnerability of the water resources is the very first step to design appropriate strategies aimed at securing water for vario...
Article
Full-text available
Streamflow alteration and subsequent change in long-term average, seasonality, and extremes (e.g., floods and droughts) may affect water security, which is a major concern in many watersheds across the globe. Both climatic and anthropogenic activities may contribute to such changes. Therefore, this study assesses: (i) Streamflow and precipitation t...
Article
Full-text available
Study region Karnali-Mohana (KarMo) river basin, Western Nepal. Study focus This study has developed a hydrological model using multi-site calibration approach for a large basin, the Karnali-Mohana (KarMo) in Western Nepal, which has a lot of potential for water resources development and contribute to the national prosperity. It further applies th...
Article
Full-text available
Study region Karnali-Mohana river basin, Western Nepal. Study focus This study aims to project future climate and assess impacts of climate change (CC) on water availability in the Karnali-Mohana (KarMo) basin. Bias-corrected future climate was projected based on ensembles of multiple models selected from a set of 19 regional climate models (RCMs)...
Article
Groundwater resources of Kathmandu Valley in Nepal are under immense pressure from multiple stresses, including climate change. Due to over-extraction, groundwater resources are depleting, leading to social, environmental and economic problems. Climate change might add additional pressure by altering groundwater recharge rates and availability of g...
Article
Water security is a key in achieving sustainable development goals (SDGs); however, it is gradually becoming a scarce resource due to pressure from both climatic and non-climatic factors. Understanding sources and extend of vulnerability of the water resources is the very first step to design appropriate strategies aimed at securing water for vario...
Article
Full-text available
This article investigates water security in Nepal from the perspective of the water-energy-agriculture (food) nexus, focusing on pathways to water security that originate in actions and policies related to other sectors. It identifies promoting development of Nepal’s hydropower potential to provide energy for pumping as way to improve water securit...
Article
Full-text available
To meet the demand deficit in Kathmandu Valley, the Government of Nepal has planned to supply an additional 510 million liters per day (mld) of water by implementing the Melamchi Water Supply Project (MWSP) in the near future. In this study, we aim to assess the spatial distribution of groundwater availability and pumping under five scenarios for b...
Article
Full-text available
Himalayan river basin is marked by a complex topography with limited observational data. In the context of increasing extreme events, this study aims to characterize drought events in the Karnali River Basin (KRB). Firstly, historical data for 34-years (1981–2014) from ten different stations were analyzed to compute following drought indices: Stand...
Article
With the objective to provide a basis for regional climate models (RCMs) selection and ensemble generation for climate impact assessments, we perform the first ever analysis of projections for Western Nepal from 19 RCMs in the Coordinated Regional Downscaling Experiment for South Asia (CORDEX‐SA). Using the climate futures (CF) framework, projected...
Article
Basin-wide planning requires tools and strategies that allow comparison of alternative pathways and priorities at relevant spatial and temporal scales. In this paper, we apply a hydroeconomic model–the Western Nepal Energy Water Model–that better accounts for feedbacks between water and energy markets, to optimize water allocations across energy, a...
Article
Full-text available
The Himalayas are highly susceptible to the impacts of climate change, as it consequently increases the vulnerability of downstream communities, livelihoods and ecosystems. Western Nepal currently holds significant potential as multiple opportunities for water development within the country are underway. However, it is also identified as one of the...
Article
Water resources can play significant roles in development pathways for water-endowed, low-income countries like Nepal. This article describes three visions for water resource development in the Karnali and Mahakali Basins of Western Nepal: state-led development, demand-driven development and preservation of ecosystem integrity. The analysis calls a...
Article
The objective of this research is to develop a fuzzy-based groundwater sustainability index (FGSI) model to evaluate the sustainability of groundwater system at selected cities in Asian. The new Mamdani type fuzzy-based inference system known as FGSI was developed. It contains five components and twenty-four indicators, which covers five dimensions...
Article
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; valid...