C. S. P. Ojha
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View article: Evaluation of Crop Water Stress Index (CWSI) for Irrigation Scheduling of Wheat in Sub- Humid Conditions of India
Evaluation of Crop Water Stress Index (CWSI) for Irrigation Scheduling of Wheat in Sub- Humid Conditions of India Open
This research explores the use of the Crop Water Stress Index (CWSI) for planning irrigation in wheat (Triticum aestivum L.) under field conditions in Roorkee, India, during the 2018–19 and 2019–20 growing seasons. Five different irrigatio…
View article: Characterization and predictive modelling of quasi-saturated hydraulic conductivity across land use systems in the Northwest Himalayas
Characterization and predictive modelling of quasi-saturated hydraulic conductivity across land use systems in the Northwest Himalayas Open
This study investigated the variation in soil hydrological properties-saturated water-holding capacity (SWHC), field capacity (FC), total porosity (TP), and saturated hydraulic conductivity (Ks)-across different land use systems in the Sem…
View article: AI-Driven Spatial Data Analysis of Groundwater Level and Gravimetric Data in Roorkee Region, India
AI-Driven Spatial Data Analysis of Groundwater Level and Gravimetric Data in Roorkee Region, India Open
Excessive consumption of groundwater can lead to a significant imbalance between groundwater recharge rates and water demand. This disparity underscores the importance of accurately estimating future groundwater storage to ensure global wa…
View article: Characterization of Red Sandstone and Black Crust to Analyze Air Pollution Impacts on a Cultural Heritage Building: Red Fort, Delhi, India
Characterization of Red Sandstone and Black Crust to Analyze Air Pollution Impacts on a Cultural Heritage Building: Red Fort, Delhi, India Open
Urban air pollution poses significant risks to cultural heritage buildings, particularly in polluted megacities like Delhi, India. The Red Fort, a UNESCO World Heritage Site and a symbol of India’s rich history, is highly susceptible to de…
View article: Application of machine learning techniques in the evaluation of local groundwater level using field gravity data: Insights from random forest and random tree
Application of machine learning techniques in the evaluation of local groundwater level using field gravity data: Insights from random forest and random tree Open
Evaluation of local groundwater levels (GWL) is crucial for sustainable water resource management. This study introduces a novel approach leveraging field gravity data to optimize machine learning (ML) models for local GWL evaluation. This…
View article: A Cluster‐Based Data Assimilation Approach to Generate New Daily Gridded Time Series Precipitation Data in the Himalayan River Basins
A Cluster‐Based Data Assimilation Approach to Generate New Daily Gridded Time Series Precipitation Data in the Himalayan River Basins Open
Recent studies show variations in precipitation‐gridded data set accuracy with changing geographical parameters. Ensemble precipitation products, combining diverse data sets, offer global‐scale effectiveness, but applying them to regional …
View article: Utility of Certain AI Models in Climate-Induced Disasters
Utility of Certain AI Models in Climate-Induced Disasters Open
To address the current challenge of climate change at the local and global levels, this article discusses a few important water resources engineering topics, such as estimating the energy dissipation of flowing waters over hilly areas thro…
View article: Investigating Flow around Submerged I, L and T Head Groynes in Gravel Bed
Investigating Flow around Submerged I, L and T Head Groynes in Gravel Bed Open
Riverbank erosion poses a significant threat to the stability and integrity of river training structures. River training structures such as groynes are important components of sustainable development as they play a crucial role in mitigati…
View article: Mitigating the after-effect of climate-induced disaster through energy dissipation using stepped storm waterway in hilly roads
Mitigating the after-effect of climate-induced disaster through energy dissipation using stepped storm waterway in hilly roads Open
The current research examines the after-effects of climate-induced disasters in India's Himalayan region, as well as the consequences of highway damage. To avoid the damages caused by heavy rain, cloudbursts, and landslides, a design of st…
View article: Evaluation of spring flows using recession flow analysis techniques
Evaluation of spring flows using recession flow analysis techniques Open
This study delves into the analysis of recession characteristics of spring base flow, focusing on the Hill campus spring (elevation of approximately 2,150 m) and Fakua spring (elevation of approximately 1,850 m) in the Tehri Garhwal distri…
View article: A Numerical Expedition through the Mathematical Representation of Complex Braided Morphometry—A Case Study of Brahmaputra River in India
A Numerical Expedition through the Mathematical Representation of Complex Braided Morphometry—A Case Study of Brahmaputra River in India Open
The present work explores the process of mathematical representation for the complex geometry of a wide alluvial river with high braiding intensities. It primarily focuses on an approach to developing a numerical solution algorithm for rep…
View article: Utilizing crop water stress index for efficient irrigation scheduling of wheat (Triticum Aestivum L.)
Utilizing crop water stress index for efficient irrigation scheduling of wheat (Triticum Aestivum L.) Open
The study aimed to assess the viability of utilizing canopy temperature-based crop water stress index (CWSI) for scheduling of irrigation in wheat crop (Triticum Aestivum L.). Field experiments were carried out for 2021-2022 and 2022-2023 …
View article: Development and Evaluation of Machine Learning Models for Vortex Tube Sediment Ejector
Development and Evaluation of Machine Learning Models for Vortex Tube Sediment Ejector Open
The vortex tube silt ejector (VTSE) is an important hydraulic device for reducing sediment deposits in canals, providing a very effective alternative to manual sediment removal. The complex nature of the silt removal process occurs from th…
View article: Comparative analysis of effectiveness of I Head, L Head and T Head Groyne
Comparative analysis of effectiveness of I Head, L Head and T Head Groyne Open
In the present scenario of changing hydrological patterns due to natural and human-induced reasons, the need for effective management of the river system has become more pronounced than ever. This emphasises the necessity to construct rive…
View article: Parameter Estimation of Oxygen Transfer at Hydraulic Structures 
Parameter Estimation of Oxygen Transfer at Hydraulic Structures  Open
Dissolved oxygen is an indicator of water quality, and a minimum of 4 ppm is required for the survival of aquatic life. The oxygen is transferred when water flows over the hydraulic structure by entraining air into the bulk of the flow. Th…
View article: Climate change impact assessment on the hydrological regime of the upper Ganga Basin
Climate change impact assessment on the hydrological regime of the upper Ganga Basin Open
The Hindu Kush region of the Himalayas is a valuable source of fresh water and is facing significant challenges due to its sensitivity to temperature and precipitation. Our study emphasizes Devprayag a snow-dominated area in the upper Gang…
View article: Quantifying runoff variability and Glacier thickness variations from 2011 to 2020 in Gangotri glaciated region, India
Quantifying runoff variability and Glacier thickness variations from 2011 to 2020 in Gangotri glaciated region, India Open
Recent research indicates a substantial reduction in glacier mass within the Himalayas, primarily attributed to rising temperatures, leading to heightened uncertainties regarding downstream water availability. This study specifically inves…
View article: Unraveling Precipitation Variability and Changes Concerning Elevation Profile in Historical and Future Times in the Himalayan Upper Ganga Basin
Unraveling Precipitation Variability and Changes Concerning Elevation Profile in Historical and Future Times in the Himalayan Upper Ganga Basin Open
View article: Pixel-Based Soil Loss Estimation and Prioritization of North-Western Himalayan Catchment Based on Revised Universal Soil Loss Equation (RUSLE)
Pixel-Based Soil Loss Estimation and Prioritization of North-Western Himalayan Catchment Based on Revised Universal Soil Loss Equation (RUSLE) Open
Land degradation is a noteworthy environmental risk causing water quality issues, reservoir siltation, and loss of valuable arable lands, all of which negate sustainable development. Analysis of the effect of land use changes on erosion ra…
View article: Development of a Framework for Cost–Benefit Analysis of I-Head and T-Head Groynes Based on Scour and Turbulent Flow Characteristics
Development of a Framework for Cost–Benefit Analysis of I-Head and T-Head Groynes Based on Scour and Turbulent Flow Characteristics Open
River bank protection is a vital component of sustainable development. This study investigates and compares the scour and flow features around two different types of groynes, an unsubmerged I-head groyne (IHG) and T-head groyne (THG), to p…
View article: Application of AI-Based Techniques on Moody’s Diagram for Predicting Friction Factor in Pipe Flow
Application of AI-Based Techniques on Moody’s Diagram for Predicting Friction Factor in Pipe Flow Open
The friction factor is a widely used parameter in characterizing flow resistance in pipes and open channels. Recently, the application of machine learning and artificial intelligence (AI) has found several applications in water resource en…
View article: Insight on pollution and energy recovery potential of leachate from landfill sites of Northern India
Insight on pollution and energy recovery potential of leachate from landfill sites of Northern India Open
Leachate is a highly digested by-product of waste degradation originating from municipal landfills. It has high pollution potential and needs to be treated before disposal. Environmentally sustainable technology like microbial fuel cells (…
View article: Evaluation of statistical downscaling model's performance in projecting future climate change scenarios
Evaluation of statistical downscaling model's performance in projecting future climate change scenarios Open
Statistical downscaling (SD) is preferable to dynamic downscaling to derive local-scale climate change information from large-scale datasets. Many statistical downscaling models are available these days, but comparison of their performance…
View article: Landfill Leachate Management
Landfill Leachate Management Open
Landfill leachate is a complex mix of organics, inorganics and heavy metals produced from conventional and engineering landfilling practices. The adverse effects of landfill leachate on human and environmental health have forced the releva…
View article: Prevalence of antibiotics and antibiotic resistance genes in landfill leachate
Prevalence of antibiotics and antibiotic resistance genes in landfill leachate Open
Landfills are an essential source of antibiotics and antibiotic resistance genes (ARGs) and can potentially risk humans and the environment. Landfills receive heavy metals, organic matter, microbial consortia, antibiotics, antibiotic resid…
View article: Effect of Long-Term Tillage Practices on Runoff and Soil Erosion in Sloping Croplands of Himalaya, India
Effect of Long-Term Tillage Practices on Runoff and Soil Erosion in Sloping Croplands of Himalaya, India Open
Slopy agricultural lands are more susceptible to soil erosion and hence are priority sites for the application of protective soil management practices. A conservation agriculture field experiment was established at a 6% field slope in 2011…
View article: ENVIRONMENTAL SUSTAINABILITY ASSESSMENT OF A HIMALAYAN CATCHMENT WITH LAND COVER INDICES AND LST RELATIONSHIP USING PRINCIPAL COMPONENT ANALYSIS – A GEOSPATIAL APPROACH
ENVIRONMENTAL SUSTAINABILITY ASSESSMENT OF A HIMALAYAN CATCHMENT WITH LAND COVER INDICES AND LST RELATIONSHIP USING PRINCIPAL COMPONENT ANALYSIS – A GEOSPATIAL APPROACH Open
Environmental sustainability assessment is a crucial part of the management of natural resources. Remote Sensing based environmental land cover indices such as Normalized Difference Vegetation Index (NDVI), Normalized Difference Water Inde…
View article: Modeling Depth averaged velocity and Boundary Shear Stress distribution with complex flows
Modeling Depth averaged velocity and Boundary Shear Stress distribution with complex flows Open
In the present study, the depth-averaged velocity and boundary shear stress in non-prismatic compound channels with three different converging floodplain angles ranging from 1.43ᶱ to 7.59ᶱ have been studied. The analytical solu…
View article: Irrigation Schedules for Wheat Crop and Water Saving
Irrigation Schedules for Wheat Crop and Water Saving Open
Agricultural water takes more than 70% of the available water resources, globally and wheat is one of the most widely grown and irrigated crops in the world. Keeping the ongoing and predicted global water scarcity, water saving in agricult…
View article: Effect Of Channel Width on Energy Dissipation Efficiency of Stepped Spillway
Effect Of Channel Width on Energy Dissipation Efficiency of Stepped Spillway Open
Experimental investigation on flat stepped spillway were conducted with two different width 0.52m and 0.28m on 26.670 slope under nappe flow regimes. The study assessed the rate of energy dissipation at the toe of the spillway for unit dis…