T. Thomas

T. Thomas
National Institute of Hydrology · Central India Hydrology Regional Centre, WALMI Campus, BHOPAL, Madhya Pradesh, India

Doctor of Philosophy

About

74
Publications
45,529
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1,342
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Introduction
Dr. T. Thomas currently works at National Institute of Hydrology. BHOPAL, India. His broad areas of research include Water Resources Engineering and Civil Engineering . Has handled projects on 'Hydrological Modelling', 'Drought Management', 'Snowmelt Runoff Modelling', 'Watershed Management,' and 'Climate Change'. Their current projects include 'Ensemble Modelling Approach for Climate Change Impact Assessment on Water Resources in Narmada Basin, India'; 'Revival of Village Ponds through Scientific Interventions in Sagar District, Bundelkhand, India'; 'Integrated Assessment of the Impacts of Upcoming Irrigation Projects and Climate Change on the Drought and Desertification Scenario in Chambal basin, India; 'Hydrological Modelling of Narmada using GWAVA Model - International Proj. etc..
Additional affiliations
January 2018 - December 2020
National Institute of Hydrology
Position
  • Researcher
January 2014 - August 2017
National Institute of Hydrology
Position
  • Researcher
July 1997 - January 2015
National Institute of Hydrology
Position
  • Researcher

Publications

Publications (74)
Chapter
Full-text available
Climate change has long-term impacts on precipitation patterns, magnitude, and intensity, affecting regional water resources availability. Besides, understanding the interannual to decadal variations of streamflows in a river basin is paramount for watershed management, primarily extreme events such as floods and droughts. This study investigates i...
Article
Full-text available
Drought is an extreme event and its frequency is expected to increase in future under the imminent threats of climate change. The areas vulnerable to drought are increasing due to increase in the spatial extent and severity of droughts. This necessitates the need for development of an integrated framework for assessment of drought vulnerability, wh...
Article
Full-text available
Potential evapotranspiration is an important index of hydrologic budget at different spatial scales and it is a critical variable for understanding regional biological processes. Several models have been used in computing reference evapotranspiration. This study aims at identifying a suitable alternative method to FAO-56 PM method for estimating th...
Preprint
Full-text available
Climate change has long-term impacts on precipitation patterns, magnitude, and intensity, affecting regional water resources availability. Besides, understanding the interannual to decadal variations of streamflows in a river basin is paramount for watershed management, primarily extreme events such as floods and droughts. This study investigates i...
Article
Full-text available
The increasing impact of anthropogenic interference on river basins has facilitated the development of the representation of human influences in large-scale models. The representation of groundwater and large reservoirs have realised significant developments recently. Groundwater and reservoir representation in the Global Water Availability Assessm...
Article
Full-text available
The availability of water resources is under stress due to its unsustainable exploitation. The Chambal basin is located in the water-scarce region in India with average annual rainfall varying between 687.1 mm in the Rajasthan (RJ) region and 938.2 mm in the Madhya Pradesh (MP) region. On average, there are 48 rainy days in the MP region and 39 rai...
Preprint
Full-text available
A robust hydrological assessment is challenging in regions where human interference, within all aspects of the hydrological system, significantly alters the flow regime of rivers. The challenge was to extend a large-scale water resources model, GWAVA, to better represent water resources without increasing the model complexity. A groundwater and a r...
Article
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This paper investigates the rainfall pattern and its distribution, which is one of the key drivers for the water availability in the Western Ghats region of India. The daily precipitation data from 1901 to 2014 were investigated to understand the rainfall pattern and its variability. The study area has been divided as southern, coastal, central, an...
Article
The potential impacts of climate change on the water resources of the Narmada basin in central India has been investigated using the Soil and Water Assessment Tool (SWAT). The existing dams in the river basin have been incorporated in the model setups, calibration and validation. The COordinated Regional climate Downscaling EXperiment datasets for...
Article
Full-text available
Dams have been playing a significant role in enhancing socioeconomic status of people and environmental benefits in arid and semi-arid region of world. However, they cause a huge damage to the life and property when dam breaches. To minimise the effect of dam breaches, it is important to identify potential areas which likely get affected by using t...
Article
Full-text available
The Narmada river basin is a highly regulated catchment in central India, supporting a population of over 16 million people. In such extensively modified hydrological systems, the influence of anthropogenic alterations is often underrepresented or excluded entirely by large-scale hydrological models. The Global Water Availability Assessment (GWAVA)...
Article
Integrated water resources management (IWRM) is being implemented all over the world, considering its wide area of applications and flexible spatial scale. Scientists have found IWRM useful in an Indian context also where a coordinated development of water and land resources is sought as part of complete economic, social and environmental welfare....
Article
Full-text available
This study employed field measurements and established techniques to estimate various water budget components in Ur river basin. The spatial information pertaining to the topography, land use and soil type were extracted using the Arc 9.3 GIS software which helped to quantify many of the water balance components. The water budgeting of the Ur river...
Presentation
Full-text available
It's my master degree research work, firstly present in conference HYDRO 2014 in MANIT Bhopal. Thanx...
Article
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It is a well-known fact that it is not all possible to avoid droughts, but droughts can be managed to minimise the hardships of the local population. For this purpose, understanding of the supply-demand scenario is of utmost importance to understand the overall hydrology and planning needs of any watershed. It is in this direction, the comprehensiv...
Research
Full-text available
Drought is a natural disastrous phenomenon that occurs due to the continuous reduction of rainfall over a short or a long period of time. A deficit in precipitation result in deficit of groundwater recharge, which leads to lower groundwater table and turn in groundwater drought. This is a challenging problem in Bundelkhand region of the Central Ind...
Article
Full-text available
In India agriculture system mainly depends upon rainfall for their survival. Rainfall analysis is essential for water resources planning and management. An attempt has been made to carrying out the probability analysis using the rainfall data of 30 years (1976-2005) in various influencing raingauge stations viz., Damoh, Hatta, Jabera, Rehali and De...
Article
Full-text available
The meteorological drought characteristics including onset, departure, duration, severity as well as intensity have been evaluated mainly for monsoon season at all the three rain gauge stations located in Dhasan basin. The Standardized Precipitation Index (SPI) has been applied to understand and quantify the drought severity on multiple time scale...
Chapter
The Bundelkhand region in Central India is facing several environmental issues since the last decade including recurrent droughts, dominant land use changes due to many influencing factors including over exploitation of the natural resources and its degradation, climatic variability and decreased agricultural productivity. The agriculture of the re...
Chapter
Full-text available
Bhopal district has been developing at a very fast pace with most of the developmental activities being concentrated in the Bhopal city and along its periphery mostly comprising of the urban-rural fringe areas. This has resulted in considerable changes in the land use in the city and its fringes, with substantial areas being converted to semi-pervi...
Chapter
The unsaturated soil hydraulic properties may be considered the key factors governing the partitioning of rainfall and irrigation into soil water storage, evapotranspiration, and deep drainage. The understanding of regional parameters of soil water retention process with the most appropriate model is necessary for better understanding of water move...
Chapter
Climate, soil, vegetation, topography, and man are the factors that affect soil erosion, and out of these vegetation and soil to some extent are the only factors which man can control. Fertile soil by carrying erosion fills dam reservoir and reduces dam’s economical life, hence economy of country get debilitated big amount. To specify hazard and da...
Article
Full-text available
The prediction of probable maximum precipitation (PMP) and annual one-day maximum rainfall at different return periods were carried out for providing necessary information required for designing of various soil and water conservation structures like field bunding, vegetative waterways, field diversions, check dams, gully control structures etc. for...
Article
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The Upper Lake, (Bhojtal) is situated in the city Bhopal.Upper Lake is the major source of water for the city Bhopal. Economic as well as recreational activities of the city Bhopal are dependent on the water availability in the upper Bhopal Lake. This receives water as surface runoff only during monsoon period of each and every year. The upper lake...
Conference Paper
The fast growing development and ignorance of catchment area treatment plan during and after implementation of water resource project accelerating rate of sedimentation and disturbing the ecological balance in reservoirs and watersheds. While it is not possible to totally avoid or stop siltation, one way to reduce the siltation of the reservoirs an...
Article
Full-text available
Drought is a natural hazard that can have severe impacts on a variety of sectors and at a variety of scales. The Bundelkhand region in Central India has been under the grip of continuous and recurrent drought in the recent years. This has caused large scale economic losses and severe hardships for the local population leading to large scale out-mig...
Article
Full-text available
Among all the different types of extreme events drought is considered to be the most hazardous in terms economic losses and number of people being affected by its impacts, mainly due to the various complexities involved. Since it is rather difficult to predict and forecast droughts with a reasonable degree of certainty, the drought management aspec...
Conference Paper
Full-text available
Water resource management is an important element of irrigation and crop production. Efficient irrigation systems and water management practices can help maintain farm profitability in an era of limited, higher-cost water supplies. The present study aimed to analyse scenarios based demand-supply assessment in Harsi command of Madhya Pradesh (India)...
Article
Full-text available
Decision makers face multifaceted challenge in characterizing drought climatology for appropriate water resources-related drought management strategies. This paper focuses on understanding and quantifying the drought vulnerability of Bearma basin in the Bundelkhand region of central India, which is one of the prominent climate extremes that the reg...
Conference Paper
Climate, soil, vegetation, topography and man are the factors that affect soil erosion, and out of these vegetation and soil to some extent are the only factors which man can control. Fertile soils by carrying erosion fills dam reservoir and reduces dam’s economical life, hence economy of country get debilitated big amount. To specify hazard and da...
Conference Paper
Drought is a natural hazard that can have severe impacts on a variety of sectors and at a variety of scales. The Bundelkhand region in Central India has been under the grip of continuous and recurrent drought in the recent years. This has caused large scale economic losses and severe hardships for the local population leading to large scale out-mig...
Article
Full-text available
Drought monitoring is an important aspect for assessing and forecasting the drought risk for an area. The various types of drought including the meteorological drought and groundwater drought have been analysed using the appropriate drought indicators for Dhasan basin. This has helped in understanding the spatio-temporal variation of droughts inclu...
Article
Full-text available
A number of water quality indices based on classification criteria, sub-indices and aggregation function have been developed by the researchers for categorizing the water quality for different uses. In the present study, a general Overall Water Quality Index (OWQI) is developed to classify the surface water into five categories, viz. excellent, goo...
Conference Paper
Full-text available
Groundwater monitoring networks, which are primarily used for observing the water levels and water quality, are necessary for the assessment and regulation of resource, control depletion, protection from geogenic and anthropogenic pollution and sustaining river flows during lean season. These networks support the monitoring process over a long peri...
Article
Full-text available
Daily rainfall of 23 high resolution (1° x 1°) grid cells covering the Narmada basin has been analyzed to investigate the trend in extreme rainfall events. The trend analysis of the 1-day maximum rainfall series showed a significant positive trend at 95% significance level with the Mann-Kendall test statistic value of z = 3.66 over the entire basin...
Article
The water availability in a river influence significantly due to change in flow regime because of water transfer from external sources or regulated operations like river diversion, construction of dam, on-stream uses, etc. The assessment of impact of water transfer on water availability in the river is imperative for the planning of water allocatio...
Article
Abstract The article presents an efficient multi-criteria decision support model (MCDSM) to prioritize susceptible areas in a watershed for soil conservation measures based on impact analysis of topography, climate, morphology, soil, land cover, management and conservation factors. The MCDS model has been developed based on fuzzy analytical hierarc...
Article
Full-text available
The spatiotemporal variations of the drought scenario over the Bundelkhand region in Central India have been studied using the Standardized Precipitation Index (SPI) for the time scales of 3-months, 6-months and 12-months. The space-time variability of the drought characteristics has been analyzed using the SPI which is based only on the long-term...
Article
Full-text available
River/stream’s catchment area, which is the source of endowment for water resource projects, is generally developed without giving much emphasis on protection against soil’s erosion from catchment that results into loss of beneficial storage, breach of banks, loss of nutrients and many other environmental problems. The prioritization of sub-watersh...
Article
Water resources management in arid and semiarid regions is a hydrologically challenging proposition for the decision makers and planners as they are more susceptible to drought. The Bundelkhand region is under the limelight due to continuous droughts resulting in acute water scarcity leading to large-scale out-migration of people. The effective dro...
Article
MIKE BASIN is an integrate water resource management and planning computer model that integrates GIS with water resource modelling (DHI, 2006). The Bundelkhand region in Central India has been in the grip of severe drought in the last decade mainly due to poor, limited and untimely rainfall and its high variability coupled with improper water resou...
Article
Full-text available
Land use and land cover is an important component to understand basin level land status as it shows the present as well as past status of the earth’s surface. The land use/land cover pattern of a region is an outcome of natural and socio-economic factors and its utilization gives information about the human livelihood and development. Land use and...
Article
Full-text available
The evaluation of meteorological and hydrological drought characteristics including the dry spell analysis for planning of supplemental irrigation has been carried out for Bearma basin in Bundelkhand region of Central India. The Bundelkhand region has been under a spell of recurrent droughts. In the last decade, widespread droughts were felt during...
Article
Full-text available
The recent spells of recurrent and consecutive droughts in the Bundelkhand region in Central India have led to uncertain rain-fed agriculture and its sustainability. Adequate knowledge of starting dates and lengths of dry spells has a considerable importance in rain-fed agriculture, irrigation planning, and various decision-making processes. The lo...
Article
The identification of environmentally stressed areas for planning soil conservation measures requires an efficient decision support tool to provide appropriate weights for various topographical, morphological, climatological and management factors responsible for soil erosion. In the present study, Saaty’s analytical hierarchy process (SAHP) with n...
Article
Abstract The development of rainfall runoff relationship for ungauged watersheds using topography, geomorphology and other regional information remains the most active area of research in the field of hydrology. In the developing countries, some thumb rules and very old equations are in practice for designing water resources structures which someti...
Article
A scientifically developed catchment area treatment (CAT) plan and optimized pattern of crop areas may be the key for sustainable development of water resource, profitability in agriculture and improvement of overall economy in drought affected Bundelkhand region of Madhya Pradesh (India). In this study, an attempt has been made to develop a CAT pl...
Article
Full-text available
The unsaturated hydraulic functions are key input data in numerical models of vadose zone processes. The direct measurement of soil moisture at different suction heads requires detailed analysis of soil samples with sophisticated instruments which can be replaced with the help of pedotransfer functions (PTFs) which are empirical relationships betwe...
Article
The important hydrological issues in Nauradehi Wildlife Sanctuary (NWLS) are development of water resources, development of flora and fauna, trouble-free water availability for wildlife and retention of soil moisture for maximum forest growth. In the present study, the surface and groundwater resources of the sanctuary were estimated using water ba...
Article
Full-text available
Groundwater being an important component of the hydrological cycle as it sustains the streamflow during precipitation free periods and is a major source of water supply. The dependence on the groundwater has increased drastically over the years leading to over exploitation of the aquifers. Therefore, it is imperative to assess the extent of exploit...
Article
Information on rate and extent of reservoir sedimentation is essential for taking up appropriate measures in controlling the sediment inflow, to obtain updated assessment of useful life of the reservoir and to decide on the optimum reservoir operation schedule based on realistic assessment of available storage. In the present study, a comparison of...
Article
The periodic sedimentation surveys of reservoirs are necessary to get more realistic estimate regarding the rate of siltation and to provide reliable criteria for assessment of environmental impact on ecology of the region. The conventional methods of sediment assessment of reservoirs are laborious, costly, time consuming and can be replaced by ima...
Article
Groundwater being an important component of the hydrological cycle, estimation of its annual replenishment is essential to evolve a plan for optimum utilization. Groundwater balance approach, which is used extensively for the quantification of recharge and discharge components has been adopted for the rainfall-recharge estimation. Various inflow an...
Article
Seasonal and annual trends of changes in rainfall, rainy days, heaviest rain and relative humidity have been studied over the last century for nine different river basins in northwest and central India. The majority of river basins have shown increasing trends both in annual rainfall and relative humidity. The magnitude of increased rainfall for co...
Article
Full-text available
Estimates of trends of climatic changes at basin and state scales are required for developing adaptation strategies related to planning, development and management of water resources. In the present study, seasonal and annual trends of changes in maximum temperature (Tmax), minimum temperature (Tmin), mean temperature (Tmean), temperature range (Tr...
Article
Full-text available
The Chhindwara district of Madhya Pradesh, India is facing various challenges like water scarcity, recurrent drought condition, poor development of the available water resources and declining ground water table. The water resources development and planning of the region is to be done by systematic approach to meet these challenges. The priority teh...
Article
The availability of water during non-monsoon season is very low, its reasonably accurate estimation and forecast plays a vital role in the systematic developmental planning and utilisation of water resources. A statistical model was used to forecast the low flows (November to May) for the river Beas at Pandoh, using the 10-day flow data of previous...
Article
Full-text available
Extreme environmental events such as floods cause a lot of damage to life and property of human society. A reliable estimation of magnitude and frequency of occurrence of such extreme events is of great significance in minimizing damages by facilitating proper planning and design of civil engineering structures such as bridges, barrages and dams. I...
Article
The snowmelt runoff model (SRM) developed by Martinec and Rango has been applied to Beas basin upto Pandoh dam site having extensive snow cover during winter for modelling the snowmelt runoff. IRS-1C, WiFS data has been digitally analyzed using the Integrated Land and Water Information System (ILWIS) software to estimate the aerial extent of the sn...
Article
Hydrological modelling of stream flow is essential to assess and forecast the river flows, which has become imperative in view of water resources getting scarce. Whenever catchments are gauged, mathematical models can be developed, which may be calibrated and validated for historical flood events. In the developing countries like India most of the...

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