scholarly journals Morphometric Analysis of Ken River Basin through Remote Sensing and GIS Techniques

2020 ◽  
pp. 122-129
Author(s):  
Ramesh Verma ◽  
Sumit Kumar ◽  
Om Prakash Kumar ◽  
Gaurav Sharma ◽  
Pradeep Kumar Singh Bhadauria
Keyword(s):  
Remote Sensing ◽  
Form Factor ◽  
Water Resources ◽  
River Basin ◽  
Water Conservation ◽  
Remote Sensing And Gis ◽  
Stream Length ◽  
Bifurcation Ratio ◽  
High Flood ◽  
The Impact

Management of water resources required assessment of morphometric parameters in order to enhance the capability of understanding the factor which may help to render the impact caused due to high flood due to inadequate water disposal management. In the present study computation of linear, aerial and relief aspects viz., bifurcation ratio, mean bifurcation ratio (Rbm), mean stream length (Lum), stream length ratio (Rl), form factor (Ff), circularity ratio (Rc), stream frequency (Fs), drainage density (Dd), dissection index (Di), ruggedness index (Ri) has been carried out in order evaluate watershed characteristics for soil conservation and watershed management. The basin poses a high flood potential risk due to inadequate drainage and less channel development. The Ken river basin is elongated in shape as indicated by the computation of form factor with comparatively less value. Due to inadequate drainage patterns for safe disposal of surplus water, the vulnerability to water erosion can be considered as a major cause of concern in the Ken river basin. Evaluation of relief aspects suggested the existence of intense flood characteristics within the basin during period of heavy rainfall. Assessment using remote sensing and GIS approach can prove as an effective tool for analyzing properties of basin and for sustainable management of available water resources with exercise of suitable sites selection for development of structure to control runoff and adaptation of conventional methods for water conservation, thus increasing infiltration rate with decreased surface runoff and erosion.

scholarly journals Evaluation of Hydrogeomorphological Landforms and Lineaments using Remote Sensing and GIS Techniques in Ramannapet Mandal, Musi River basin, Nalgonda District, Telangana

2016 ◽  
Vol 5 (10) ◽  
Author(s):  
Narsimha Kota ◽  
Ravi Sanatana ◽  
B. Ramaraju ◽  
P. Gnaneshwar
Keyword(s):  
Remote Sensing ◽  
River Basin ◽  
Groundwater Potential ◽  
Remote Sensing And Gis ◽  
Agricultural Activity ◽  
Groundwater Potential Zones ◽  
Lineament Density ◽  
Gis Techniques ◽  
The Impact ◽  
Musi River

The IRS -P6 LISS-IV satellite data is used to demarcate Hydrogeomorphology land forms and lineaments on 1;10000 scale to evaluate groundwater potential of the study area. The Ramannapet Mandal area of Musi river basin is occupied mostly by hard rock they are granites and gneisses of Archaean age with intrusive bodies of dolerites, and of the portion of the study area is covered mainly by both wet and dry cultivation. The major geomorphic unit identified in the area are, Denudational hills, Residual hills, Inselbergs, Dykes, Pediment inselberg complex, Pediment, Pediplain and valleys. Most part of the study area is occupied by Pediplain with various thickness and the groundwater potential is directly related to thickness of Pediplain. The object of the study is Remote Sensing imagery with its synoptic coverage acts as a tool for finding suitable solution when combined with conventional data. Hydro-geomorphic maps were prepared by integrating the Lithology, landforms, and structural fabric and hydrology layers and drainage layers using Remote Sensing and GIS techniques, the scale range of 1: 10,000. The lineament density map was generated in GIS software using Kriging method (Sabins, F. F., (1997). Outcomes of the study Based on visual interpretation and field investigations the different types of hydro geomorphic units observed in the study area. The recent alluvium deposits are present along the stream courses. Field observations shows that groundwater occurs under unconfined conditions with water table shallow to deep depth. from the lineament density and lineament intersection maps prepared to understand the impact on groundwater percolation. Finally, Hydrogeomorphology and lineament maps area overlaid following the weighted index overlay method, which delineate groundwater potential zones. an integrated Remote sensing and GIS based approach has been used for demarcating groundwater potential zones in the study area. The study area Ramannapet Mandal is in northern part of the district of Nalgonda, Telangana State, India. The study area people occupation is agricultural, and poultry, 80 percent of the people depending only agricultural activity

scholarly journals Analysing the Impact of Climate Change on Hydrological Ecosystem Services in Laguna del Sauce (Uruguay) Using the SWAT Model and Remote Sensing Data

2021 ◽  
Vol 13 (10) ◽  
pp. 2014
Author(s):  
Celina Aznarez ◽  
Patricia Jimeno-Sáez ◽  
Adrián López-Ballesteros ◽  
Juan Pablo Pacheco ◽  
Javier Senent-Aparicio
Keyword(s):  
Climate Change ◽  
Remote Sensing ◽  
Ecosystem Services ◽  
Water Resources ◽  
Swat Model ◽  
Remote Sensing Data ◽  
Erosion Control ◽  
Sensing Data ◽  
Extreme Precipitation Events ◽  
The Impact

Assessing how climate change will affect hydrological ecosystem services (HES) provision is necessary for long-term planning and requires local comprehensive climate information. In this study, we used SWAT to evaluate the impacts on four HES, natural hazard protection, erosion control regulation and water supply and flow regulation for the Laguna del Sauce catchment in Uruguay. We used downscaled CMIP-5 global climate models for Representative Concentration Pathways (RCP) 2.6, 4.5 and 8.5 projections. We calibrated and validated our SWAT model for the periods 2005–2009 and 2010–2013 based on remote sensed ET data. Monthly NSE and R2 values for calibration and validation were 0.74, 0.64 and 0.79, 0.84, respectively. Our results suggest that climate change will likely negatively affect the water resources of the Laguna del Sauce catchment, especially in the RCP 8.5 scenario. In all RCP scenarios, the catchment is likely to experience a wetting trend, higher temperatures, seasonality shifts and an increase in extreme precipitation events, particularly in frequency and magnitude. This will likely affect water quality provision through runoff and sediment yield inputs, reducing the erosion control HES and likely aggravating eutrophication. Although the amount of water will increase, changes to the hydrological cycle might jeopardize the stability of freshwater supplies and HES on which many people in the south-eastern region of Uruguay depend. Despite streamflow monitoring capacities need to be enhanced to reduce the uncertainty of model results, our findings provide valuable insights for water resources planning in the study area. Hence, water management and monitoring capacities need to be enhanced to reduce the potential negative climate change impacts on HES. The methodological approach presented here, based on satellite ET data can be replicated and adapted to any other place in the world since we employed open-access software and remote sensing data for all the phases of hydrological modelling and HES provision assessment.

scholarly journals Attribution of Long-Term Evapotranspiration Trends in the Mekong River Basin with a Remote Sensing-Based Process Model

2021 ◽  
Vol 13 (2) ◽  
pp. 303
Author(s):  
Shi Hu ◽  
Xingguo Mo
Keyword(s):  
Remote Sensing ◽  
Water Resources ◽  
Solar Radiation ◽  
River Basin ◽  
Mekong Delta ◽  
Mekong River ◽  
Catchment Management ◽  
Mekong River Basin ◽  
Area Index ◽  
Available Water

Using the Global Land Surface Satellite (GLASS) leaf area index (LAI), the actual evapotranspiration (ETa) and available water resources in the Mekong River Basin were estimated with the Remote Sensing-Based Vegetation Interface Processes Model (VIP-RS). The relative contributions of climate variables and vegetation greening to ETa were estimated with numerical experiments. The results show that the average ETa in the entire basin increased at a rate of 1.16 mm year−2 from 1980 to 2012 (36.7% of the area met the 95% significance level). Vegetation greening contributed 54.1% of the annual ETa trend, slightly higher than that of climate change. The contributions of air temperature, precipitation and the LAI were positive, whereas contributions of solar radiation and vapor pressure were negative. The effects of water supply and energy availability were equivalent on the variation of ETa throughout most of the basin, except the upper reach and downstream Mekong Delta. In the upper reach, climate warming played a critical role in the ETa variability, while the warming effect was offset by reduced solar radiation in the Mekong Delta (an energy-limited region). For the entire basin, the available water resources showed an increasing trend due to intensified precipitation; however, in downstream areas, additional pressure on available water resources is exerted due to cropland expansion with enhanced agricultural water consumption. The results provide scientific basis for practices of integrated catchment management and water resources allocation.

A simple distributed water balance model for an urbanized river basin using remote sensing and GIS techniques

2019 ◽  
Vol 35 (9) ◽  
pp. 954-975
Author(s):  
Olutoyin Adeola Fashae ◽  
Rotimi Oluseyi Obateru ◽  
Adeyemi Oludapo Olusola
Keyword(s):  
Remote Sensing ◽  
Water Balance ◽  
River Basin ◽  
Remote Sensing And Gis ◽  
Water Balance Model ◽  
Balance Model ◽  
Gis Techniques

scholarly journals Optimal Water Allocation Based on Water Rights Transaction Models with Administered and Market-Based Systems: A Case Study of Shiyang River Basin, China

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 577 ◽  
Author(s):  
Lizhen Wang ◽  
Yong Zhao ◽  
Yuefei Huang ◽  
Jianhua Wang ◽  
Haihong Li ◽  
...  
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Water Allocation ◽  
Water Rights ◽  
Water Saving ◽  
Allocation Model ◽  
Transaction Model ◽  
Shiyang River Basin ◽  
The Impact ◽  
Optimal Water Allocation

Water-rights trade has proved to be an effective method for coping with water shortages through the transfer of water resources between users. The water allocation system is classified into two categories based on information transparency and water rights transaction goals: administered system (AS) and market-based system (MS). A multi-agent and multi-objective optimal allocation model, built on a complex adaptive system, was introduced to direct the distribution of water resources under an AS in the Shiyang River Basin; it was compared with a market-based water rights transaction model using the bulletin-board approach. Ideal economic agent equations played a dominant role in both models. The government and different water users were conceptualized as agents with different behaviors and goals in water allocation. The impact of water-saving cost on optimal water allocation was also considered. The results showed that an agent’s water-saving behavior was incentivized by high transaction prices in the water market. Under the MS, the highest bid in the quotation set had a dominant influence on how trade was conducted. A higher transaction price will, thus, result in a better benefit ratio, and a lower one will result in inactivity in terms of water rights trade. This will significantly impact the economic benefit to the basin.

Sign in / Sign up

Export Citation Format

Share Document