Hydrogeomorphic advancements in river science for water security in India

Jain, Vikrant; Karnatak, Nikita; Raj, Anukritika; Shekhar, Shashank; Bajracharya, Prashanta; Jain, Shaleen

doi:10.1016/j.wasec.2022.100118

Cited by 3 publications

(3 citation statements)

References 99 publications

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“…Globally, stream environments and aquatic ecosystems have been managed using Eflow through various methods. India has primarily managed E-flow using the hydrological method to ensure water security [20]. However, India, like South Korea, is still in the early development phase.…”

Section: Introductionmentioning

confidence: 99%

“…However, India, like South Korea, is still in the early development phase. India defines E-flow as the natural or regulated flow of a specific quantity, timing, duration, frequency, and quality of streamflow required to manage the ecological system, including the sustainability of freshwater, estuarine, and near-shore ecosystems [20,21]. Japan has managed E-flow using the hydraulic method for 30 years, and this is regulated by national law [22].…”

Section: Introductionmentioning

confidence: 99%

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Design of Ecological Flow (E-Flow) Considering Watershed Status Using Watershed and Physical Habitat Models

Kim,

Lee,

Woo

et al. 2023

Water

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Ecological flow (E-flow) determination is an essential component of stream management and the preservation of aquatic ecosystems within a watershed. E-flow should be determined while considering the overall status of the watershed, including the hydrological cycle, hydraulic facility operation, and stream ecology. The purpose of this study is to determine E-flow by considering watershed status through coupled modeling with SWAT and PHABSIM. SWAT was calibrated to ensure reliability when coupling the two models, using observed data that included streamflow and dam inflows. The calibration result of SWAT showed that the averages of R2, NSE, and RMSE were 0.62, 0.57, and 1.68 mm/day, respectively, showing satisfactory results. Flow duration analysis using the SWAT results was performed to apply to discharge boundary conditions for PHABSIM. The averages of Q185 (mid-range flows) and Q275 (dry conditions) were suitable to simulate fish habitat. The habitat suitability index derived through a fish survey was applied to PHABSIM to estimate E-flow. E-flow was estimated at 20.0 m3/s using the coupled model and compared with the notified instream flow by the Ministry of Environment. The results demonstrate a high level of applicability for the coupled modeling approach between the watershed and physical habitat simulation models. Our attempt at coupled modeling can be utilized to determine E-flow considering the watershed status.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of Ecological Flow (E-Flow) Considering Watershed Status Using Watershed and Physical Habitat Models

Kim,

Lee,

Woo

et al. 2023

Water

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“…Rivers are natural flows on the continent's surface, fed by rain, groundwater, and melt water [1][2][3]. Rivers play the role of water transfer in the hydrological cycle of the basin and, at the same time, represent the characteristics of water security, ecology, and the environment of a region, city, or country [4][5][6][7]. Maintaining the stability of river flow is a topical issue for ensuring the life and production process of people living on both sides of the river.…”

Section: Introductionmentioning

confidence: 99%

Current velocity field in section of Sai Gon river during operation of flood control structures

Markova,

Khanh,

Vokhidov

2023

E3S Web of Conf.

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The largest economic center in Vietnam - Ho Chi Minh City, is facing increasingly serious riverbank erosion, one of the main reasons being the flow. Therefore, in this study, the flow velocity field on the Saigon River section is accurately analyzed in different time intervals with the help of MIKE 11 and MIKE 21 models. The simulation results show that The number of flow velocities in the middle of the river is 3-4 times greater than that of the two banks. However, between high tide and low tide, the flow on both sides of the river is faster than the main flow, especially in the upper part of the winding banks, such as the section from Ben Nghe sluice to Tan Thuan, sewer and river section from An Loi Dong Ward police station to Thu Thiem Bridge 2. The velocity value on the studied river section, in most cases, exceeds the allowable value of the non-erosion velocity of the bed material particles. , riverbanks, as well as suspended sediment particles. Therefore, the erosion process on both sides of the river will occur regularly and continuously, so urgent measures are needed to protect the riverbank. During the operation of the anti-flood sluice, the flow velocity will decrease slightly before sluices also appear as whirlpools. The flow velocity on the Saigon River has a complex distribution and changes from time to time depending on the flood discharge from Dau Tieng Lake and the tidal currents of the East Sea.

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Assessing the Impacts of Land Use and Land Cover Changes on the Water Quality of River Hooghly, West Bengal, India: A Case Study

et al. 2023

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Rivers are crucial components of human civilization, as they provide water for domestic, agricultural, and industrial use. Additionally, they transport domestic and industrial waste to the sea. The Ganga River is a major river in India, originating from Gangotri in the north, flowing through five provinces, and discharging into the Bay of Bengal. This study examined the impact of land use and land cover changes (LULC) on water quality along the River Hooghly in India. The research involved collecting water samples from different locations and analyzing them in the laboratory to estimate various parameters. The findings indicate that the expansion of built-up and agricultural lands is causing a reduction in tree cover and water bodies, leading to deteriorating water quality. The study highlights the need for sustainable land use practices and improved water management to preserve the river’s ecosystem and maintain water quality. Specifically, the study identified localities in the vicinity of Dakshineshwar, Shibpur, and Garden Reach as particularly vulnerable to water quality deterioration due to LULC changes and population growth. The study’s results provide valuable insights for policymakers and stakeholders in implementing strategies to address the challenges posed by land use changes and population growth.

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Hydrogeomorphic advancements in river science for water security in India

Cited by 3 publications

References 99 publications

Design of Ecological Flow (E-Flow) Considering Watershed Status Using Watershed and Physical Habitat Models

Design of Ecological Flow (E-Flow) Considering Watershed Status Using Watershed and Physical Habitat Models

Current velocity field in section of Sai Gon river during operation of flood control structures

Assessing the Impacts of Land Use and Land Cover Changes on the Water Quality of River Hooghly, West Bengal, India: A Case Study

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