Remote Sensing and Geographic Information System Based Approach for Watershed Conservation

Biswas, Sujata; Sudhakar, S.; Desai, V. R.

doi:10.1061/(asce)0733-9453(2002)128:3(108)

Cited by 28 publications

(19 citation statements)

References 2 publications

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“…The researchers have divided the Murli sub-watershed in the Subarnarekha Basin of the Nayagram block in the Midnapore district of West Bengal State in eastern India into 44 micro watersheds with areas less than 10 km 2 , which were prioritized based on morphometric parameters [11]. Morphometric indices are determined after the rating has been done based on every single morphometric parameter, the rating values for every sub-watershed are arranged to arrive at a compound value.…”

Section: Review Of Literaturementioning

confidence: 99%

“…The watershed that got the highest value of composite number is assigned the last priority number. The same procedure was adopted by various researchers [5,9,11,16,19] for prioritization of watersheds with in a catchment.…”

Section: Determination Of Average Ranking and Watershed Prioritymentioning

confidence: 99%

“…The watershed that got the highest value was assigned the last priority number. The same procedure was adopted by the researchers [5,9,11,16,19] for prioritization of watersheds of a catchment. The results of prioritization of watersheds based on morphometric parameters and comparison of the same with the observed sediment Fig.…”

Section: Ranking Of Each Watershed Based On Morphometric Parameters Amentioning

confidence: 99%

“…Despite the development of a range of physically based soil erosion and sediment transport equations, sediment yield predictions at a watershed or regional scale are at present achieved mainly through simple empirical models. Simple methods include models based on the geomorphological parameters were widely used for the estimation of surface erosion and sediment yield from the catchment area [4][5][6][7][8][9][10][11] methods based on sediment yield index (SYI) [12,13].…”

Section: Introductionmentioning

confidence: 99%

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Identification of Erosion Prone Areas by Morphometric Analysis Using GIS

Das¹

2014

J. Inst. Eng. India Ser. A

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This study was undertaken to determine the priority watersheds for conservation of natural resources of the Haharo sub catchment in the Damodar catchment of upper Damodar valley area having an area of 565 km 2 involving four watersheds in Jharkhand State in eastern India by morphometric analysis using topographical maps on a scale of 1:50,000. To define the morphometric features of the watershed, the topographic information of the study area at 1:50,000 scaled are taken for analysis with the help of GIS tools. The topographical information derived from this map is utilized for calculating parameters and fixing of priority of watershed for suggesting conservation measures. The parameters computed include the morphometric parameters like bifurcation ratio, drainage density, stream frequency, texture ratio, and three basin shape parameters i.e., form factor, circularity ratio, and elongation ratio. A rating was done for each of these parameters according to their value. Average of all these parameter for each watershed is calculated to determine the priority. Among the four watersheds 4/4 was the highest priority area where conservation measure has to be taken first then watershed 4/3. Watershed 4/1 was the medium priority area and watershed 4/2 was the low priority area.

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Section: Review Of Literaturementioning

confidence: 99%

Section: Determination Of Average Ranking and Watershed Prioritymentioning

confidence: 99%

Section: Ranking Of Each Watershed Based On Morphometric Parameters Amentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Identification of Erosion Prone Areas by Morphometric Analysis Using GIS

Das¹

2014

J. Inst. Eng. India Ser. A

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“…The applications of GIS in that setting can pinpoint the threats and practices impacting water resource quality and availability and the spatial patterns [14][15][16][17][18][19][20][21][22]. Many studies exist in the literature with focus on water management using GIS [23][24][25][26][27]. In the context of the study area, these themes are essential as Nigeria searches for the right tools for water resource management.…”

Section: Introductionmentioning

confidence: 99%

Analyzing Water Management Issues Using GIS: The Case of Nigeria

Merem¹,

Twumasi²,

Wesley³

et al. 2017

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In the past several years, Nigeria continues to experience robust economic development with growth rates surpassing those of her neighbors. Added to all these are pressures from rising population spread across different eco-regions and a growing demand for water use to meet the needs of different segments of the economy. With that have come water stress, limiting access, and degradation compounded by incoherent policy in water management in the country despite vast hydrological endowments. Notwithstanding policy efforts and provisions supporting proper management under various jurisdictions, water access remains a big issue in Nigeria where it is yet to be accorded priority. Seeing the various guidelines designed to safeguard aquatic ecosystems, the regulatory framework has been ineffective in containing the widespread discharge of toxics into surface water environments. The fact that current lapses in water management threaten the environment and public health in Nigeria, no effort has been made to assess the trends from a mix-scale perspective. Without that approach, managers lose sight of locational severity, the tracking of stressors and factors impeding water use. Accordingly, the study analyses water management issues in Nigeria using mix-scale method of GIS and descriptive statistics. Emphasizing the issues, environmental analysis, factors fuelling the problems and ongoing initiatives, results show declines in water quality, widespread degradation, limited access and growing demand. With the issues linked to various elements, GIS assessment reveals a steady dispersion of socio-economic factors as well as diffusion of stressors in some areas. Despite current initiatives, Nigeria's water environment remains under stress with projected deficits. To deal with the issue, this research recommends the need for improved policy, regular monitoring, and the design of data infrastructure, sustainable use and regional cooperation.

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