Assessment of groundwater vulnerability in Walawe River basin, Sri Lanka

Priyantha Ranjan; Ashim Das Gupta; So Kazama; Masaki Sawamoto

Assessment of groundwater vulnerability in Walawe River basin, Sri Lanka

Priyantha Ranjan, Ashim Das Gupta, So Kazama, Masaki Sawamoto

ENG - Civil and Environmental Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In the present study, DRASTIC model has been used as a feasible methodology to assess the groundwater vulnerability in the Walawe river basin, Sri Lanka. The main objective of the study is to assess the potential level of groundwater vulnerability for pollution and to compare the areas with land use activities representing the degree of usage of fertilizers in agriculture. The Geographical Information Systems (GIS) has been used to develop vulnerability maps, showing the relative vulnerability of the area. The results concluded that the upper part of the basin shows very low vulnerability and the lower part shows higher vulnerability for groundwater pollution. The ground water vulnerability maps are compared with the agricultural land use pattern of the area and it is noticed that the areas with intense agricultural activities, overlapped with the areas with high DRASTIC index values. In the area with higher DRASTIC index and with intense agricultural activities including the extensive usage of fertilizers and pesticides, more attention should be focused to establish monitoring network for adequate groundwater quality control and to reduce the anthropogenic stress on groundwater resources.

Original language	English
Title of host publication	31st IAHR Congress 2005
Subtitle of host publication	Water Engineering for the Future, Choices and Challenges
Editors	Jun Byong-Ho, Il Lee Sang, Seo Il Won, Choi Gye-Woon
Publisher	Korea Water Resources Association
Pages	4387-4394
Number of pages	8
ISBN (Electronic)	8987898245, 9788987898247
Publication status	Published - 2005
Event	31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges - Seoul, Korea, Republic of Duration: 2005 Sept 11 → 2005 Sept 16

Publication series

Name	31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges

Conference

Conference	31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges
Country/Territory	Korea, Republic of
City	Seoul
Period	05/9/11 → 05/9/16

Keywords

DRASTIC
Groundwater pollution
Land use
Vulnerability

ASJC Scopus subject areas

Engineering (miscellaneous)
Environmental Science (miscellaneous)
Water Science and Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Cite this

Ranjan, P., Gupta, A. D., Kazama, S., & Sawamoto, M. (2005). Assessment of groundwater vulnerability in Walawe River basin, Sri Lanka. In J. Byong-Ho, I. L. Sang, S. I. Won, & C. Gye-Woon (Eds.), 31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges (pp. 4387-4394). (31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges). Korea Water Resources Association.

Assessment of groundwater vulnerability in Walawe River basin, Sri Lanka. / Ranjan, Priyantha; Gupta, Ashim Das; Kazama, So et al.

31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges. ed. / Jun Byong-Ho; Il Lee Sang; Seo Il Won; Choi Gye-Woon. Korea Water Resources Association, 2005. p. 4387-4394 (31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ranjan, P, Gupta, AD, Kazama, S & Sawamoto, M 2005, Assessment of groundwater vulnerability in Walawe River basin, Sri Lanka. in J Byong-Ho, IL Sang, SI Won & C Gye-Woon (eds), 31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges. 31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges, Korea Water Resources Association, pp. 4387-4394, 31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges, Seoul, Korea, Republic of, 05/9/11.

Ranjan P, Gupta AD, Kazama S, Sawamoto M. Assessment of groundwater vulnerability in Walawe River basin, Sri Lanka. In Byong-Ho J, Sang IL, Won SI, Gye-Woon C, editors, 31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges. Korea Water Resources Association. 2005. p. 4387-4394. (31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges).

Ranjan, Priyantha ; Gupta, Ashim Das ; Kazama, So et al. / Assessment of groundwater vulnerability in Walawe River basin, Sri Lanka. 31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges. editor / Jun Byong-Ho ; Il Lee Sang ; Seo Il Won ; Choi Gye-Woon. Korea Water Resources Association, 2005. pp. 4387-4394 (31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges).

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abstract = "In the present study, DRASTIC model has been used as a feasible methodology to assess the groundwater vulnerability in the Walawe river basin, Sri Lanka. The main objective of the study is to assess the potential level of groundwater vulnerability for pollution and to compare the areas with land use activities representing the degree of usage of fertilizers in agriculture. The Geographical Information Systems (GIS) has been used to develop vulnerability maps, showing the relative vulnerability of the area. The results concluded that the upper part of the basin shows very low vulnerability and the lower part shows higher vulnerability for groundwater pollution. The ground water vulnerability maps are compared with the agricultural land use pattern of the area and it is noticed that the areas with intense agricultural activities, overlapped with the areas with high DRASTIC index values. In the area with higher DRASTIC index and with intense agricultural activities including the extensive usage of fertilizers and pesticides, more attention should be focused to establish monitoring network for adequate groundwater quality control and to reduce the anthropogenic stress on groundwater resources.",

keywords = "DRASTIC, Groundwater pollution, Land use, Vulnerability",

author = "Priyantha Ranjan and Gupta, {Ashim Das} and So Kazama and Masaki Sawamoto",

note = "Funding Information: The authors would like to acknowledge the field officers and staff members in International Water Management Institute (IWMI), Water Resources Board and National Water Supply and Drainage Board in Sri Lanka for the invaluable help and support in collecting the field data. Publisher Copyright: {\textcopyright} 31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges. All Rights Reserved.; 31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges ; Conference date: 11-09-2005 Through 16-09-2005",

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AU - Gupta, Ashim Das

AU - Kazama, So

AU - Sawamoto, Masaki

N1 - Funding Information: The authors would like to acknowledge the field officers and staff members in International Water Management Institute (IWMI), Water Resources Board and National Water Supply and Drainage Board in Sri Lanka for the invaluable help and support in collecting the field data. Publisher Copyright: © 31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges. All Rights Reserved.

PY - 2005

Y1 - 2005

N2 - In the present study, DRASTIC model has been used as a feasible methodology to assess the groundwater vulnerability in the Walawe river basin, Sri Lanka. The main objective of the study is to assess the potential level of groundwater vulnerability for pollution and to compare the areas with land use activities representing the degree of usage of fertilizers in agriculture. The Geographical Information Systems (GIS) has been used to develop vulnerability maps, showing the relative vulnerability of the area. The results concluded that the upper part of the basin shows very low vulnerability and the lower part shows higher vulnerability for groundwater pollution. The ground water vulnerability maps are compared with the agricultural land use pattern of the area and it is noticed that the areas with intense agricultural activities, overlapped with the areas with high DRASTIC index values. In the area with higher DRASTIC index and with intense agricultural activities including the extensive usage of fertilizers and pesticides, more attention should be focused to establish monitoring network for adequate groundwater quality control and to reduce the anthropogenic stress on groundwater resources.

AB - In the present study, DRASTIC model has been used as a feasible methodology to assess the groundwater vulnerability in the Walawe river basin, Sri Lanka. The main objective of the study is to assess the potential level of groundwater vulnerability for pollution and to compare the areas with land use activities representing the degree of usage of fertilizers in agriculture. The Geographical Information Systems (GIS) has been used to develop vulnerability maps, showing the relative vulnerability of the area. The results concluded that the upper part of the basin shows very low vulnerability and the lower part shows higher vulnerability for groundwater pollution. The ground water vulnerability maps are compared with the agricultural land use pattern of the area and it is noticed that the areas with intense agricultural activities, overlapped with the areas with high DRASTIC index values. In the area with higher DRASTIC index and with intense agricultural activities including the extensive usage of fertilizers and pesticides, more attention should be focused to establish monitoring network for adequate groundwater quality control and to reduce the anthropogenic stress on groundwater resources.

KW - DRASTIC

KW - Groundwater pollution

KW - Land use

KW - Vulnerability

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Assessment of groundwater vulnerability in Walawe River basin, Sri Lanka

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

UN SDGs

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