Sustainable groundwater management on the small island of Manukan, Malaysia

Sarva Mangala Praveena, and Mohd Harun Abdullah, and Kawi Bidin, and Ahmad Zaharin Aris, (2012) Sustainable groundwater management on the small island of Manukan, Malaysia. Environmental Earth Sciences, 66 (3). pp. 719-728. ISSN 1866-6280


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Numerical models are capable of simulating various groundwater scenarios and relate it towards groundwater management. This paper focuses on numerical modeling and water balance approaches in the search for a sustainable management plan in Manukan Island. The impacts of pumping and recharge rates represented by groundwater scenarios were investigated by means of hydraulic heads, chloride concentrations and water balance components. Overpumping and inconsistency in recharge rate are the stresses shown in Scenario A. Scenario B involved with reduction pumping rate by 25% has shown an increase in groundwater levels, chloride concentration and groundwater storage. Scenario C showed the most promising finding compared with Scenarios A and B. Highest hydraulic heads, lowest chloride concentration (1,552.2 mg/L) and positive groundwater storage (254.3 m 3/day) were obtained in Scenario C. Chloride concentration in pumping wells still exceeds World Health Organization International Standard limit in Scenario C which illustrates an additional water treatment is needed. Nevertheless, in view of a compromise groundwater management plan in study area, Scenario C is the best plan so far to protect the groundwater resources in the study area. More understanding of the artificial recharge method (percolation tank) and study site by means of modeling studies is needed. Additionally, further progress is needed in obtaining the water usage data from each part to determine the best pumping rate. A sustainable groundwater management plan is crucial to maintain the natural resources and social benefits as well as to protect the ecological balance of Manukan Island.

Item Type: Article
Uncontrolled Keywords: Pumping, Recharge, SEAWAT-2000, Sustainable groundwater management, Water, Water balance, Artificial recharge, Chloride concentrations, Ecological balance, Groundwater management, Groundwater management plan, Groundwater storage, Hydraulic heads, International standards, Malaysia, Modeling studies, Numerical modeling, Pumping rate, Pumping well, Recharge, Recharge rates, SEAWAT-2000, Small island, Social benefits, Study areas, Study sites, Sustainable groundwater management, Sustainable management, Water balance, Water balance components, Water usage, World Health Organization, Chlorine compounds, Groundwater resources, Numerical models, Optical pumping, Pumps, Solvents, Water, Water conservation, Water management, Recharging (underground waters), Artificial recharge, Chloride, Concentration (composition), Groundwater resource, Hydraulic head, Numerical model, Pumping, Social impact, Sustainable development, Water budget, Water level Water management, Water planning, Water storage, Water treatment, World Health Organization, East Malaysia, Malaysia, Manukan Island, Sabah
Subjects: ?? GB1001-1199.8 ??
Divisions: SCHOOL > School of Science and Technology
Depositing User: ADMIN ADMIN
Date Deposited: 03 Dec 2012 08:05
Last Modified: 11 Oct 2017 01:00

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