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A Study on Obtaining Waters to Restore the Water-ecosystem of Deokjin Pond in Jeonju: New Paradigm for Restoration of Urban Reservoirs
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  • Journal title : Economic and Environmental Geology
  • Volume 48, Issue 6,  2015, pp.467-475
  • Publisher : The Korean Society of Economic and Environmental Geology
  • DOI : 10.9719/EEG.2015.48.6.467
 Title & Authors
A Study on Obtaining Waters to Restore the Water-ecosystem of Deokjin Pond in Jeonju: New Paradigm for Restoration of Urban Reservoirs
Choi, Seung-Hyun; Kim, Seok-Hwi; Lee, Jin Won; Kim, Kangjoo; Oh, Chang Whan;
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The Deokjin Pond is one of the places representing Jeonju City`s history but has the poor water quality. The pond has a storage of and a drainage area of . It has been maintained only by the groundwater pumped from the upstream wells and the direct rainfalls on the water surface since the old streams replenishing the pond were turned into a part of the sewer system due to indiscreet urbanization. The lack of replenishing water as well as the organic-rich bottom sediment were suggested as two main causes deteriorating the water-ecosystem. In this study, possible measures obtaining waters for restoration of Deokjin Pond ecosystem are discussed. It is estimated that the present pond can be replenished about 32 times a year by the runoff when the drainage system in the watershed is recovered to a state before urbanization. To support this, the drainage system is compared with that of nearby Osong Pond, which shows relatively better water-ecosystem. Even though Osong Pond has a drainage area one-seventh of that of Deokjin Pond, its storage is more than the half of it. It is because its watershed has a near natural drainage system where the rain mostly infiltrates into soil and slowly discharges into the pond. Therefore, it is believed that the low impact development (LID), which is known as a technique restoring the water circulating system to a condition before development, would be helpful in obtaining waters required for Deokjin Pond ecosystem management.
Deokjin Pond;water-ecosystem;infiltration;drainage system;LID;
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