Groundwater Dams
An eco-friendly technology that installs water-blocking walls (impermeable walls) in underground sand and gravel layers to raise groundwater levels, prevent seawater intrusion, and ensure stable groundwater resources.
Project Basis : 『Groundwater Act』 Article 9‑6 (Installation for Securing Groundwater Resources, etc.) / Article 9‑8 (Support for Water‑Supply‑Vulnerable Areas, etc.) / 4th Groundwater Management Basic Plan (2022‑2031, Ministry of Climate, Energy and Environment)
Island·Coastal Areas
Inland Areas
Alluvial Fan
Old Riverbed
Features of Groundwater Dams, Site Conditions for Groundwater Dams
Features of Groundwater Dams
- Prevents water loss, ensuring a constant supply.
- Maintains water quality through natural filtration.
- Prevents flooding, avoiding displacement and minimizing impact.
Site Conditions for Groundwater Dams
- Regions with thick sedimentary layers such as alluvial fans, basins, river surroundings, riverbeds, or developed valleys.
- Areas close to demand locations and capable of integrating with existing facilities.
Groundwater Dams Installation Cases
Domestic Cases
| NO | Name | Purpose | Length(m) | Seepage Control Method | Development Volume(㎥/day) | Year of Construction |
|---|---|---|---|---|---|---|
| 1 | Yangdong (Yangpyeong‑gyeonggi) | Living | 311 | C.I.P Wall (Cast‑In‑Place Concrete Pile method) |
1,000 | 2025 |
| 2 | Bogildo (Wando‑jeonnam) | Living | 257 | Retaining‑wall type (Open cut) |
1,100 | 2023 |
| 3 | Anmado (Yeonggwang‑jeonnam) | Living | 412 | Stirred‑mixing method (NP‑jet) |
100 | 2021 |
| 4 | Daeijakdo (OjIn‑Incheon) | Living | 716 | Stirred‑mixing method (NP‑jet) |
110 | 2020 |
| 5 | Wooil (Jeongeup, Jeonbuk) | Agriculture | 778 | Continuous Wall | 16,200 | 1986 |
| 6 | Ssangcheon (Sokcho, Gangwon) | Residential | 840 | Injection | 25,000 | 1998 |
| 1,107 | 7,500 | 2021 | ||||
| 6 | Wooil (Jeongeup, Jeonbuk) | Agriculture | 778 | Continuous Wall | 16,200 | 1986 |
| 7 | Gocheon (Jeongeup, Jeonbuk) | Agriculture | 192 | Continuous Wall | 25,110 | 1986 |
| 8 | Okseong (Gongju, Chungnam) | Agriculture | 482 | Injection (Cement) | 27,900 | 1986 |
| 9 | Namsong (Pohang, Gyeongbuk) | Agriculture | 89 | Injection (Cement) | 23,600 | 1986 |
| 10 | I-an (Sangju, Gyeongbuk) | Agriculture | 230 | Continuous Wall + Injection | 24,000 | 1983 |
Overseas Cases (Approximately 1,000 Cases Worldwide)
- Modern Groundwater Dams began in Japan.
- Europe saw construction in the 1970s and 1980s in France, Austria, Germany, Italy, Greece, etc.
- In Africa, Kenya and Morocco used sand and gravel to prevent evaporation losses.
drag
Yangpyeong-gun
Sokcho Ssangcheon
Okinawa, Japan
Kindu, Kenya
Yangpyeong-gun Sokcho Ssangcheon Okinawa, Japan Kindu, Kenya