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[Evaluating ground water vulnerability in West Lake Watershed by using DRASTIC model]
Liang Dong1, Yinmei Zhu, Qinhai Hu
1Department of Environment Science, Zhejiang University, Hangzhou 310029. dongL@bigfoot.com
Summary
Groundwater pollution vulnerability was mapped using GIS and the DRASTIC model in West Lake Watershed. Residential areas pose a high risk, requiring prioritized wastewater management to protect water resources.
Area of Science:
- Environmental Science
- Hydrology
- Geographic Information Systems (GIS)
Context:
- West Lake Watershed faces potential groundwater contamination risks.
- Environmental databases are crucial for watershed management.
- Land use patterns significantly influence groundwater vulnerability.
Purpose:
- To establish environmental databases for West Lake Watershed.
- To create a groundwater pollution vulnerability map using GIS and the DRASTIC model.
- To identify critical areas susceptible to groundwater pollution based on land use.
Summary:
- Basic and special environmental databases were compiled using the Blackland GRASS Geographic Information System (GIS).
- A groundwater pollution vulnerability map was generated by integrating GIS with the DRASTIC model.
- High susceptibility areas were identified, with residential zones comprising 14.7% and necessitating prioritized wastewater treatment.
Impact:
- Identified critical areas for targeted groundwater protection strategies.
- Highlights the need for improved wastewater infrastructure in residential zones.
- Provides a data-driven approach for sustainable watershed management and pollution prevention.