| Citation |
Denny, S., Allen, D.M., and Journeay, M.; 2007; DRASTIC-Fm: A modified vulnerability mapping method for structurally-controlled aquifers. Hydrogeology Journal, 15: 483-493. Doi: 10.1007/s10040-006-0102-8 |
| Abstract/Description or Keywords |
DRASTIC, the methodology for mapping the intrinsic vulnerability of aquifers, is modified to incorporate the structural characteristics of fractured bedrock aquifers. In these aquifers, groundwater flow is predominantly through fractures, with large-scale fracture zones and faults acting as primary conduits for flow at the regional scale. The methodology is applied to the southern Gulf Islands region. Bedrock geology maps, soil maps, structural measurements, mapped lineaments, water-well information and topographic data, assembled within a comprehensive GIS database, form the basis for assigning traditional DRASTIC indices, while adding the structural indices necessary for capturing the importance of regional structural elements in recharge and well capture zone determinations. |
