TableĀ 1.

Groundwater recharge factors used in this approach

ParametersData typeSource
Surface parameters
Outcrop lithologyMapGeological map of Tunisia
SlopeCategorized from topographic mapTopographic map + remotely sensed data
Soil typeMapPedological map + remotely sensed data
Drainage densityCategorized from topographic mapTopographic map
Land coverInterpreted from remotely sensed dataLandsat data
Aquifer-related parameters
Aquifer mediumMapGeological map + cross-section
Lineament densityCategorized from geological mapGeological map
Vadose zone impactMapCross-section correlations
Groundwater flowMap established from piezometric dataPiezometric data interpretation
Hydraulic conductivityMap established from pumping testsPumping tests interpretations