Analyze the hydrogeological properties of unconfined and confined aquifers: Which of the following parameters defines the volume of water that a saturated aquifer releases from storage per unit surface area of the aquifer per unit decline in hydraulic head?

💡 Solution & Explanation

Storativity or the storage coefficient represents the volume of water an aquifer releases or takes into storage per unit surface area per unit change in hydraulic head. In confined aquifers, storativity reflects the compressibility of both the aquifer skeleton and the water itself. Specific retention measures the water retained against gravity by capillary forces after drainage. Hydraulic conductivity quantifies the ease with which fluids move through pore spaces and fractures.