1. Groundwater Flow Example
K=15 m/day
47.3 m
42.8 m
A confined aquifer with a porosity of 0.18 is 25 m thick. The potentiometric surface elevations at observation wells 800 m apart are 42.8 m and 47.3 m. If the hydraulic conductivity is 15 m/day determine:
The flow rate per unit width of the aquifer
Specific discharge
Average linear velocity
Travel time for tracer between wells
The intrinsic permeability (if the temperature is 20 oC)
Suppose the same material and conditions were present for temperature of 4 oC what would be the flow rate/unit width

2. Alluvial floodplain flow
K=0.75 m/day
dh/dl=10/1000 = 0.01

3. Aquifer Anisotropy and general flow equations
Objective
To be able to quantify the anisotropy of an aquifer due to layering
To be able to describe the equations used in general groundwater flow calculations

4. Anisotropy
From Mays, 2011, Ground and Surface Water Hydrology