Groundwater Flow Example

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Presentation transcript:

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

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

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

Anisotropy From Mays, 2011, Ground and Surface Water Hydrology