Aquifer

Question 1

Transmissivity

Answer 1

The volume of water that can move horizontally through the saturated part of an aquifer

Question 2

Is an artesian well a confined or unconfined aquifer

Answer 2

Confined

Question 3

Storativity

Answer 3

(Storage coefficient)

The volume of water absorbed or expelled form storage per unit of surface area per unit of charge in hydraulic head

Question 4

Specific storage (Ss) is water stored or expelled due to:

Answer 4

1. compressibility of mineral matrix
2. Compressibility of pore water

—> per unit charge in head

Question 5

What is the general range of Ss for unconsolidated seds

Answer 5

10^-5 to 10^-2 (in m^-1)

Question 6

Is a water table well a confined or unconfined aquifer

Answer 6

Unconfined

Question 7

Specific yield

Answer 7

(Sy) is the storage per unit surface area per unit in water table elevation

Question 8

General range of sy

Answer 8

.02 -.3

Question 9

What types of storativity do you use for confined vs unconfined aquifers

Answer 9

Confined - S = Ss + b
—> caused mainly by compressibility

Unconfined - S ~ Sy
——> cause mainly by water table fluctuations