Name:__________________________________
1. Define Darcy’s Law, give units of each term
2. Define Storativity of an aquifer.
What are the basic units [M,L,T] of storativity?
3. What is the difference between hydraulic conductivity and permeability?
3a. What are the basic units of hydraulic conductivity?
3b. What are the basic units of permeability?
4. Define the transmissivity of an aquifer, give units
5. Define specific storage of an aquifer, give units
6. What are the major cations that occur in ground water? Give their charge?
7. What are the major anions that occur in ground water? Give their charge?
8. What is the maximum concentration of dissolved ions in fresh water?
9. Define hydraulic head. What are the basic units of hydraulic head
Name:__________________________________
Give approximate values of hydraulic conductivity for the following materials.
Only fill in one column using the units you prefer
K (cm/s)
K (m/s)
Gravel
Well sorted,
medium-grained
sand
Silty sand
Silt
Clay
Approximate values of Specific Storage
Material
Ss (1/ft)
range
Clay
Sand and gravel
Jointed rock
Intact rock
Water
Approximate values of Storativity
Storativity
Unconfined well-sorted sand
Unconfined silty sand
Confined sand, 100 ft thick
K (m/day)
K (ft/min)