Exam/Lab Exam 3 Equations Flashcards
1
Q
1 mile = ? ft
A
1 mile = 5280 feet
2
Q
Stream discharge
A
Q = WDV
Discharge = width * depth * velocity
Volume cubed/time
3
Q
Recurrance interval
A
RI = (N+1)/M
RI = (# of years of data + 1)/magnitude or rank of event
Predicts frequency of flooding events
4
Q
Ghyben-Herzberg Equation
A
Freshwater lense = x + 40x
Where x = distance between ground & water table
5
Q
Darcy’s law
A
Q = K(dh/dl)A
Q = discharge of groundwater
K = hydraulic conductivity (permeability)
dh/dl = hydraulic gradient (slope)
A = area of aquifer system
