Calculator 11 - Slugtest Calculator

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BOUWER/RICE SLUGTEST CALCULATOR 
Calculate Hydraulic Conductivity from slugtest data using Bouwer and Rice method

STEP1 - Graph slugtest data - Log Head Vs. Linear Time.  Read h1,h2,t1,t2 from straight line part of curve.

STEP2 - Look up well construction paramters.

STEP3 - Enter test parameters.

h₁ (head at time t=t₁): 
h₂ (head at time t=t₂): 
t₁ (time at head h₁): 
t₂ (time at head h₂): 

Well Type:   fully penetrating well partially penetrating well
b (Aquifer saturated thickness):  
H (dist. from w. t. to bottom of pack):
L (length of the screened interval):

r_c (radius of casing):
r_w (radius of well):

Hydraulic Conductivity:   

 

Example Calculation

STEP1 - Graph slugtest data - Log Head Vs. Linear Time.

STEP 2 & 3 - Enter test parameters.

h₁ = 1.0 ft
h₂ = 0.2 ft
t₁ = 10 min
t₂  = 20 min

Well Type:  = Partially Penetrating
b = 100 ft
H = 50 ft
L = 15 ft

r_c = 0.083 ft
r_w = 0.33 ft

Hydraulic Conductivity =   0.00011 ft/min