Hydrogeological Parameters | Equation | Author | Values | |
Rate of Delivery | / | / | Raghunath (2006) |
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Rate of Seepage (Qseepage) | Qseepage = (Q t – ((π D2/4) × d))/t | D = diameter of the well (m). d = depth of water column (m). Q = pumping rate (m3/hour). t = time required for emptying the well (hour). | Raghunath (2006) | 10.95 m3/hour |
Specific Yield (Sy) | Sy = (2.303/T) log10 s1/s2 | s1/s2 = desidual drawdown ratio T = Time required for water level rising (hour). | Raghunath (2006) | 8.546 hr−1 |
Specific Capacity (Sc) | Sc = Sy × A | Sy = Specific yield of the stream deposits. A = Area of the dug well section | Raghunath (2006) | 90.624 m2 day-1 |
Safe Yield (Qy) | Qy = Sy A H | Qy = safe yield of the well (m3/s). A = area of cross section of the well (m2). H = Safe working depression head (m). Sy = Specific yield of the soil. | Raghunath (2006) | 176.694 m3/day |
Transmissibility (T) | T = Sc × 1.2 | T = Transmissibility (m2/d). Sc = Specific Capacity | Raghunath (2006) | 108.749 m2/day |
Hydraulic Conductivity (K) | K= T/H | T = Transmissibility (m2/d). H = Saturated thickness (m) | Raghunath (2006) | 51.79 m/day |
Yield of Alluvial Bed (QG) | QG = K A dh/dl | A = Cross sectional area (m2) K= Hydraulic conductivity (m/day) dh/dl= Hydraulic gradient | Darcy’s Law | 308.876 m3/day |
Packer Test | T = Q ln(R/rb)/2π Pi Kp = T/L | T = transmissivity (m2/day). Q = injection rate (m3/day) and it was Zero. R = radius of influence (m). rb = radius of borehole (m). Pi = net injection pressure (m). T = Transmissivity (m2/day). L = Length of test zone and equal to 3 m. | Brassington (2007) | 0 |