Question $2\mathrm{.}3(4\mathrm{.}5$ points$)$: In an agricultural area, very shallow water tables occur. Therefore, a subsurface drainage system is installed to control the water table. The Hooghoudt equation, which is used to describe the flow of groundwater to parallel field drains under steady$-$state conditions, is given as follows: HW Assignment $2[$PSS $4337]$ Page $2$ of $322$ where, q : drainage discharge rate at the midpoint b i etween the drains h : maximum elevation of water table $($midway between the drains$)$ above the water level $8$KDh $+4$Kh q $=$ L K: D: elevation of water level g in the drain of the soil $($i$.$e$.,$ d n epth to the impervious y layer be h u low t u he t dr y a n i a n e d l t e n v c e c l l $)$ d t v L a : h ri r i o d ci i drain spacin Assume that the water level in the drain is very low, and the above equation describes the flow above the drain level. The soil has a hydraulic conductivity of $32\mathrm{.}5$ cm h$1.$ The drainage discharge rate at the midpoint between the drain lines is $5\mathrm{.}2$ cm h$1.$ The drain line spacing is $4\mathrm{.}7$ m$.$ Estimate the depth of the water table midway between the drains.