A one$-$dimensional estuary has the following constant dimensions and flow:

Width $=1000ft$

Depth $=10ft$

Flow $=500cfs$

You measure the following chloride concentrations along its length $($note that mile points

increase toward the ocean$)$:

Determine the dispersion coefficient for the estuary in $c\frac{m^2}{s}.$ Hint: Use approach of

idealizing the system and solving the resultant equation.