Kubota B2320 w/4' Land Pride Box Blade, FEL, Middle Buster, Pirhana tooth bar
Mine's exactly the same. You probably have risers installed to make it easier to access the tank lids, and that's a good thing. They are usually 12-24" tall, your actual tank is much lower.
Having the tank pumped will require just removing dirt over the risers, not sure that adding dirt is the best idea.
Would be a bit of work, mix some hydrosource granules into the soil. It's a polymer that will absorb about 100X it's weight in water and helps to keep enough moisture in the soil between normal watering. Interesting stuff, a half teaspoon will soak up a 12 oz. glass of water.
Mine looks similar most years, including right now. I usually point it out to my son and wife, and act surprised as I ask "why does the grass look so crappy there?" They just roll their eyes at me now.