It all started when our septic drainfield had to be replaced. In order to meet new codes, the entire drainfield had to be elevated and a pump installed. This left us with a yard full of sand and dirt. Luckily, the elevated mound was only about a foot taller than it had been previously.
We probably would have left it this way for months, until we got around to it . . . but, it was still the tail end of the Florida rainy season. Each day, a little more of our yard was literally washing away. . .