I've linked to some photos of the arena and surface water for context.
The soil is Georgia red clay (we live about 30 miles north of Atlanta).
As you can see from the pics, the problem end of the arena has been cut out of a bank.
Our area is quite rocky. Digging random holes 4 to 6 ft deep...
Recent abundant rainfall has left my wife's riding arena filling with water. We suspect the water table has risen and, as we see bubbling patches here and there, we suspect wet weather springs.
In previous rainy seasons we solved the problem by digging a small pit in one corner and installing a...
