Plants form a blanket of runners on the soil surface.

This growth will break down the mulch that is left on the soil surface.

The tubers form close to the soil surface and sometimes even on top of the ground.

The process of infiltration can continue only if there is room available for additional water at the soil surface.

This often is buried just beneath the soil surface and may not be obvious.

The top rim should be level with the soil surface.

Maple roots have a tradition of growing near the soil surface.

The groundwater level is always less than 5 feet below the soil surface.

When planting, this crown should be set very near the soil surface.

The water table is at or near the soil surface for 6 to 9 months of the year.