Circular Depression

Circular Grassed Depressions are like rain groves but they are smaller and contain only grass within the depressions. When used they are often used in great number and are rarely over six (6) inches deep.  When tens or hundreds of these are used over a grassy lawn they impart a special texture due to the shadow and color effects they give to the landscape. Buy more importantly they soak up rain water and increase its infiltration. Size these small circular depressions from 36 inches to 72 inches in diameter.

 

A field of circular depressions, not to exceed sixty (60) percent of its immediate drainage area will be an interesting aesthetic addition to a property. It will absorb rain fall just as a sponge will do with the depressions that form its surface. Wetland plants such as iris, lizard’s tail, black rush, pickerel weed or delta duck potato can be planted in the circular depressions within the interior of the field for contrast. Use a six (6) inch to twelve (12) inch flow diffuser on the up slope sides of the facility field.