Groove design features water
- shallow groove depth from 0.3 to 1.5 meters wide and 0.3-0.9 m below ground surface
- packed gravel or broken bricks at the bottom of the trench. The opening of the water
- longitudinal grooves around 18.29 to 30.48 meters (60-100 feet)
- the deep and narrow grooves are wide and shallow groove better.