In developed areas, buildings and parking areas overcome the natural absorption area where rain and stormwater would normally be infiltrated back into the ground. These impervious structures offset the typical absorption pattern. As a result, when the rain is not allowed to penetrate it begins to build up, causing ponding or flooding, or begins to flow to other unwanted locations. Plastic stormwater chamber systems help manage stormwater and prevent costly damage that results from unmanaged stormwater.