Lacustrine deposits are sedimentary in nature and are formed at the bottom of lakes by incoming water from rivers or streams. Lacustrine deposits can be revealed by conducting geotechnical investigation and may have different types of deposits. It's necessary to protect such naturally occurring formations as per the Environmental Protection Agency (EPA). When pipelines have to pass through such areas, trenchless construction methods such as directional drilling and pipe jacking can be used to conduct the crossing.
Trenchlesspedia Explains Lacustrine
There are also wetlands known as lacustrine wetlands which are swamps within lakes or reservoirs with shallow depth and growth of aquatic vegetation. These wetlands are situated in a topographic depression near a lake or a channel joining the lake. Lacustrine wetlands are at least 20 acres with less than 30 percent vegetation cover. Delicate flora, fauna and aquatic life inhabit these wetlands and are an essential part of a balanced environment. Contractors undertaking construction work near environmentally sensitive areas should use trenchless methods so that the natural formations and delicate ecological balance aren't disturbed.