The methods used for land drainage may be classified i n two broad categories-- surface drainage and subsurface drainage--depending on the way the water is removed.

The Manual on Drainage Design for Highways was adopted in 1966 with the purpose of bringing uniformity in the design of drainage structures while conforming to accepted policies of the Georgia …

Design surface drainage, underground drainage systems, stormwater management facilities, and erosion and sediment control in accordance with the applicable requirements of the local regulatory …

The Highway Drainage Guidelines published by the American Association of State Highway and Transportation Officials (AASHTO) and the AASHTO Model Drainage Manual will also provide useful …

Rainfall and melting snow and ice are sources of surface water. Drainage of surface water involves three general objectives: Surface water flowing in a natural watercourse is allowed to pass through an …

Drainage and Utilities tools are used to model and analyze stormwater, wastewater, water distribution, and dry utility (i.e., Fiber Optic, Gas, and Electrical) networks.

Both types of drainage systems can be divided into two classes: relief drainage and interception drainage. Relief drains are used when the water table is close to the ground surface and the area is …