Problem Statement
Stormwater is a leading cause for water pollution. It runs off solid surfacesand collects
pollutants such as oil, pesticides, sediments, bacteria, and other chemicals, and then
deposits them into the waterways. This runoff can kill aquatic life, and make the
waterways an unhealthy place to live, work, and play. Untreated stormwater entering our
streams can result in the contamination of our drinking water supplies or shell fishing
waters; prohibitions on swimming, fishing or boating uses; injury to aquatic plants and
animals; dangers to public health; and increased flooding.
Storm water runoff problems and impacts are most evident in areas where urbanization
has occurred. Changes in land use have a major effect on both the quantity and quality of
storm water runoff. Urbanization, if not properly planned and managed, can dramatically alter the natural hydrology of an area, because it increases impervious cover. Impervious
cover decreases the amount of rainwater that can naturally infiltrate into the soil, and
increases the volume and rate of storm water runoff. These changes lead to more
frequentand severe flooding, and therefore potential damage to public and private
property.
Improper design of drainage is also a problem of erosion at the municipals, sides of
streets. There for it is required from a Hydraulic engineers to design suitable conveyance
structure using storm CAD and related software.