Agenda Packets - 1983/05/23 - Laserfiche WebLink

Home Browse Search

3-4 i� the channel to enlarge unless devices are used to protect the channel. The prolonged duration of flow saturates the banks to a greater extent and leads to increased streambank erosion. 5. Many facilities that are designed to control only a single storm event (10- or 100-year) do "Little or nothing to control more frequent storm events. Many citizens in the Atlanta area are complaining about the increased frequency of small flood events which the detention basins are not controlling. 6. Detention facilities are required regardless of what drainage facilities are located downstream. Thus, there are some detention basins that drain directly to large lakes with no flooding problems, major rivers where the amounts of water discharging from the development site is insignificant, and large undeveloped farm land areas with no apparent flooding problems. The esthetics and costs of detention basins can be a cause for major concern to both the developers and their clients, whether they are leasing commerical space or buying homes. Detention facilities can take on a park -like appearance and enhance the esthetic appearance of an area. 2. The more usual case is that these facilities are unsightly and detract from the general appearance of an area because the facilities are poorly designed and maintained. 3. The construction cost of on -site detention basins is often relatively inexpensive. 4. The real cost is in the land which must be used for the facility and t �o thus Left undeveloped. In residential areas several building sites 0'rQ fo� may have to be used, while commercial developments often lose" large �4� areas of very expensive land.