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A stormwater fee is a charge imposed on real estate owners for pollution in stormwater drainage from impervious surface runoff. This system imposes a tax that is proportional to the total impervious area on a particular property, including concrete or asphalt driveways and roofs, that do not allow rain to infiltrate. In other words, the more ...
The "rain tax" raised revenue to improve the stormwater management system while creating a financial incentive to minimize the construction of and replace current impervious surfaces. [4] Collection of the stormwater fee on impervious surfaces varied from annually on the property tax bill to quarterly on the water bill. [ 3 ]
Impervious surface percentage in various cities. The percentage imperviousness, commonly referred to as PIMP in calculations, is an important factor when considering drainage of water. It is calculated by measuring the percentage of a catchment area which is made up of impervious surfaces such as roads, roofs and other paved surfaces.
The property tax most citizens are aware of is known as an ad valorem tax. This tax is used to fund general or day-to-day government operations. An ad valorem tax is commonly levied on both real and personal property. A property tax is based upon a property's market value.
Flooded streets in New Orleans Relationship between impervious surfaces and surface runoff Urban runoff is a major cause of urban flooding , the inundation of land or property in a built-up environment caused by rainfall overwhelming the capacity of drainage systems , such as storm sewers . [ 12 ]
Relationship between impervious surfaces and surface runoff Industrial stormwater is runoff from precipitation that lands on industrial sites (e.g. manufacturing facilities, mines, airports). This runoff is often polluted by materials that are handled or stored on the sites, and the facilities are subject to regulations to control the discharges.
Parking lots tend to be sources of water pollution because of their extensive impervious surfaces, and because most have limited or no facilities to control runoff. Many areas today also require minimum landscaping in parking lots to provide shade and help mitigate the extent to which their paved surfaces contribute to heat islands.
Surface runoff in hydrologic systems is generally conceptualized as occurring from pervious and impervious areas. It is the pervious runoff that is affected by antecedent moisture conditions, as runoff from impervious surfaces such as roads, sidewalks, and roofs will not be significantly affected by preceding moisture levels. Pervious surfaces ...