What is the drainage fee based on?
Drainage rates are based on a property’s impact on the drainage system. This impact is measured by the estimated amount of stormwater runoff which flows off of a property. Stormwater runoff is a function of the size of a parcel and what is covering it. Different types of cover absorb more water than other types. For example, an undeveloped landscaped piece of land will infiltrate more stormwater than a paved parking lot of the same size. Likewise, a 20,000 square feet parking lot will generate more run-off than a 10,000 square feet parking lot. To capture these differences, properties are assigned to rate categories which group properties with similar sizes and/or cover types.
