Estimating the level of stormwater control based on ordinance enactment dates

摘要

Like many municipalities that have experienced significant growth from the latern1940's to the present time, Fairfax County's stormwater infrastructure information hasrnbeen very piecemeal in nature. In order to support the development of managementrnplans for the County’s watersheds, the level of stormwater controls were estimated byrnquerying real estate tax records in relation to when key stormwater managementrnordinances were enacted. In this paper we describe procedures used to generaternestimates of the level of stormwater management controls countywide. The results ofrnimplementing the procedures within a GIS framework are presented. Preliminaryrnevaluation of the results suggests the approach provides useful planning levelrnestimates of controlled and uncontrolled areas.