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Eslulas Riparian Forest Ytennlat Stream 100 Year Floodplala �Committed Stawwara Meadow forlgfuteadoa Stormwater Measures to Form Greenways leaky for Sediment Caaol Gel Spreader for DI:tha wt dgrnfo• ea Riparian Form Beer Dodo Sure Detention Bala Strop Soli Cenmweud Woody Milani rah 1*fl t mdoa Derek's We Estonded Dote Basta • i 1 1 a: 1 3 3 rN &mkt for Whom Carrot stop Mope Ater - Cressy Swale Chockdasss Figure 8. The linkage of stormwater management measures forms greenways in the landscape. A perennial stream and flooded wetland are surrounded with a forest buffer. Stormwater conveyed through a grassy swale flows through a forebay and an extended detention basin before infiltrating through a constructed woody wetland with infiltration trenches. In the system above, all small flows are Infiltrated while larger flows are detained and slowly released. schedule of inspections, requirements for a performance bond, penalties for non com- pliance, and an appeal process. There are many benefits to such an ordi- nance. For the developer, it sets a rationale that will apply equally to every applicant. For residents of the municipality it is the ve- hicle through which water resources are being protected. Steps that are lacking in most current ordinances are a pre- and post- development assessment of streams that receive stormwater discharges, a review of safety and aesthetic considerations of the de- sign, a requirement for rigorous inspection during construction, an "as built" documen- tation of "hard" elements, annual inspec- tions, and the testing of measures (BMPs) in comparison with pre - development condi- tions. What is lacking most of all is a holis- tic approac that goes beyond peak flow control. ' SL ?water management and nonpoint pollution control have long been a concern of the states and of the federal government. Examples are the new NPDES permit regula- 20 JOURNAL OF SOIL AND WATER CONSERVATION tions (Section 319 of the Clean Water Act), and runoff control under the Coastal Zone Act Reauthorization Amendments of 1990. Success of any of these programs depends on municipal decision makers and their per- ception of the advantages of combining management measures into open space sys- tems as well as the public benefits of clean water. Open space greenways through stormwater management Stormwater management measures pre- sented here can be linked to form functional landscape elements on development sites and combined to form continuous stream valley systems or greenways. This opportu- nity was realized in London Grove Town- ship, Pennsylvania, (10) and Loudoun Coun- ty, Virginia, (9) where the author worked as a consultant, gaining the experience on which this article is based. A plan and ordinance ensures that