LOW IMPACT DEVELOPMENT (LID) OPPORTUNITIES IN THE DISTRICT OF LAMÚD, PERÚ: A STUDY OF HYDROLOGY, COSTS AND MAINTENANCE OF APPROPRIATE STORMWATER BEST MANAGEMENT PRACTICES (BMPs)

Abstract

The study aims at identifying opportunities to implement Low Impact Development (LID) Best Management Practices (BMPs) for stormwater management, in the District of Lámud, Perú. Other studies have noted the importance of appropriate stormwater management as part of urban development in developing countries. Environmental, economic and social aspects were analyzed to identify the most appropriate case. Stormwater Management Model (SWMM) 5.1, was used to obtain runoff results. Ten case scenarios were set up with LID BMP combinations of infiltration trenches, vegetated swales, and retention ponds. Water Environment Research Foundation (WERF) life cost models were used as a reference to calculate initial and maintenance costs. A Cost Benefit Ratio (CBR) was developed to identify the most cost effective case. Data on land use was collected and a Maintenance Probability Factor (MPF) developed to identify the likelihood of maintenance. Case 7 was recommend as it optimizes both CBR and MPF