Wetlands are productive ecosystems, providing an array of services that sustain the well-being of dependent biota. Post industrialization and globalization era witnessed a spurt in the anthropogenic activities, leading to the degradation and decline of fragile ecosystems. This necessitates the conservation of vital ecosystems through sustainable management tenets, this requires an understanding of the livelihood support of ecosystems. The focus of the study, discussed in this article, is to understand the worth of wetlands through the accounting of provisioning, regulating, and cultural services. The provisioning services through accounting of tangible benefits (fish, fodder, water, etc.) considering residual values indicate an annual revenue of INR49.70 billion. Similarly, accounting of non-use values of ecosystems through the benefit transfer method indicates regulating and cultural services support of INR196.89 billion and INR37.93 billion per year, respectively. The annual flow of the total ecosystem supply value accounts for INR284.52 billion per year and the net present value (NPV) amounts to INR7320.6 billion, signifying the ecological, socio-cultural, and environmental support wetland provides to ecosystems in Karnataka. Appraisal of ecosystem services allows for adjusted national accounts, which reflect the output of ecosystem services as well as the depletion of natural resources and the degradation costs (externalized costs of the loss of ecosystem services) of ecosystems in economic terms, which will help raise awareness and provide a quantitative tool to evaluate the sustainability of policies towards prudent management and conservation of fragile livelihood-supporting ecosystems. The monetary valuation of ecosystem services can help in building a better understanding of their influence on well-being and can further facilitate information-driven decisions and policy reforms that align with the Sustainable Development Goals (SDGs) through the judicious use of natural resources.

Purpose of the study: The main objective of the present work is to assess the efficacy of the restoration endeavour in Bengaluru lakes, Karnataka, India. Rapid urbanisation coupled with industrialisation in urban areas has greatly stressed the available water resources qualitatively and quantitatively. This has also resulted in the generation of enormous sewage and wastewater after independence. Method:  Environmental monitoring of 40 restored lakes was carried out to identify the key issues and assessing water quality (physical, chemical and biological). Weighted arithmetic water quality index (WQI) and Pearson’s correlation coefficient (r) was determined using data of physicochemical parameters of lakes. Principal Component Analysis (PCA) performed using PAST3 software to identify the factors responsible for variations in water quality. Main Findings: The monitored forty lakes distributed across the three major watersheds namely Koramangala and Challaghatta valley, Vrishabhavathi valley and Hebbal valley were grouped under three different WQI status like good water quality (10%); poor water quality (37%) and very poor water quality (53%). Majority of these restored lakes has become polluted which indicates improper decontamination and poor maintenance of restored lakes. Application of this study: This study provides vital information for policymakers to understand the gaps which helps in the course correction while implementing further rejuvenation of lakes. Novelty/Originality of this study: The efficacy of rejuvenation was assessed through integrated cost-effective scientific approaches for the lake monitoring.  Monitoring during the pre and post rejuvenation period has aided in assessing the efficacy of rejuvenation, which is done for the first time in India.