This chapter presents a detailed methodology for evaluating planning strategies for rejuvenating water bodies, focusing on the National Capital Territory (NCT) of Delhi, India. The methodology includes six main steps which includes (i) a detailed literature review, (ii) a theoretical framework, (iii) a conceptual framework section, (iv) a systematic survey and data collection for city level and for selected case study areas, (v) data analysis at both city and case area levels and (vi) finally a proposed comprehensive planning framework. Key quantitative analytical tools are used for hypothesis testing at city and case areas level, social network analysis, and qualitative coding using NVivo. Primary data is collected via direct observation, structured interviews, and stakeholder surveys, supplemented by secondary sources. The study combines parameters and indicators from theories of Integrated Lake Basin Management (ILBM) and Collaborative Planning (CP), with emphasis on the stakeholder participation and the interaction of institutional, technological, financial, and policies implementation and information dimensions. The analysis reveals low to moderate performance across most governance and participation indicators, with significant gaps and challenges in inter-agency coordination among institutions, stakeholder engagement, technology and finances adequacy, policies implementation and information sharing. The main methodological contribution of this chapter is the formation of a mixed-methods framework for combining ILBM and CP, both qualitative and quantitative measures to demonstrate its applicability at both city and local levels. This study finally offers a planning framework which provides a structured, evidence-based pathway for water body rejuvenation that can be adapted to similar urban contexts, offering policymakers, planners and practitioners a practical basis for coordinated and sustainable actions.