Performance Evaluation of Jakarta Polder Based on the Sustainable Urban Polder Model (SUPM)

Abstract

Although economic and institutional reports have yielded relevant insights, they have not been linked to the polders’ performances since the Jakarta flood control study 2004. As a result, two crucial shortcomings have arisen: the absence of an integrated conclusion and a deficiency in model assessment. The Sustainable Urban Polder Model (SUPM) was developed to integrate Technical, Financial, and Institutional (TFI) aspects to address this gap. This research addresses two core questions: First, what is the structure of the SUPM? Second, what insights can be gleaned regarding the Polder Boards? This research aims to formulate SUPM and investigate the Polder Board’s impact on Pluiton Pulo Mas and Pantai Indah Kapuk (PIK) Polders. The formulation of SUPM is conducted using the Partial Least Squares- Structural Equation Model (PLS-SEM). Further, the PLS-SEM’s i) R2 is utilized as model validation and ii) the weight-value to describe the impact of inter TFI. The sustainable management construct’s R2 of Pluit, Pulo Mas, and PIK attain 49.2%, 35.9%, and 96.2 %, respectively. The polder’s technical construct’s R2 towards inundation in Pluit, Pulo Mas, and PIK Polders, respectively, attains R2 = 68.3%, R2 =94.5% and R2 = 26.0%. The pathway of Sustainable Management towards Open Water reveals that PIK Polder has a positive contribution (+0.606) due to its operational management. Conversely, Pluit and Pulo Mas Polders exhibit negative weight values (-0.396 and -0.866, respectively), indicating the risk of inability to maintain the open water storage. Consequently, establishing Polder Boards is essential for these polders.