Nature-Based Design Standards: Past, Present, and Future

Nature-based solutions (NbS) are increasingly recognized as effective tools for climate adaptation, yet their implementation remains limited by the perception that engineering guidance is lacking. This paper examines the existing spectrum of available guidance, ranging from informal case studies to peer-reviewed literature and state-level manuals, highlighting the need to clarify which types of standards are most useful across project types and contexts. Drawing on historical precedents, current practices, and recent advances in evaluating performance, we argue that a body of data and design knowledge exists but is decentralized and underutilized. We propose the creation of a Natural Infrastructure Engineering Hub (HUB) to centralize NbS resources, support adaptive learning, and promote the development of NbS-specific guidance that can evolve as more projects are designed, built, and monitored. Through cross-sector collaboration and phased implementation, the HUB offers a pathway to scale NbS with confidence, rigor, and transparency.