The Madeira River Navigation and Improvement Project provides a unique opportunity to incorporate nature-based solutions (NbS) into the built environment to promote sustainable communities and water resources infrastructure. The Madeira River has no major physical interventions (river training structures, navigation locks and dams, etc.) to improve navigation, and so is one of the world's last remaining undeveloped megarivers that exhibits natural morphological processes. The objective of this study is to create a safe, reliable, and sustainable navigation channel in the Madeira River. This is being accomplished by designing navigation improvement measures that leverage natural geomorphic processes of the river while minimizing conventional engineering practices that alter the river's morphology. To meet this objective, fluvial geomorphology analysis and hydrodynamic modeling studies have been performed to improve understanding of the morphological behavior of the system. Measures that incorporate beneficial reuse of dredged sediment within the system are being prioritized and incorporated into the study's design. Natural processes are being leveraged through the implementation of an adaptive management process to shape the navigation channel by incorporating the use of dynamic structures using natural local materials (e.g., large woody debris already in the system), a direct application of NbS in practice. This process includes extensive stakeholder collaboration and utilizing nature's energy to balance navigation, ecological, and social benefits along the Madeira River. This project demonstrates that nature-based approaches not only provide navigation benefits but can also provide ecological and social benefits in ways that are sustainable in the long term, consistent with United Nations Sustainable Development Goals (SDGs) and the International Union for the Conservation of Nature's global standard for NbS. Integr Environ Assess Manag 2022;18:115–122. © 2021 SETAC. This article has been contributed to by US Government employees and their work is in the public domain in the USA.

中文翻译：

---

提高巴西马德拉河航行可靠性的基于自然的解决方案

马德拉河航行和改善项目提供了一个独特的机会，可以将基于自然的解决方案 (NbS) 融入建筑环境，以促进可持续社区和水资源基础设施。马德拉河没有重大的物理干预（河流训练结构、航行闸和水坝等）来改善航行，因此它是世界上仅存的具有自然形态过程的未开发的巨型河流之一。本研究的目的是在马德拉河中创建一个安全、可靠和可持续的航道。这是通过设计导航改进措施来实现的，该措施利用河流的自然地貌过程，同时最大限度地减少改变河流形态的传统工程实践。为实现这一目标，已经进行了河流地貌分析和水动力建模研究，以提高对系统形态行为的理解。将在系统内对疏浚沉积物进行有益再利用的措施被优先考虑并纳入研究设计。正在通过实施适应性管理过程来利用自然过程，通过结合使用使用当地天然材料（例如，系统中已经存在的大型木质碎片）的动态结构来塑造航道，这是 NbS 在实践中的直接应用。这个过程包括广泛的利益相关者合作和利用大自然的能量来平衡马德拉河沿岸的航行、生态和社会效益。2022 年整合环境评估管理；18:115–122。© 2021 SETAC。本文由美国政府雇员贡献，他们的工作在美国属于公共领域。