This document establishes the legal framework and administrative boundaries for the Thames Regional Flood Defence Committee as mandated by the Water Act 1989. The text serves as a formal statutory instrument issued by the British government to define the operational jurisdiction and committee structure necessary for managing flood risks within the Thames region. It provides the regulatory basis for water management authorities to execute their duties regarding flood prevention and land drainage.

Legal professionals and historians of public policy utilize this document as a primary source for understanding the evolution of water management governance in the United Kingdom. Experts note that the text is strictly procedural and lacks the explanatory context found in modern policy white papers.