This document summarises a literature review and gap analysis of the existing flood warning network to identify recommendations related to the improvement of flood warning arrangements within the Lake Macquarie, Tuggerah, and Wyong River Basins. The aim of this report is to establish a prioritised list of recommended work packages that will improve flood warning within the study area. The work packages may include the installation or upgrade of existing Bureau of Meteorology's Service Level Specification (SLS) rainfall/water level gauges, the integration of non-SLS rainfall/water level gauges into the Bureau’s flood warning network, and the setup of flood forecast locations.