The US Geological Survey is offering a funding opportunity to a CESU partner for research on how hydrology and inundation affect Everglades tree island health and how tree island condition differs geospatially and with vegetation type. The USGS conducts ecological and hydrologic research and monitoring in support of Greater Everglades restoration efforts through South Florida, in conjunction with its Federal, State, and local partners. Research conducted by USGS scientists, and their research partners advance the understanding of Greater Everglades restoration and the potential influence of environmental change on ecosystem restoration. USGS research provides valuable information which contributes to decision-making during restoration. The USGS is offering an opportunity to CESU partners with existing tree island and Everglades vegetation expertise to compile and collect hydrologic and tree island data sets, perform quantitative analyses on how hydrology impacts tree island condition, and develop a set of criteria that can be integrated into ETree, a web application and decision support tool that shows hydrologic indicators at tree island locations in the Greater Everglades.