Seasonal drivers of geographically isolated wetland hydrology in a low-gradient, Coastal Plain landscape

•Explored the impacts of climatic drivers on wetland and downstream waters.•Demonstrated strong correlations among climatic seasonality, wetland and downstream waters.•Detected dissimilar hydrologic responses between wetland and downstream waters.•Inferred hydrologic connectivity between wetland and downstream waters.•Emphasized a critical role of climatic drivers on wetland hydrology and connectivity to downstream waters.