Uncertainty assessment of multi-parameter, multi-GCM, and multi-RCP simulations for streamflow and non-floodplain wetland (NFW) water storage

•Explored climate change data and hydrological model uncertainties in wetland hydrology.•Predicted streamflow and non-floodplain wetland (NFW) water storage for uncertainty assessment.•Demonstrated differences in predicted outputs by the selection of parameters, GCMs, and RCPs.•Identified GCM as the greatest uncertainty contributor, followed by parameter and RCP.•Highlighted consideration of parameters, GCMs, and RCPs for wetland hydrology predictions.