- Rainfall-runoff modeling and parameter estimation
- Operational streamflow forecasting
- Climate variability and land-atmosphere interactions
- Coupled fluxes of heat, moisture, and carbon at the land surface
- Nonlinear dynamics of coupled hydrologic systems
- Remote sensing of land surface parameters and processes
- Data assimilation
- Hydrometeorology and precipitation processes
- Numerical simulation of groundwater flow and contaminant transport
- Inverse problems in distributed parameter systems
- Experiment design for parameter estimation and model prediction
- Modeling and optimization of seawater intrusion barriers
- Optimization of large scale water resource systems
- Conjunctive use of surface water and groundwater for sustainable management of water resources in semi-arid regions