watershed hydrograph simulation?

Dear OGS community members,

I am new to OGS and would like to understand better the functionality of OpenGeosys. Can it simulate the runoff process (flooding) within a watershed (including both surface and subsurface runoff) and generate hydrograph at the watershed outlet? Does it include overland flow and channel flow components for conducting fully physically based modeling? I am looking for tools to simulate coupled surface-subsurface runoff and think OGS may have good potential for that.