Robust and accurate schemes are designed to simulate the coupling between subsurface and overland flows. The coupling conditions at the interface enforce the continuity of both the normal flux and the pressure. Richards’ equation governing the subsurface flow is discretized using a Backward Differentiation Formula and a symmetric interior penalty Discontinuous Galerkin method. The kinematic wav...

This paper deals with the problem of flood generation and propagation at catchment scale. The main aspect of the work is the use of 2D fully dynamic shallow water equations as tool of analysis for spatial and temporal overland flow evolution starting from an observed or predicted rain input. The paper firstly focuses on the model description. The governing equations and the numerical integratio...

Understanding microbial pathogen transport patterns in overland flow is important for developing best management practices for limiting microbial transport to water resources. Knowledge about the effectiveness of vegetative filter strips (VFS) to reduce pathogen transport from livestock confinement areas is limited. In this study, overland and near-surface transport of Cryptosporidium parvum ha...

Life-history characteristics are an important determinant of a species' dispersal abilities. We predict that variation in life history can influence population-level genetic patterns. To test this prediction, we estimate population-level genetic structure for two sympatric species of stream-breeding salamander. The Cope's giant salamander (Dicamptodon copei) rarely metamorphoses into a terrestr...

To explore the characteristics of overland flow resistance under condition sparse vegetative stem coverage and improve basic theoretical research flow, were systematically investigated four slope gradients (S), seven discharges (Q), six degrees vegetation (Cr). The results show that Manning roughness coefficient (n) changes with ratio water depth to height (h/hv) while Reynolds number (Re), Fro...

Recent research on rill flows recognised that an 18% slope can be used to distinguish between ‘gentle’ and ‘steep’ cases for the detected differences in hydraulic (flow depth velocity) sediment transport variables capacity, actual load). The effects of flow velocity, friction factor capacity their interactions affect process-based erosion modelling. main aim this paper is investigate, first tim...

Overland and shallow-subsurface flows from agricultural catchments are believed to contribute towards flood-risk water-quality degradation across the globe. Hedgerows commonplace features that may disrupt these rapid hydrological pathways. Research into functioning of hedgerows is very limited however, with no field-based quantitative comparison overland-flows within versus other land-uses. Thi...