The paper outlines recent and ongoing research addressing the quantification of river flood frequencies at ungauged sites across Britain. The approach is one of modelling continuous time series of catchment runoff. Model parameters are established where data permit: the spatial generalisation to ungauged sites is effected by relating model parameters to widely available catchment properties whi...

geographic information and analysis provide a wide range of data and techniques to monitor and manage natural resources. as an important case, in arid and semi-arid areas, water management is critical for both local governance and citizens. as a result, the estimation of water potential brought by snowmelt runoff and rainfalls seems to be very useful and important for these areas. hydrological ...

The amount and intensity of runoff on catchment scale are strongly determinedby the presence of impervious land-cover types, which are the predominant cover types inurbanized areas. This paper examines the impact of different methods for estimatingimpervious surface cover on the prediction of peak discharges, as determined by a fullydistributed rainfall-runoff model (WetSpa), for the upper part...

The estimation of the amounts Surface runoff resulting from rainfall in water basins is great importance resources management. study area (Bahr Al-Najaf) located on western edge plateau and southwestern part city center Najaf, with an 2729.4 (km2). soil assessment tool (SWAT) ArcGIS software was used to simulate coming three main valleys (Kharr (A B)), Shoaib Al-Rahimawi, Maleh), that contribut...

Rainfall runoff models are used to estimate design floods. These models require several inputs such as, rainfall duration, intensity, loss etc. For baseflow separation in design flood estimation the estimation of continuing loss (CL) is vital. The surface runoff has to be separated from the stream flow hydrograph. To obtain the volume of surface runoff, the use of an appropriate baseflow separa...

The stormwater runoff and infiltration performance of pavement structures has been systematically evaluated within an extensive research project. Over 230 field and lab scale experiments have been completed and analyzed for surface runoff and infiltration characteristics as well as for water content changes inside the construction. The test series comprises several types of conventional and exp...

Design of water infrastructures requires estimation of design flow which is the runoff that an infrastructure can handle safely. For estimation of this design flow, rainfallrunoff modelling is widely adopted. Temporal pattern (the distribution of rainfall depths over sub-storm durations) is considered to be one of the most critical input variables in the rainfall-runoff modelling. Design tempor...