Urbanization has some substantial impacts on a watershed hydrology including increased surface runoff flow rate and volume, quicker to peak, decreased infiltration and evapotranspiration. To account for these effects in…
Urbanization has some substantial impacts on a watershed hydrology including increased surface runoff flow rate and volume, quicker to peak, decreased infiltration and evapotranspiration. To account for these effects in…
In addition to various unit hydrograph transform methods and SWMM nonlinear reservoir runoff method, InfoWorks ICM also has a built-in rational routing model for rainfall-runoff process. To utilize the Modified…
SCS Curve Number (CN) method, proposed by USDA Soil Conservation Service (SCS, now known as NRCS), has been widely used for infiltration loss and runoff calculation due to its simplicity…
Unit hydrograph transform method for precipitation-runoff process is widely used by many H&H modeling tools, but EPA SWMM has its own method known as nonlinear reservoir runoff method which treats…
Time of Concentration (TOC or Tc), one of the most important hydrologic parameters for runoff calculation and modeling, is defined as the time it takes a drop of rainfall to…
InfoWorks ICM is a powerful hydrologic and hydraulic modeling tool. As its name suggests, ICM - Integrated Catchment Modelling, InfoWorks ICM is capable of simulating 1D network and 2D surface…
InfoWorks ICM is a powerful hydrologic and hydraulic modeling tool. As its name suggests, ICM - Integrated Catchment Modelling, InfoWorks ICM is capable of simulating 1D network and 2D surface…
As one of the theory-based infiltration methods, Green-Ampt method is widely used in hydrologic modeling to account for loss from infiltration. Green-Ampt method was initially developed for ponded infiltration into…
In HEC-RAS 2D Rain-on-Grid (ROG) modeling, three layers are needed to model the infiltration loss and the procedures to create the three layers have been discussed before. Land Cover Layer…
In addition to loss through infiltration, during a precipitation-runoff process other losses may need to be accounted for which include canopy interception, surface depression storage or initial loss, and evapotranspiration…