Calculation of Abstractions Using GIS. Gaurav Garg CVEN 689 Dept Of Civil Engg. Presentation Objectives. Definition of Abstractions. Methodology Data Gathering Data Processing using GIS Analysis using MS-Excel Interpretation with GIS Results. Abstractions.
Dept Of Civil Engg
The part of the precipitation that does not contribute
to the runoff.
Main steps involved: -
For this project a constant precipitation of 6cms for 2 hrs has been assumed.
f(t) = infiltration at time t
F(t) = cumulative infiltration
Kh = Hydraulic conductivity
|Ψf|= Suction Head
(Φ-θ0)= Change in moisture content