Open AccessModification of basic hydrology formulation based on an approach of the rational method at field measurement
Author(s) -
Martheana Kencanawati,
Nadjadji Anwar,
M A Maulana
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/930/1/012051
Subject(s) - surface runoff , watershed , hydrology (agriculture) , infiltration (hvac) , simple (philosophy) , field (mathematics) , precipitation , environmental science , probabilistic logic , simplicity , flow (mathematics) , computer science , mathematics , soil science , meteorology , statistics , geology , geotechnical engineering , geography , ecology , geometry , philosophy , epistemology , machine learning , pure mathematics , biology
The rational method was a simple technique for estimating the design discharge of a small watershed and can be used in a probabilistic approach. The main parameter in the rational method formula was the C coefficient. The rational method was the primary method for determining the peak discharge from surface runoff flow. At the end of the dry season and the beginning of the rainy season, it placed an automatic water level recorder and automatic rain gauges for the initial water level. This field research aimed to correct a simple hydrological formulation with field measurements and build a numerical rainfall modelling based on rainfall simulation, infiltration, land use, and flow parameters according to the relationship model of precipitation. The hypothesis in this study, the basic formulation of hydrology, is simple: it requires experience to fit the theoretical hydrological formula so simply (simplicity). The theory needs to be simplified because it is an experience of field necessary to explain.