Open AccessDerivation of 6-hour unitgraphs for Barakar (D. V. C. ) and Yamuna catchments for flood forecasting
Author(s) -
Pankaja Narayanan,
S. C. Hasija,
D. V. L. N. Rao
Publication year - 1977
Publication title -
mausam
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.243
H-Index - 12
ISSN - 0252-9416
DOI - 10.54302/mausam.v28i3.2710
Subject(s) - hydrograph , flood myth , hydrology (agriculture) , environmental science , sample (material) , series (stratigraphy) , meteorology , unit (ring theory) , magnitude (astronomy) , diagram , statistics , mathematics , geology , geography , physics , paleontology , mathematics education , geotechnical engineering , archaeology , astronomy , thermodynamics
In this paper, series of unit hydrographs were derived assuming a 6-hr unit period for the Burukur and Yumuna catchments. The best fit unit hydrograph is selected mainly by the least square's method. Several important relationships to apply the method for operational use were also derived. These relationships are in the form of API initial loss relationships and the inter-relationship of rainfall intensity, loss rate and API.
Although the results are based upon a small sample, it has been possible to derive the above relationships. At the end a correction diagram IS also given to enable the user to correct the time of occurrence as well as the magnitude of the flood peak.