This paper circulates around the core theme of a. Estimate time of concentration in minutes if velocity of flood flow in ABDEC together with its essential aspects. It has been reviewed and purchased by the majority of students thus, this paper is rated 4.8 out of 5 points by the students. In addition to this, the price of this paper commences from £ 12. To get this paper written from the scratch, order this assignment now. 100% confidential, 100% plagiarism-free.
he lower part of a catchment in Mt Helen, Ballarat, Victoria shown as trapezoid BDEC in Fig. Q3,
has undergone extensive urbanization. Pre-development runoff coefficient for the whole
catchment, ABDEC, is estimated 0.15 while post-development runoff coefficient for the lower part,
BDEC, has changed to 0.6. Runoff coefficient for the upper part of the catchment, ABC, remains
the same as that of pre-development. (Areas of ABC and BDEC are 125,000 and 250,000 m2
a. Estimate time of concentration in minutes if velocity of flood flow in ABDEC
catchment longest floodway, thalweg, reaches a maximum of 1m/s.
b. Calculate flood peaks for 5 year return period at the outlet, G, for both pre and
post development conditions.
c. Calculate flood peak for a culvert to be installed as the minor system of the artillery
road shown on the map.
d. What would be approximate diameter of the culvert if its full flow velocity is assumed