Analysis of Hydraulic Flood Control Structure at Putat Boro River
Abstract: Putat Boro River is
one of the main drainage systems of Surakarta city which drains into Bengawan
Solo river. The primary problem when flood occur is the higher water level of
Bengawan Solo than Boro River and then backwater occur and inundates Putat Boro
River.
The objective of the study is to obtain operational method of Putat Boro
River floodgate to control both inflows and outflows not only during flood but
also normal condition. It also aims to know the Putat Boro rivers floodgate
operational function to reduce inundation. Putat Boro river water level
variation and Bengawan Solo river water level variation were used for
simulation of Boro river floodgate routing. The simulation used 10-year
inflows, 50-year inflows, and 100-year inflows return period and Boro water level
variation are +82.50 m, +83.00 m and +84.00 m.
The results of the study show that the effective opening of floodgate are
0.35 m - 0.55 m for +82.05 m of Bengawan Solo water level, 0.50 m – 0.65 m for
+82.55 m of Bengawan Solo water level and 0.70 m – 0.85 m for +83.48 m of
Bengawan Solo water level, for reducing water level of Boro river flooding.
Author: Ruhban Ruzziyatno
Journal Code: jptsipilgg130027
