DESIGN OF ABSORPTION WELLS AND SLIDING GATES AS FLOOD CONTROL IN PULO VILLAGE, JOMBANG DISTRICT, JOMBANG REGENCY

ABSTRACT
DESIGN OF ABSORPTION WELLS AND SLIDING GATES
AS FLOOD CONTROL IN PULO VILLAGE, JOMBANG
DISTRICT, JOMBANG REGENCY
The rapid increase in residential areas has resulted in a reduction in rainwater
catchment areas due to the increased area covered by pavement, resulting in a much
shorter water retention time, resulting in rainwater collection exceeding the capacity
of existing drainage systems. During the rainy season and heavy rainfall, Pulo Village
in Jombang Regency often experiences flooding. Therefore, it is necessary to design
absorption wells without disturbing residents' land. Rainfall data used for 10 years
(2014-2023) from the three rain stations closest to the planning location: SH. Jombang,
SH. Keplak, SH. PG Jombang Baru. The calculation results obtained a value of i =
1.98 mm/hour; C = 0.70; A = 6.26 km2, resulting in a planned flood discharge of
0.0241 m3/sec. Precast infiltration wells are planned to be installed at 17 locations,
each with a depth of 3 m. River sluice gates are also planned to control the inflow of
water into residential irrigation.
Keywords: Rainwater Infiltration, Flood Discharge, Irrigation Sluice Gate