STUDI PENGENDALI LIMPASAN AIR HUJAN MENGGUNAKAN SUMUR RESAPAN PADA PERUMAHAN GRIANAN AGUNG SINGOSARI KABUPATEN MALANG

Abstract

In planning the drainage system and rainwater infiltration in housing must pay attention
to the direction of flow, as well as some environmentally friendly drainage concepts. One that is
used in ecodrainase is infiltration wells to control runoff discharge at the study site. Infiltration
wells in canals are one of the alternatives for controlling rainwater runoff in an area that
regulates away from rivers.
This study aims to determine the discharge of rainwater runoff in each building and in
the channel, as well as the number of absorption wells needed in each channel. The calculation
used for flood discharge is the Rational method, whereas for recharge wells it uses the Sunjoto
method. From this research, runoff flowing to 42/60 type houses was obtained at 0.0208627 m3 / s
and the dimensions of the infiltration well diameter (D) 1.4m and depth (H) 1.2m. Then the runoff
discharge that flows in channel 1 with a cistern area of 513 m2 plus household discharge
becomes 0.1392511 m3 / sec. The total depth (H) requirement in channel 1 is 9.4 m divided by the 

depth (H) for each 2m well is 4.68m rounded to 5 units. So the infiltration well needed in channel
1 with a diameter (D) 1m and depth (H) 2m is 5 units.
Keywords: Infiltration well, Rainwater Runoff, infiltration