Drainage Channel Evaluation and Budget Plan for Sumeith Pasinaro – Watui Road Section, West Seram Regency

Abstract

The drainage channel on the sumeith pasinaro - watui road section which certainly affects activities in this area because of frequent landslides that cause inundation and runoff, so that the drainage channel cannot accommodate rainwater discharge. In the evaluation of the drainage channel of the sumeith pasinaro - watui road section, the aim is to find the runoff discharge, to be able to plan the dimensions of the channel and then analyze how much budget is needed in the evaluation of the drainage channel. The research method used is the method of collecting and analyzing data used is primary data and secondary data which is then analyzed using the Log Person III and Gumbel methods based on hydrological and hydrological analysis then evaluating the existing channel with the amount of discharge plan then estimating the cost budget plan with AHSP 2022. Based on the results of the calculation of runoff discharge on the Sumeith Pasinaro - Watui road section is 0.337 m³ / sec and for channel discharge is 0.066 m³ / sec so it is found that the drainage channel cannot accommodate runoff discharge. So that in the re-planning of drainage dimensions with a length of 250 m, a channel top width of 2 m, a channel bottom width of 1.5 m, and a channel height of 1.1 m with a channel discharge of 0.372 m³/det it is found that the new channel dimensions can accommodate runoff discharge. And the value of the Cost Budget Plan based on the new dimensions amounted to IDR. 492.594.000.00