Water management is an important aspect of hydrological restoration and fire prevention in tropical peatland because the availability of water is not well distributed in the dry and rainy seasons. The degraded peatlands with massive canalization are very vulnerable against peat fire especially in the dry season. A pilot project for water management was conducted at Tanjung Leban, Bengkalis Regency, Riau Province with the purpose not only for hydrological restoration but also for fire prevention. In 2013, 2014, and 2015, the big peat fires occurred at Tanjung Leban and many peatland areas in Riau which caused a haze disaster. Peatland restoration and peat fire prevention efforts have been continuously undertaken by Peatland Restoration Agency and stakeholders at Tanjung Leban and many peatland areas in Riau. The rewetting, revegetation, and revitalization of livelihood were the integrated approaches that were carried out to support the peatland restoration. The aim of this research is to monitor the hydrological condition as the impact of rewetting activities using canal blocking at Tanjung Leban. Forty dip wells in four transects and an automatic rainfall record equipment were set up in the research area to monitor the groundwater level (GWL) and the rainfall event as the impact of rewetting activities. The result shows that the rewetting activity using canal blocking has a significant impact on the rewetting effort so that the risk of peat fire can be minimized. The historical evidence shows that the peatland restoration has been improving after the peatland areas were kept in always wet conditions.

Peatland fires occur almost every year in Indonesia that might be caused by over-drained peatland due to canalization for a certain purpose. Canalization in the peatland leads to a significant decreasing change of groundwater level that might cause peatland very vulnerable against fire. The rewetting approach by the Peatland Restorations Agency of Indonesia using canal blocking is expected to keep groundwater level high so that the peatland is maintained in an always wet condition. Therefore, it is important to study the impact of canal blocking on the fluctuation of groundwater level in peatland ecosystems. This study was carried out at a research site which is located in Pulau Tebing Tinggi peatland hydrological unit, Kepulauan Meranti Regency, Riau, Indonesia. Groundwater level fluctuation as the impact of canal blocking was monitored using eight dipwells that were set with a distance of 1 m, 51 m, 101 m, and 201 m from the canal for each transect of the three transects. The result of this study showed that the canal blocking has a good impact for keeping groundwater level and keeping peatland on an always wet condition for peatland restoration and peat fire prevention until 400 m distance to the upstream area from canal block and about 1 m distance perpendicular to the canal. The canal blockings will have a good impact on rewetting at the peatland area up to 201 m distance perpendicular to the canal if the rise of water level at the canal is more than 0.6 m for peatland restoration.

In the Academic Potential Test of new students at the Raudhatul Akmal Islamic College (STAIRA) Batang Kuis, do not yet have a Computer Based Test (CBT) or a computer-based exam for the freshman academic potential test exam. So that the exam is still carried out manually and costs a lot of money in its implementation. But it also makes the exam process less carried out because some students can cheat when filling in answers by cheating friends. Therefore, in this study aims to create a web-based Computer Based Test (CBT) application and randomize the questions in it by applying the Linear Congruent Generator (LCG) method. The result of this study is a web-based application for academic potential test exams that are expected to overcome the problems that exist in the current STAIRA Batang Kuis. The order of the questions will be automatically randomized when students conduct an academic potential test exam based on their respective student identification numbers.