Canal Blocking (Tabat banjar language) is one of the buildings of water in the channel that aims to keep the water table soils. The hope is to keep the soil remains moist peat can prevent the peatland fire. In this study measured levels of groundwater on the land with canal canal blocking and no blocking. The result peatland Sungai Ahas Wetlands of Central Kalimantan, which channel by blocking the canal has a moisture content of nearly 250% compared with the soil in which that channel does not have a canal blocking only about 60%. This is one proof that the canal blocking can maintain groundwater levels around the channel, which in turn can prevent peat fires. Although it can not restore the ability of peatlands as it was before the burning which the moisture content can reach up to 1500% KEYWORDS: canal blocking, water table, peatland.