Mapping of Soil Infiltration Rate in Krueng Meueh Watershed Aceh Province

Infiltration is a very important component in soil conservation. Infiltration is a very important part of the hydrological cycle. The smaller the rate of soil infiltration then the run off rate will be greater and vice versa, because the run off rate is a difference in the rain intensity and the rate of infiltration. The physical state of the soil is one indicator that determines the speed of the soil in rainwater infiltration. The aim of this research was to know the soil infiltration rate in Krueng Meueh Watershed Aceh Province using infiltrometer method and Horton equation model. The infiltration calculation is done in every unit of land. Double ring infiltrometer that pressed into the soil, and filled with water was used. The decreased of water was observed with interval of five minutes. The results showed that the highest infiltration rate was 7,572 cm/hour (rather fast) found in SL 10 with 3 – 8% slope (rather sloping), Latosol soil type, shrubhs land cover and the smallest was 1,971 cm/hour (rather slowly) found in SL 12 with 8 – 15% slope, Red-Yellow Podsolic soil type and shrubhs land cover.