| dc.description.abstract | There are some characteristics and distributions of unconfined groundwater variation in the research area.
Those are related to a system of water supply and consumptive use for drinking water. Variation of the groundwater
characteristic depends on variation of morphology. Therefore, it is needed to delineate hydromorphology units of the
regions as a base on groundwater resources management, especially for drinking water.
The aims of the research are: (1) to study of the characteristic and distribution of unconfined groundwater
variations base on landform units, (2) to study the factors that affect such variations, and (3) to establish the
hydromorphology units of the regions for groundwater resources management, especially for drinking water. The method
used in this research is landform approach and field survey. The sampling method is stratified sampling, based on
landform as the analysis approach.
Result of the research shows that there are some variations of groundwater characteristic at each landform. Landforms
which have good groundwater characteristic are Hydromorphology Unit of Fluvio Volcanic Plain of Young Merapi
(except Bayat region) and Hydromorphology Unit of Volcanic Foot Plain of Young Merapi. At those units, there are
good quality of groundwater, bicarbonate water (hydrochemical type I), having low electric conductivity, shallow of water
table, low in fluctuation, and middle to fast class in aquifer permeability. Those units are the most potential unconfined
groundwater resources management for drinking water. The units which have poor groundwater characteristic are
Hidromorphology Unit in Bayat Region, including Undulating Alluvial Plain, Fluvio Volcanic Plain of Young Merapi,
and Swamp Alluvial Plain. Generally, the groundwater quality is medium to poor, the hydrochemical type is Va (initiation
process of connate water) and type III (evaporate water), shallow up to medium of water table, and low to middle class of
aquifer permeability. The taste of groundwater is brackish to saline with high concentration of chloride. | en_US |
