GROUNDWATER RECHARGE POTENTIAL IN CLAY AREA JEPON VILLAGE, BLORA
<p align="justify">Drought in Blora district especially in Jepon village becomes a problem every year during the dry season. Field observations conducted during the period of February 2017 were groundwater measurements (MAT), physical and chemical measurements of 21 points in residen...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/26661 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | <p align="justify">Drought in Blora district especially in Jepon village becomes a problem every year during the dry season. Field observations conducted during the period of February 2017 were groundwater measurements (MAT), physical and chemical measurements of 21 points in resident wells and 5 rivers, laboratory tests of 11 points, shallow drilling by 8 points, along with water balance measurement provides an illustration of hydrogeological conditions and groundwater recharge potential of the research area. The study area is composed of four formations, namely Lidah Formation, Mundu Formation, Ledok Formation, and Wonocolo Formation. The aquifers in the study area are layers of sedimentary rock weathering that are included in the Lidah Formation and Mundu Formation. The direction of groundwater flow map shows that the direction of flow in Jepon village is generally from the east to the southwest with the main control is the morphological and topographical conditions. The aquifer of the study area is an unconfined aquifer with a depth of groundwater between 1-8.2 m reinforced by the value of bicarbonate and levels of coliform bacteria contamination. Groundwater in the research area comes from meteoric water, so it is still classified in fresh water water. The aquifer conditions that result from laps of carbonate and / or carbonate sedimentary rocks cause the content of TDS and bicarbonate in groundwater to be relatively high. Rainfall that occurred in Blora, Cepu has an average size of 136.5 mm / month or 1600 mm / year. With evapotranspiration of 977 mm / year, runoff 800 mm / year and infiltration of 320 mm / year. The amount of water storage is 800 mm / yr with water surplus condition in October to June period. Rain Harvesting can help meet the water needs for public bathing, washing, and toilet facilities per month by ± 30.47%.<p align="justify"> |
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