Jurnal Penelitian Pengelolaan Daerah Aliran Sungai
ISSN : 25795511     EISSN : 25796097
Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (JPPDAS) ) is an official publication that publishes scientific papers of research results in the field of watershed management. This Journal was published primarily by Watershe Management Technology Center on April 2017. Journal scopes include are land and vegetation management, soil and water conservation, land rehabilitation, hydrology, social, economic, institutional, remote sensing and Geographic Information Systems (GIS) that support watershed management technologies.
Articles
24
Articles
KERENTANAN SOSIAL EKONOMI DAN BIOFISIK DAERAH ALIRAN SUNGAI SOLO (Socio-economic and biophysical vulnerability of Solo Watershed)

Jariyah, Nur Ainun, Pramono, Irfan Budi

Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Vol 2, No 2 (2018): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai
Publisher : Balai Penelitian dan Pengembangan Teknologi Pengelolaan DAS

Show Abstract | Original Source | Check in Google Scholar |

Abstract

Increasing degradation of a watershed ecosystem is a problem that needs to be resolved. Therefore, a study was conducted in order to determine the socio-economic and biophysical vulnerability of Solo watershed in relation to watershed management. This research was conducted in Solo Watershed. The collected data include primary and secondary data. The potential and vulnerability of socio-economic and biophysical were evaluated using the  Formulation of Watershed level Characterization System. The results of the study showed that (1) the socio-economic of the whole Solo watershed classify as moderate category, with the highest vulnerable district was Wonogiri due to high population density and high land vulnerability, (2) land vulnerability for the whole Solo watershed is in the medium category, with the most vulnerable land category was in Madiun and upstream Solo sub-watersheds, (3) the most prominent flood vulnerability was in the downstream of Solo sub-watershed, (4) the typology of watershed management was classified as highly vulnerable because the territorial typology was in the very high vulnerable and the watershed typology was medium vulnerable. By knowing its vulnerability level, the rehabilitation program can be directed to areas with a high level of vulnerability.

IDENTIFIKASI DAN MITIGASI KERENTANAN KEKERINGAN DAS MOYO (Identification and mitigation of drought vulnerability in Moyo Watershed)

Savitri, Endang, Pramono, Irfan Budi

Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Vol 2, No 2 (2018): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai
Publisher : Balai Penelitian dan Pengembangan Teknologi Pengelolaan DAS

Show Abstract | Original Source | Check in Google Scholar |

Abstract

Drought identification is needed as a baseline for its mitigation. Several drought identification methods are available, but they need to be tested in dry climates. The purpose of this study was to identify dry area and its mitigation in Moyo Watershed, West Nusa Tenggara Province. Paimin and Syarif methods were used in the study. The results showed that the Paimin method produced a uniform vulnerability map, which was "medium vulnerable" for the entire watershed. This is because the applied parameters only have one class for the entire watershed. The Syarif method provides more variable results because the parameters produce several classes of vulnerabilities. However, the later method has a weakness in applying the depth of groundwater.  Moyo watershed only had one class, whereas the depth of the groundwater level varied from 4 to 11 m in the dry season. The two methods produced the same results and there were classified as “medium susceptible” for Moyo watershed. For dry areas, it is necessary to reclassify the drought class of each parameter. By combining the two methods above, it is expected to obtain more accurate results. To get the Water Use Index parameter efficiently, the number of population and water usage should be more efficient. Extentions to the community about the effectively water usage is important. Adaptation to drought can also be done by making reservoirs and setting cropping patterns.

KELEMBAGAAN MITIGASI KEKERINGAN DI KABUPATEN GROBOGAN (Institution of drought mitigation in Grobogan Regency)

Falah, Faiqotul, Purwanto, Purwanto

Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Vol 2, No 2 (2018): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai
Publisher : Balai Penelitian dan Pengembangan Teknologi Pengelolaan DAS

Show Abstract | Original Source | Check in Google Scholar |

Abstract

Drought that occurs almost every year in Grobogan Regency should be anticipated and mitigated by all stakeholders. This paper aims to review the institutional aspects on drought mitigation in Grobogan, as a source to develop a policy on drought mitigation. The data were collected through literature review, structured interviews, and focus group discussion. The data analysis was conducted qualitatively using analysis matrixes of policies’ content, stakeholders’ roles, and institutional capabilities. This study showed that : 1) The government of Grobogan Regency had issued six regulations related to general disaster mitigation and strategy of drinking water supply, but no spesific regulation on drought mitigation issued yet; 2) there is no database on the losses caused by drought and no information about potential water source locations in Grobogan Regency; 3) there are no master plans to anticipate and mitigate drought disasters; and 4) a Disaster Response Forum and Drinking Water & Environmental Health Working Group have been established, but not specifically dealing with drought. The required steps to mitigate drought in Grobogan are: 1) Establishment of Drought Mitigation Forum; 2) Preparation of drought information database including identification of new water sources and water conservation technology; 3) Preparation of Drought Mitigation Master plan; and 4) Drafting and establishing local regulations on water utilization, protection and utilization of springs, and drought mitigation system.

IDENTIFIKASI BAMBU DI SUB DAERAH ALIRAN SUNGAI KEDOME LOMBOK TIMUR DAN ALTERNATIF MANFAAT UNTUK KONSERVASI SEMPADAN SUNGAI (The identification of bamboo at Kedome Sub Watershed East Lombok and its alternatives conservation for the river buffer zones)

Mentari, Mega, Mulyaningsih, Tri, Aryanti, Evy

Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Vol 2, No 2 (2018): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai
Publisher : Balai Penelitian dan Pengembangan Teknologi Pengelolaan DAS

Show Abstract | Original Source | Check in Google Scholar |

Abstract

Most bamboo has a tight sympodial rhizome root system that can be used for conservation of river border. Generally, bamboo in each watershed has a variation, such as in Tiupupus watershed North Lombok District, there were found 4 bamboo genera, 9 species, and 1 variety while in Meniting watershed, West Lombok District, there were found 6 genera of 8 species of bamboo. This study aims to determine species of bamboo and its distribution along buffer zones of the Kedome river in East Lombok District. Sampling method was conducted by exploring the bamboo in the buffer zone as long as 6.000 m, the width of the two paths on both sides of the river was 50 m each. Data were analyzed using description method. The results showed: there were 3 bamboo genera, 5 species and 1 variety e.g. Gigantochloa apus, Gigantochloa atter, Thyrsostachis siamensis, Bambusa maculata, Bambusa vulgaris, and Bambusa vulgaris var. vittata. Species of Gigantochloa atter and Bambusa vulgaris have tight sympodial rhizome roots, rounded and thick canopy. Both types of bamboo are recommended to be used as soil and water conservation plants in the watershed.

PENGARUH PERSENTASE PENUTUPAN HUTAN TERHADAP DEBIT PUNCAK DI SUB DAERAH ALIRAN SUNGAI HUTAN ALAM KABUPATEN TANAH LAUT (The effect of forest coverage percentage on peak discharge in the natural forest sub watershed, Tanah Laut Regency)

Nugrahanto, Esa Bagus, Adi, Rahardyan Nugroho, Supangat, Agung Budi, Nugroho, Nunung Puji

Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Vol 2, No 2 (2018): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai
Publisher : Balai Penelitian dan Pengembangan Teknologi Pengelolaan DAS

Show Abstract | Original Source | Check in Google Scholar |

Abstract

The percentage of forest coverage holds an important role in regulating water in watersheds. This paper studies the influence of forest coverage percentage on peak discharge in sub watersheds with various percentage of natural forest areas. The study took place in Bakar, Tanjung, Iwakan, and Langsat Sub Watersheds, Tanah Laut Regency, South Kalimantan Province in 2017. The percentage of natural forest varied from 9,7 to 98% of the the sub watershed areas. This research was conducted by direct measurement of rainfall and stream water levels that were converted into peak discharge. The peak discharges between sub watersheds were compared to the rainfall and the percentage of forest. The results showed that in general the percentage of natural forest coverage affect the peak discharge. The forest coverage showed a positive response in lowering the peak discharge when the rainfall was below 115 mm/day. Bakar and Tanjung Sub Watersheds that had low percentage of natural forest coverage had higher peak discharge than Langsat and Iwakan Sub Watersheds, which had higher percentage of forest coverage. The relationship between the percentages of natural forest coverage with peak discharge marked by the coefficient of   determination value of 53.3%. Since the existence of forest is very important as the hydrological controller, forest conservation efforts and reforestation should be conducted in the upper sub watersheds.

MITIGASI BANJIR STRUKTURAL DAN NON-STRUKTURAL UNTUK DAERAH ALIRAN SUNGAI RONTU DI KOTA BIMA (Structural and non-structural flood mitigation for Rontu Watershed in Bima City)

Yuniartanti, Rizki Kirana

Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Vol 2, No 2 (2018): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai
Publisher : Balai Penelitian dan Pengembangan Teknologi Pengelolaan DAS

Show Abstract | Original Source | Check in Google Scholar |

Abstract

Flood is one of natural disasters that often occur in Indonesia. This disaster also occurred in Bima City on December 21, 2016, December 23, 2016, and January 2, 2017 with the affected area were Mpunda, Rasanae Timur, Asakota, Rasanae Barat, and Raba districts. The urban areas become the most affected areas, mainly in the residential areas that located more than 50 meters from the flood plains. The variations of flood heights ranged from 1-4 meters. In addition to the hydrometeorological factors, the flood in Bima was caused by several factors, such as: loss of riparian areas function which  turned into settlements nowadays, siltation in the downstream areas, poor management of urban drainage systems, reduced vegetation cover in upstream, and narrowing of river bodies. With the increasing of hydro-meteorological disaster problems and challenges, recommendations of structural and non-structural infrastructure to reduce the risk of flood disaster are needed. Therefore, this research aims to provide recommendations of structural and non-structural as an effort to mitigate flood disaster in Bima City. Analytical methods used in this research were participatory mapping, flood hazards mapping and modeling, and qualitative description. Results showed that the management of Rontu watershed in controlling flood would be effective and efficient by combining the structural and non-structural development. Mapping and modeling the flood-affected areas can become a source in the riparian planning regulation to reduce the risk of flooding.

DINAMIKA PENCAPAIAN KONSENSUS DALAM FORUM KOORDINASI PENGELOLAAN DAERAH ALIRAN SUNGAI: SUATU PEMODELAN BERBASIS AGEN (The dynamic of reaching consensus in the coordination forum of watershed management: an agent-based modeling)

Irawan, Evi

Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Vol 2, No 1 (2018): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai
Publisher : Balai Penelitian dan Pengembangan Teknologi Pengelolaan DAS

Show Abstract | Original Source | Check in Google Scholar | Full PDF (1195.884 KB)

Abstract

Paradigm change of watershed management towards participative management brings consequences in the involvement of stakeholders in the decision-making process. While on one hand it can increase the social legitimacy of various watershed management policies and activities, the involvement of many stakeholders on the other hand may delay the achievement of consensus and reconciliation of interests. This study aims to examine the influence of social networks built among members of the Central Java Watershed Management Coordination Forum (Forum DAS) on the achievement of consensus with regards to a watershed planning. The research method used agent-based modeling simulation combined with in-depth interview data of forum members. The simulation model was developed using Netlogo 6.02 software. The simulation results show that the structure of the established communications network at this time has not been able to facilitate in the achievement of consensus, but tends to create formation of opinion polarization.

POLA DAN EVALUASI PENGGUNAAN LAHAN DI SEMPADAN SUNGAI CINANGKA, SUB DAERAH ALIRAN SUNGAI CIMANUK HULU (Pattern and evaluation of land use in Cinangka Buffer Zone, Upper Cimanuk Sub Watershed)

Widiyanto, Ary, Hani, Aditya

Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Vol 2, No 1 (2018): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai
Publisher : Balai Penelitian dan Pengembangan Teknologi Pengelolaan DAS

Show Abstract | Original Source | Check in Google Scholar | Full PDF (1151.994 KB)

Abstract

In general, watershed problems are caused by two factors namely natural factors such as rainfall, slopes and soil types and human factors such as policy and socio-economic factors. This study aims to evaluate the existing land use compared to Regional Spatial Planning of Garut in the buffer zone of Cinangka River, which is part of the Upper Cimanuk sub watershed. This research is expected to contribute to the watershed management knowledge and offer an alternative model for watershed management based on dynamic socio-economic conditions.Primary data collection was conducted through field surveys and interviews to the selected farmers whose land were in the selected areas. The interviews were to find out the reasons for planting the chosen crops. An observation plot of 50 meters for each river boundary as long as 1 km, were made to evaluate the land use. Therefore, total area of observation was 100.000 m2 or 10 hectare (ha). The study area is dominated by monoculture farming, which is 62% of the total area. Other land uses include bare land and shrubs (13.2%), agroforestry (12.3%), forest trees (trees & MPTS) (11.6%), and other types of land use (1%). The use of monoculture agriculture in this area is not accordance to the Regional Spatial Plans (RTRW) of Garut Regency in 2011-2031, which allocates the area of Cinangka sub watershed as community forest cultivation.

EVALUASI LAHAN UNTUK MENILAI KINERJA SUB DAERAH ALIRAN SUNGAI RAWAKAWUK (Land evaluation to assess performance of Rawakawuk Sub Watershed)

Wahyuningrum, Nining, Putra, Pamungkas Buana

Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Vol 2, No 1 (2018): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai
Publisher : Balai Penelitian dan Pengembangan Teknologi Pengelolaan DAS

Show Abstract | Original Source | Check in Google Scholar | Full PDF (1073.711 KB)

Abstract

Land is an important resource in a watershed because of its position as a processor. The condition of a watershed depends on the land management and its compliance with its performance. The purpose of the research is to evaluate the performance of Rawakawuk Sub Watershed from the land aspects. Guidelines of Watershed Evaluation and Monitoring, i.e. the Regulation of Director General of Land Rehabilitation and Social Forestry or PerDirjen 04/V-Set/2009 was used to analyze parameters of Vegetation Cover Index (VCI), Land Use Suitability Index (LUSI), and Erosion Index (EI). The results showed that the study area  has 53% of pine and teak monoculture, and 20,7 % of agroforestry private forest, therefore the VCI is 73,2%. The LUSI is 93,7% which implies that 93,7% of the area is suitable to its land capability. In addition, 36,1% of the area is exposed to very severe erosion. Since the solum depth is relatively deep (>90 cm), the tolerable soil erosion is high and EI tends to be small. Around 60,3% of the area has an average EI of 71,1 which is classified as moderate. Based on the cumulative value of VCI, LUSI and EI, Rawakawuk Sub Watershed can be classified as slightly good. However, conservation practices should be applied to the very severe erosion areas.

FACTOR INFLUENCING DENSITY LEVEL OF GULLY EROSION IN KALIWUNGU WATERSHED

Nugraha, Surya Sabda, Sartohadi, Junun

Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Vol 2, No 1 (2018): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai
Publisher : Balai Penelitian dan Pengembangan Teknologi Pengelolaan DAS

Show Abstract | Original Source | Check in Google Scholar | Full PDF (1088.031 KB)

Abstract

Gully erosion is the most siginificant forms of land degradation. Gully distribution can indicate land degradation. Density level of gully shows the level of land degradation on a catchment. This research aims to identify the distribution of gully and to calculate density level of gully erosion in Kaliwungu Watershed. Distribution of gully and density level of gully was analyze based on land use map and landform map. In addition, analyze the characteristics of slopes, vegetation, infiltration, and land cultivation to determine the factors affecting gully erosion.The researchers was applying field survey to collect gully erosion data. Gully distribution was overlayed on land use map and landform map. Land use was delineated by interpretated aerial photograph of Kaliwungu Watershed. Aerial imagery with the support from the result of Sentinel image processing was used to observe vegetation density. Landform and slope were deliniated from Terra-SAR X DEM. Gully catchment was delineated by interpretated Terra-SAR X DEM and aerial photograph of Kaliwungu Watershed.  Analysis to determine the factors that influenced gully was done descriptively. The analysis was conducted based on the result of overlay of gully distribution on land use map and landform map. The result of this research were map of gully distribution and map of density level of gully erosion in Kaliwungu Watershed with a scale of 1: 10.000. Gully erosion formed on erosin zone to deposition zone, but there were 3 gully that formed on residual zone. There were three density classes of gully in Kaliwungu Watershed which are high, medium, and low. The process of intensive gully takes place only at the some point with intensive land cultivation or land that has been highly disturbed by human activities such as settlements. The study result shows that land use and land cultivation was the factor that influenced the formation of gully erosion.