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The application of large-scale social restrictions (LSSR) during the Covid 19 pandemic in Indonesia significantly impacted the tourism sector. A Sustainable Rural Tourism model is expected to develop tourist village development during the Covid 19 pandemic through the WEB GIS (Website Geographical Information Systems) approach. It creates smart tourism through tourist information systems integrated with tourist websites. Ngerangan Tourist Village in Klaten Regency is a village where most of the population's economy is dependent on MSME (Micro, Small, and Medium enterprises) and farming activities. The research aims to formulate a tourism promotion model in Ngerangan tourism village through WEB GIS. The method used is quantitative. First, identifying the data needs such as spatial data (tourist attractions, tourist safety routes types, and infrastructure for implementing health protocols) and non-spatial data (information on MSME and virtual tours). Second, designing the tourism promotion system through WEB GIS and third, testing to see the output of the WEB GIS produced. The research output is Web GIS using story maps application contains two spatial information about the Ngerangan tourist village. First, spatial information about tourist attractions includes locations, photos, and descriptions of tourist attractions. Second, spatial information regarding health protocols facilities during the Covid-19 pandemic includes locations, photos, and descriptions of health protocol facilities

The COVID-19 pandemic has plagued the entire world, including Indonesia. The step to breaking the spread chain of COVID-19 is to apply health protocols such as handwashing and social distancing. The Covid-19 case in Klaten Regency Central Java for ten weeks until early February 2021 with the status of the Red Zone and death rate is 14.1 percent. Ngerangan Tourism Village has a thematic kampong with culinary and nature attractions, such as Pecel Kampong. The number of visitors reaches 600 tourists per day. This causes tourist sites to be clusters most prone to the spread of COVID-19 and must be equipped with adequate health protocols. Therefore, this service aims to implement health protocols during the Covid 19 pandemic through hand washing and social distancing. The service method has three stages, namely information, guidance, and habitual independence. The output of this service is in the form of technology that is socialized and donated in handwashing behavior in the form of 3 portable footstep sinks, four jerry cans of handwashing soap, one hand washing educational banner, and one banner for implementing health protocols. Meanwhile, the technology that was socialized and granted in the implementation of Social Distancing was in the form of 1 banner for implementing social distancing and 20 stickers indicating the implementation of social distancing.

Reservoir sedimentation can be overcome by reducing the amount of sediment that enters the reservoir, by building check dam. The check dam has more deposited coarse sediment load than fine sediment load. Fine sediment that escapes the check dam will flow further and eventually enter the reservoir pond. Therefore it is necessary to build a building that can capture fine sediments. Construction is planned as a system of sediment trap in irrigation channels. The purpose of this study is to analyze the possibility of applying the sediment trap in the river to deposit sediments that escape the check dam. The analysis begins with the selection of the location of the sediment trap, then calculate the dimensions of the sediment trap and the amount of sediment that has settled. Based on the analysis of the selected dimensions with several combinations of gradation of sediment grains, sediment deposition that occurs ranges from 42 - 68%. So it can be concluded making the sediment trap in the river can be done. However, for the application of these sediment traps further research is needed regarding the dimensions of sediment traps that are most optimal for sediment deposition.

Sumber mata air merupakan kebutuhan manusia untuk kehidupan sehari-hari. Salah satu manfaatnya untuk mengairi lahan pertanian. Lahan pertanian di Kabupaten Semarang dalam beberapa tahun mengalami kekeringan karena musim kemarau. Terdapat 8 calon embung di Kabupaten Semarang telah teridentifikasi untuk prioritas jangka pendek. Pemilihan lokasi embung menjadi masalah tersendiri pada pengolahan data yang memiliki banyak kriteria yang harus diperhatikan di bidang Sumber Daya Air. Data yang diperoleh dapat disimpan dalam bentuk basis data dalam SIG. Oleh karena itu, sistem pendukung keputusan diperlukan untuk menentukan prioritas embung terbaik. Metode yang digunakan pada penelitian ini ialah TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution). Data yang sudah diolah akan diimplementasikan untuk menentukan prioritas embung terbaik di suatu daerah dan ditampilkan dalam bentuk visual Carto Map. Sistem dibuat menggunakan kerangka kerja Codeigniter berbasis PHP dan basis data MySQL. Pada pelaksanaannya digunakan metode Rapid Application Development (RAD). Hasil perhitungan diperoleh tiga urutan pertama yang memiliki volume tampungan efektif terbesar dan harga air terendah yang dapat diprioritaskan adalah Mluweh, Lebak, dan Pakis.

Fenomena degradasi lingkungan menyebabkan meningkatnya frekuensi banjir di beberapa wilayah, salah satunya adalah kawasan pesisir pantai Kota Semarang. Kecamatan Genuk, Kecamatan Tugu, Kecamatan Semarang Utara, dan Kecamatan Semarang Barat merupakan empat wilayah yang berbatasan langsung dengan Laut Jawa. Kondisi topografi dan karakteristik wilayah empat kecamatan tersebut menyebabkan empat kecamatan tersebut rawan mengalami bencana banjir. Untuk mengatasi fenomena tersebut perlu adanya penyesuaian perencanaan pembangunan berkelanjutan. Agar perencanaan tersebut efektif maka diperlukan analisa untuk menentukan faktor utama penyebab permasalahan banjir di wilayah tersebut. Oleh karena itu, dalam penelitian ini dilakukan analisa tingkat risiko banjir menggunakan metode AHP TOPSIS untuk menentukan faktor utama penyebab banjir di masing-masing kecamatan. Kriteria yang digunakan dalam analisa terdiri dari curah hujan, tata guna lahan, kemiringan lahan, dan ketinggian. Berdasarkan hasil analisa, didapatkan bahwa Kecamatan Semarang Utara dan Semarang Barat memiliki tingkat risiko paling tinggi terhadap bencana banjir. Faktor dominan penyebab tingginya risiko banjir di dua kecamatan tersebut dibanding dua kecamatan lainnya adalah curah hujan. Sedangkan faktor utama penyebab banjir di kawasan pesisir pantai Kota Semarang adalah ketinggian

The rural area is one area with a vital function as a food producer towards food security which urgently needs sustainable stormwater management. However, the challenge of sustainable stormwater management is climate change. WSUD is one of the most influential sustainable stormwater because WSUD can control the hydrological cycle and water quality through local facilities. Vegetated WSUD is a practical application of WSUD in regulating stormwater management because it is easy to apply. Vegetated-WSUD consists of a bioretention basin, rain garden, and swales track. Klaten Regency is an area in the province of Central Java that is ranked 9th in the highest drought level in Indonesia, and eleven sub-districts are prone to flooding. On the other hand, Klaten Regency is the largest producer of rice suppliers in Central Java which requires sustainable stormwater management. The research aims to formulate a design simulation model through bioretention, rain garden, and swales track through WSUD to achieve sustainable rural stormwater management. The research method used is quantitative with map overlay and design mapping. The research outputs determine the location feasibility and design model application of vegetated-WSUD in the Klaten Regency. The two-dimensional and three-dimensional design model consists of space requirements, placement, and vegetation types from each bioretention basin, rain garden, and swales track.

Critical land has become a problem in the world. Critical land is very detrimental to the health of the land. Several factors cause the land to become critical. One of them is the use of land that is not by the capabilities of the land. If no repairs made, the land will be physically, chemically, and biologically damaged. Klaten Regency is one of the regencies in Central Java Province, which has quite extensive critical land. It is necessary to monitor and improve land quality regularly to avoid critical land problems. Data and information on critical land obtained from Klaten Regency processed into a decision support system. Decision Support System uses a combination of Analytical Hierarchy Process (AHP) and Technique For Order Preference by Similarity to Ideal Solution (TOPSIS) methods. In this research, a Web-based Decision Support System created to determine the critical land area in Klaten Regency. The information system created has an alternative menu and criteria that determine the potential of critical land in Klaten Regency, making it easier for users to obtain information.

The increasing sedimentation of Mrica reservoir shows that the sedimentation control has not been effective. The sedimentation control has been made include the disposal of sediments that settle in the reservoir by dredging or flushing. However, the results are not optimal. This is caused by the large volume of sediment entering the reservoir each year. The controlling volume of sediment that goes into the reservoir has also been carried out by conducting a watershed conservation program and building a check dam in the upstream Mrica reservoir. However, the existing check dam is still less effective in controlling sediments, especially suspended load sediments, that are transported in the river. Therefore this study was carried out by adopting the sediment trap concept to deposit sediments that escaped from the check dam. This study simulated changes in the width of the downstream channel of the check dam by three variations using HEC-RAS. There was a width of 20%, 40%, and 60% wider than the initial width. The results showed the effect of changing the channel width on volume sediment deposited. Based on the results of the study, the change in width to wider than the initial width could increase the volume of sediment deposits.

Reservoir sedimentation is a major problem experienced by reservoirs in Indonesia. Reservoir sedimentation can be overcome by reducing the amount of sediment that enters the reservoir, among others, by building a Check dam. Check dam deposits more sediment loads with coarse grains, while sediment loads with fine grains will escape and enter the reservoir. So it is necessary to have construction to hold and settle fine sediment loads downstream of the Check dam. Construction is planned like a sediment trap in an irrigation system with variations in the cross-sectional area. In this study, the cross-section was expanded by changing its depth. The purpose of this research is to determine the effect of changes in the channel depth with discharge and grain size distribution variation on sediment deposition that occurs. The calculation is done using the HEC-RAS software. Simulation results show the deeper the sediment trap, the smaller the amount of sediment deposit. The large discharge, the smaller of deposit percentage. The greater of fine sediment percentage, the less the deposit.

Energy dissipator serves to stabilize the flow of water for preventing any scouring. Scouring can endanger the geometry of downstream river situated at the riverbed and river bank. The change in stream conditions from supercritical to subcritical leads to a hydraulic jump that is used by energy dissipator to reduce the flow energy. Type of energy dissipator which is frequently used is stilling basin equipped with baffled blocks. Baffled blocks serve to generate hydraulic jump and reduce the flow velocity. However, the effectiveness of stilling basin in stabilizing the flow water is lacking. This is proved by the occurrences of scouring on downstream riverbed and riverbank of the weir even though it has been supported by stilling basin. Based on the problem, the research about the installation of baffled block pattern has been done. Model 0 was a model made based USBR type III stilling basin while model 1 was variation model where the baffled block installation was adjusted so that it is located between chute block. The dimension of the baffled block model 1 has modified to adjust the location. The study was conducted by analyzing the hydraulic flow parameters (flow velocity, Froude number and energy specific) on upstream and downstream of energy dissipator. Based on the analysis, it can be concluded that average downstream flow velocity for model 0 was 34.14 cm/sec while for model 1 was 29.18 cm/sec. Thus, model 1 could reduce the flow velocity 1.85% more effectively than model 0. The average downstream Froude number for model 0 was 0.30 while for model 1 was up to 0.26. Thus, model 1 could reduce the Froude Number 0.52% more effectively than model 0. The average energy loss for model 0 was 50.69% whereas model 1 was 51.20%. There is an increase in energy loss by 0.52% from model 0. Thus, model 1 has more effective baffled block pattern installation in stabilizing the water flow than USBR type III model.