HEC HMS merupakan salah satu aplikasi pemodelan yang dapat digunakan untuk memodelkan nilai limpasan harian maupun bulanan berdasarkan karakteristik DAS. Tujuan penelitian ini adalah 1) Mengkaji karakteristik fisik DAS Serang yang direpresentasikan oleh nilai curve number (CN) 2) Mengkaji karakteristik aliran yang berupa debit puncak, volume outflow, dan waktu puncak dari hidrograf banjir terukur dengan hasil pemodelan menggunakan  HEC-HMS. Nilai CN ditentukan menggunakan metode SCS-CN. Analisis hidrograf banjir dilakukan menggunakan HEC-HMS meliputi perhitungan presipitasi menggunakan gage weight, volume runoff menggunakan SCS CN, direct runoff menggunakan SCS-UH, dan baseflow menggunakan constant monthly. Hasil penelitian menunjukkan CN pada tahun 2019 memiliki nilai 83 pada kondisi AMC I. Hasil kalibrasi menunjukkan nilai objective function dengan metode Peak-Weighted RMS Error cukup baik yaitu sebesar 2.2% dengan selisih antara debit puncak simulasi dan observasi yang nilainya masing-masing adalah 21.2 m3/s dan 21.6 m3/s. Secara keseluruhan, hasil uji statistik validasi diketahui bahwa model HEC-HMS menghasilkan hidrograf model yang sangat baik dilihat dari nilai NSE, R2 dan PBIAS.HEC HMS is a modeling application that can be used to model daily and monthly runoff values based on watershed characteristics. The objectives of this study are 1) to examine the physical characteristics of the Serang watershed which is represented by the curve number (CN) 2) to examine the flow characteristics in the form of peak discharge, outflow volume, and peak time of the flood hydrograph measured by modeling results using HEC-HMS. The CN value is determined using the SCS-CN method. Flood hydrograph analysis was performed using HEC-HMS including calculation of precipitation using gage weight, volume runoff using SCS CN, direct runoff using SCS-UH, and baseflow using constant monthly. The results showed that CN in 2019 had a value of 83 under AMC I conditions. The calibration results showed that the objective function value with the Peak-Weighted RMS Error method was quite good, namely 2.2% with the difference between the simulation peak discharge and the observation, each of which was 21.2 m3. /s and 21.6 m3/s. Overall, the results of the statistical validation test show that the HEC-HMS model produces a very good hydrograph model seen from the NSE, R2 and PBIAS values.

The Covid-19 pandemic has an impact on the use of freshwater. Freshwater has an essential role in preventing the spread of Covid-19 related to the implementation of health protocols also Clean and Healthy Living Behavior. The important factors that influence water use are socioeconomic conditions, including income level, type of work, and education level. The spread of Covid-19 significantly occurs in urban areas. Bantul village is the center of government, economy and one of the planned areas of urban settlements in Bantul Regency. Bantul village is also a hinterland of the Yogyakarta agglomeration area. This study was conducted to determine the influence of socio-economic conditions on the significance of changes in water use during the Covid-19 pandemic to implement health protocols in Bantul village. The data was obtained through interviews with 99 respondents based on random sampling techniques. This research was conducted with quantitative methods and descriptive analysis techniques. The result shows an increase in freshwater use during the pandemic, particularly washing hands and taking a shower. The highest increase in freshwater use is in Kurahan Hamlet. While in Grujugan Hamlet, there has been no increase. The increase in freshwater use indicates the suitable implementation of health protocols.

Aceh is a province in Indonesia that makes Islamic sharia as one of the bases in policy determination, one of which is policies related to gender empowerment. It is interesting to be studied about the condition of gender empowerment in Aceh, especially after the ratification of Qanun Aceh No. 6 of 2009 on Women Empowerment and Protection. The study used descriptive qualitative analysis of secondary data obtained from BPS Aceh Province. The results showed that the implementation of Qanun No. 26 of 2009 related to the empowerment and protection of women is still not done to the maximum, either explicitly or implicitly. This is evidenced by the condition of Aceh Gender Empowerment Index which has a volatile trend from 2010 – 2019 with an index ranging from 52.06 to 67.4. The trend is strongly influenced by the three components of GEI, namely women’s involvement in parliament, women’s involvement as professionals, and women’s income donations. The involvement of women in parliament still does not meet the minimum figure of 30%. The involvement of women as professionals has a volatile trend. Meanwhile, women’s income contributions always increase every year.