Rapid developments of technology in education, business, office administration, government and information dissemination play an important and large role in human life as a whole. The internet as a supporting tool can be a source of information in finding information related to various activities. Banjarsari village has quite large natural potential such as plantations, agriculture and tourism, but not much is known by people outside the village. The Village Website is expected to be a means of disseminating information, supporting superior village programs and publishing matters related to the potential that exists in Banjarsari village. Until now, the knowledge of the community or sub-district staff in Banjarsari village regarding the use of the website is still very lacking, so that the dissemination of village information through the website has never been implemented. In this PKM activity, the PKM team from the Indonesian Technocrat University helped develop a village website in Banjarsari village. Apart from that, the UTI PKM team also held training for all staff in Banjarsari village in order to be able to manage the website that had been created. With the creation and training of using the website in Banjarsari village, it is hoped that village programs and information about the village can be accessed and socialized properly.

Banjir adalah masalah umum yang sering terjadi di wilayah Indonesia, terutama diwilayah padat penduduk, contohnya di daerah perkotaan. Kerugian yang ditimbulkan aibat banjir cukup besar, baik dari segi materi maupun kerugian jiwa/kematian, maka dari itu permasalahan banjir perlu mendapatkan perhatian yang serius. Salah satu masalah banjir yang masih menjadi pusat perhatian saat ini adalah masalah banjir di Sungai Cimadur, Provinsi Banten Hasil analisis debit kala ulang 5 tahun, 10 tahun, 25 tahun dan 50 tahun dihitung menggunakan Metode Polygon Thiessen dengan hasil debit pada kala ulang 5 tahun sebesar 101,6100 m3/s, kala ulang 10 tahun sebesar 127,2145 m3/s, kala ulang 25 tahun sebesar 199,4511 m3/s dan kala ulang 50 tahun sebesar 165,7435 m3/s. Debit banjir yang telah didapatkan digunakan untuk melakukan running Program Hec-Ras dengan hasil analisis mengenai tinggi muka air banjir pada bagian hilir Sungai Cimadur pada titik 1 sampai dengan titik 8 mengalami banjir pada seluruh titik yang dianalisis. Banjir di titik-titik analisis memiliki perbedaan tinggi muka air banjir yang berbeda, letak banjir yang berbeda yaitu ada pada bagian kanan dan ada pada bagian kiri sungai serta ada juga pada yang terjadi pada keduanya. Kata Kunci: Banjir, Debit, Polygon Thiessen, Tinggi Muka Air Banjir.

Internal erosion is susceptible to occur in conditions where there are cracks or pre-formed cavities at the interface between the dam foundation and embankment. The initiation of internal erosion is related to the critical gradient (Ic ) and hydraulic gradient (Ixy ) at a certain position. The addition of repair materials in foundation improvement will change the total head, especially on the dam foundation, so the value of the hydraulic gradient will also change simultaneously from upstream to downstream. This study examines the value of the hydraulic gradient (Ixy ) at certain points on the dam foundation under the condition of foundation with and without improvement. Several scenarios were simulated using Geostudio Seep/W software to get an estimated value of the hydraulic gradient. The upstream blanket foundation improvement method increases the hydraulic gradient in the upstream zone when compared to the curtain grouting method, thereby increasing the potential for internal erosion in a related area. Increasing the depth of curtain grouting from 25 m to 35 m does not significantly reduce the value of the hydraulic gradient in the dam foundation. Research results can be used for analysis to improve design and construction, and as a reference for similar dams.