Purpose: to analyze the potential of organic waste using a digester test kit (Biogas Reactor). With a biogas reactor fermentation test equipment, 250 liter plastic drum, biogas volume can be known for 15-26 days. The anaerobic process is carried out by observing and analyzing the biogas reactor to produce biogas. gas and electricity and can reduce waste problems that often arise in the community, And one step in realizing the preservation of natural resources and improving human welfare by creating environmental conservation. Methodology/approach: This activity is carried out using the Biodigester method using a drum. Results/findings: from processing organic waste with a certain ratio and Producing gas equivalent to 3 kg of gas, which can be applied in Pandan Dulang village. Conclusion: This activity can motivate villagers to be able to manage organic waste with biodigester technology using drums. Keywords: 1. Technology 2. Potential 3. Biodigister 4. Organic Waste

One of the areas in the city of Palembang, which always experiences flooding every year, is the Buah River watershed. Fruit River with a main river length of 7.93 km, which has many meanders, where reinforcement has been built on the river walls. The research objective was to observe changes in the water level in the Buah River using the HEC-RAS ver.4.1.0 program. The results showed that the flow of the Fruit River which has an Arafuru retention pond with an area where the water overflows is at station 3+000 by 0.90 m both on the right and left of the canal cliff. At stations 2+750 to 2+800 there was a decrease in the water level ranging from 0.70 m to 0.80 m, while at stations 2+700 there was a rise in the water level of the Buah River. This is due to the influence of the flap gate in the Arafuru pond.

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