<span lang="EN-US">Flooding is a natural phenomenon that often occurs in tropical countries. Drainage design is one of the efforts to prevent floods, however, when the rainfall is high, there are still several inundation points that occur. This requires comprehensive handling to reduce the impact of these inundations, to get an adaptive solution, the use of internet of things based (IoT) tools is one of the alternatives proposed. This study proposes an IoT-based flood inundation monitoring system, which includes a water level reader, a web-based inundation monitoring system, a flood inundation area and depth reporting system as evaluation materials for the government city. The sensor module that we propose is a series of sensors in a hollow cylinder design to reduce water ripples. The server application is displayed in the form of an interactive area mapping which is divided into 4 layers for 4 different analyzes so that central officers can quickly coordinate with field officers to carry out mitigation actions in the affected area. The module requires a low cost and easy installation process compared to a liquid sensor, besides that the display in the form of a web makes it easier for officers to access monitoring applications anywhere compared to geographic information system based (GIS) applications. This research has been carried out and tested in one of the major cities in Indonesia.</span>

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Prospectively, the existence of the construction service industry, both small and large scale, has strategic value for Indonesia, considering that the proportion of its role is quite large and involves the large number of workers involved in the implementation of a construction project. From the above statement, it can be concluded that construction service companies have a positive impact on economic development. But in reality, the implementation of a construction service business has several obstacles and problems. According to the Report on Construction Development "BAPEKIN" in the socialization of Law no. 18/1999 and the Implementation Regulations for construction services, there are several problems that occur in the Business Potential or Conditions of Construction Services in Indonesia. Generally, these problems are the unrealized quality of construction, timeliness of implementation, and efficiency of resource utilization as planned. The unequal position between Service Users and Service Providers in rights and obligations is fair and harmonious. To overcome the above problems, one solution is to develop a technology that can integrate the needs of various construction companies, facilitate the company's business processes so that the company's goals can be maximally achieved. ERP is an enterprise information system designed to coordinate all resources, information, and activities required for a complete business process. ERP systems are based on databases and modular software designs.