This document presents a review of an integrated flood monitoring and warning system. It proposes using sensors to monitor water levels in reservoirs and dams. When water levels reach certain thresholds, an FPGA controller would send SMS alerts to authorities and residents via a GSM module. The system is intended to provide early warnings to help protect lives and property from flood risks. It analyzes previous flood monitoring research using microcontrollers and wireless transmission of alerts. The proposed system would use multiple level sensors connected to an FPGA to monitor water levels precisely and send customized SMS messages at different thresholds to coordinate emergency responses more effectively.