MULYANI, A.; KURNIADI, D.; SAPUTRA, R. E. IoT-Based Real-Time River Monitoring and Early Flood Warning Using ESP32 and HC-SR04. Journal of Novel Engineering Science and Technology, [S. l.], v. 5, n. 01, p. 55–62, 2026. DOI: 10.56741/jnest.v5i01.1252. Disponível em: https://journal.iistr.org/index.php/JNEST/article/view/1252. Acesso em: 8 oct. 2026.