Travel Ecological Crisis at Waduk Manggar: Invasive Weeds Threaten Tourism, Environment, and Water Security in Balikpapan September 16, 2026 Dwi Wanna Balikpapan — The picturesque expanse of Waduk Manggar (Manggar Reservoir), spanning an impressive 500 hectares in Balikpapan, East Kalimantan, is currently facing a severe ecological and economic crisis. Captured vividly…
