Answer: Rajasthan
Notes: The Rajasthan High Court recently sought a detailed conservation plan from the state government due to rising ecological threats to Gadisar Lake in Jaisalmer, Rajasthan. Gadisar Lake is a 14th-century artificial reservoir originally built by Raja Rawal Jaisal and later renovated by Maharawal Gadsi Singh, giving it its present name. It historically served as Jaisalmer’s main water source through an efficient rainwater harvesting system in the desert. Encroachment, urban pressure, siltation and pollution have reduced its catchment area and damaged ecological balance. The lake supports local biodiversity and migratory birds, making it a vital urban-wetland ecosystem.
