Every year over 500 idols of Lord Ganesh in and around Jajpur district are immersed in the rivers and streams after the Puja is over.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/organisers-artisans-eco-friendly-ganesh-idol-time
[2] http://admin.indiaenvironmentportal.org.in/category/author/akshay-rout
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/pioneer-bhubaneswar
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/orissa
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/jajapur
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ganesh-chaturthi
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/religious-beliefs
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environmentalists
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/secondary-pollutants
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment