Under the guidance of site in charge Shri. GVS Anand sir , We did Ganesh pooja and idol immersion.

The clay idol is worshiped with turmeric and some other natural herbs during ganapati navarathri. The herbal characters of these materials help the water animals like fish, tortoise to grow well. It is said that the Ganesha idols after the pujas go back to their Heavenly abode and for this reason they are immersed.

Why Ganesh Nimajjanam is done? The ritual is done to signify the birth cycle of Lord Ganesha; just as he was created from clay/Earth, his symbolic statue is as well. The idol is immersed in water so that Ganesha may return to his home after his 'stay' at the devotees' home or temple where the Ganesha Chaturthi rituals are conducted.

What is Ganesh immersion? The last day of the Ganesh Chaturthi festival is also known as the Ananta Chaturdashi is considered and mark as the end of Ganesha Festival. ... People take the idol of Lord Ganesha to the water bodies and immersed him in sea, river, pond or lake.