autonomous bodies, person or persons have been prevented from creating any obstruction by making any type of construction or by covering the Singh Nallah. Undisputedly, the said Nallah being a public drainage vest in the State and under the Act nobody can obstruct the said Nallah by covering the same without prior approval from the authorities. By the said notification, a direction was also issued to all the concerned persons to remove all the constructions created by them, if any, on the `Singh Nallah Choe', so that natural flow of rainy water is maintained. The petitioner is not the owner of the said Nallah and the same vests in the State. In view of these facts, we do not find any substance in the prayer made by the petitioner because admittedly before covering the said Nallah no prior approval was ever obtained. We are also not convinced with the argument of the learned counsel for the petitioner that the R.C.C. slab constructed by the petitioner on the top of the Nallah is in no way causing any hindrance in free flow of water in the Nallah. In our opinion, it is for the authorities to see whether any obstruction has been caused or not. As far as the petitioner company is concerned, it is not having any right to cover the said Nallah by putting the R.C.C. slab without seeking prior approval. Therefore, we do not find any ground to quash the impugned notices.