Hello @Jitender
Welcome to the Bunnings Workshop community. It's sensational to have you join us, and thanks for sharing your question about your sewer cover. If you are after a temporary waterproof cover, I suggest tracing the size of hole in pine or plywood and cutting a timber cover that will fit. I then suggest painting the timber in Gripset Betta 1L Waterproofing Membrane Bitumen Rubber on both sides to make it waterproof. You can drill a hole in the center to allow you to remove the cover if necessary.
Another option is to give your local council a call and find out if the cover falls under their responsibility and ask them if they can provide a cover.
If you have any other questions we can help with, please let us know.
Eric
