Manholes: an open sore - The Hindu
Manholes like bore wells are death traps. Poor maintenance, removal of manhole (possibly clogged) cover by somebody to allow draining of water stagnated in front of their house/building, theft of manhole covers, not putting back after dechoking, etc are some of the reasons which lead to fall of persons when it is even dry or not known to persons when covered with water, particularly in rains.
Few years ago, a person was washed off through the coverless storm water drain and his body was found few kilometres away in open canal.