Data routing is the major concern of every network whether it is wired networks or may be wireless networks. In this paper we measuring the data routing in wireless networks and we chooses LEACH protocol, this protocol that has been chosen by us because it is more energy efficient and when we use an level-2 Leach protocol then it covered more area as of LEACH protocol may not. In this paper we are measuring the data routing capability in wireless sensor networks and through this we calculate the results with TCP metrics Delay etc.