The organizational memory constructed inside organizations should take multiple utilities, focused in search of efficiency. And with adequate data, the capacity of being reused should be intended to desired benefits. That organizational memory is product of interaction what people keep on conforming social networks that generate streams of information to store into the memory. In this paper we suggest that Social Networks in conjunction with the generated social capital construct isolated organizational memories within distinct levels. To discover if this symbiosis between organizational memory and social networks exists, was made a conceptual review and analyzes from research cases that show how this linking is given. Finally we formulated 4 generic levels (of Organizational Memory and Social Networks) that would be founded within any organization. Then, we conclude that the ties integrating these 4 types are the generators of an obligatory coexistence by knowledge developing and sharing. © 2008 PICMET.