NYU and GISMO's Unification for Underground Resilience Measures (UNUM) is a multi-faceted research initiative aiming to improve our understanding of the city's underground infrastructure assets from the community level through city government and private asset holders. The many activities within the scope of this project include: community collaboration on developing a digital twin of their neighborhood, use of open data to develop an integrated application for broader use, experiential art exhibits, and developing the tools and methodology to convert NYC utility data into a common data format using the Open Geospatial Consortium's MUDDI model. With a collaboration and stakeholder engagement approach to these civic infrastructure issues, the outputs of this body of work hopes to provide an important example of the value of data sharing and lead to greater innovation in data sharing across the city and beyond to increase the resilience of underground infrastructures in the context of natural hazards.