JMT assisted the Baltimore City Department of Public Works (DPW) and the Fire Department to reconcile fire hydrant location information maintained by multiple City agencies, in an attempt to create one definitive source for hydrant locations. 

First, handwritten hydrant inspection cards maintained by each of the City's 56 fire companies were compared to hydrant information as it was stored in the DPW's GIS database.  Any discrepancies were field checked by members of the Fire Department. Once the database was updated and all of the hydrants in a given inspection area were verified, the final phase involved producing a wall-size street map for each inspection area detailing hydrants and their unique ID numbers, while also updating the E911 CADD system with any hydrant changes.

Finally, the 9,500 fire hydrants within Baltimore City were validated against the water plats maintained by the DPW.  The project resulted in improved mapping of inspections areas for each fire company and improved mapping of hydrant locations across the city, as well as the opportunity to develop other uses for the data and further collaboration between DPW and the Fire Department.