This database contains breeding pond use data (i.e., egg mass and larval abundance counts) of three ambystomatid salamander species (Spotted salamander, Jefferson salamander, and marbled salamander) collected from 200 individual aquatic habitats (ponds, wetlands, and impoundments) in the Delaware Water Gap National Recreation. Data were collected between the years 2001 and 2003. The database contains three separate table files (i.e., entities) in csv format: 1) Salamander egg mass/larval abundance counts; 2) site habitat data; and 3) site location data. The salamander data file includes egg mass counts for Spotted and Jefferson salamanders and presence/absence data for Marbled salamander larvae for Marbled salamanders collected during three spring surveys during 2001, 2002, and 2003. The site habitat file contains a suite of inpond, near-pond, and landscape attributes associated with each of the two hundred sites. The site habitat Site location data file consists of UTM coordinates (NAD 1983, UTM zone 18N) for the 200 sites sampled.