Held in Snowbird, Utah July 26-28, 1990. The LTER Program is unique in that it represents a network. An explicit goal of the LTER program is to study ecological processes that require measurement over long periods of time (years to decades to centuries). The LTER Data Managers recognized these two aspects of the LTER program and devoted their 1990 LTER Data Managers Workshop to the discussion and resolution of several associated problems and challenges in meeting these objectives.