Ground-based interferometric gravitational-wave detectors in the LISA epoch

Ground-based interferometry for gravitational-wave detection is in a state of rapid evolution. Firstgeneration systems (LIGO, GEO, TAMA, VIRGO) are now (summer 2002) starting or will soon start observations, and second-generation instruments are well into the planning phases. By the time LISA joins the network of gravitational-wave detectors, we will have a mixture of second- and third-generation ground-based instruments observing. We give a description of some probable configurations for the ground-based instruments in that epoch.