Seismicity in the Alpine Fault region was investigated by relocating the New Zealand National Seismograph Network data for the 3-year period March 1991 through April 1994. The 3-year period of relocated seismicity revealed nine earthquakes per year of magnitude 2.5-3.6 along the Alpine Fault. These earthquakes extend to 10 km depth, and the Alpine Fault provides a northwestern boundary to a region of diffuse seismicity extending 70 km to the southeast, with a base gradually deepening from 10 km along the Alpine Fault to 20 km at its southeastward extent. Within the diffuse seismicity there are numerous small clusters. -from Author