The report indicates that there is a. good potential for cloud seeding in the Copeton Dam region. Should cloud seeding go ahead there a.re a number of individual gauges and groups of gauges which, in their present positions, could act as very good predictors of the rainfall in the Copeton Dam region. This is essential for a good cloud seeding experiment. The odds of detecting a 30 percent increase in precipitation are about 4:1 in a 5-6 year experiment and for a 20 percent increase about 2:1