Croton Dam Overflows First Time Since '64, but Drought Isn't Over; CITY'S CROTON DAM NOW OVER FLOWING
Croton Dam overflows 1st time since '64 but officials stress drought is not over; Deputy Comr Clark says drought has abated and predicts few restrictions this summer; says Croton system is 91.3% full; comments on potential runoff and conservation efforts; Croton Dam illus now and during typical dry spell