To describe oligohydramnios in terms of age, parity, gestational age wise distribution, maternal morbidity and perinatal morbidity. Methods: A prospective study was carried out in Department of OBG, Govt Kilpauk Medical College Hospital, and Chennai. History, clinical examination and Ultrasound carried out to determine Amniotic fluid index for 12000 third trimester antenatal mothers in the study period. 150 patients detected with oligoamnios were followed up and analysis of outcome carried out. Results: The mean gestational age was 36.7+/-4.1 weeks. The mean amniotic fluid index was 3 +/-1.04cm. Gestational hypertension was present in 24% cases. 20% had postdated pregnancy. Incidence of intra uterine growth restriction was 14%. The rate of cesarean section was 63% and that of vaginal delivery was 35%. APGAR score of less than 7 at 1minute was noted in 16.66% and 5 minutes in 17.33% newborns. The gross perinatal mortality was 2.6%. Conclusion: All cases of oligohydramnios need careful antenatal evaluation, parental counseling, individualized decision regarding timing and mode of delivery. Continuous intrapartum fetal surveillance and good neonatal care are necessary for better perinatal outcome.