Background: One of the frequent causes of abdominal discomfort observed in the emergency room is obstructive uropathy.The present study was conducted to assess the role of color doppler in obstructive uropathy. Materials & Methods: 54 patients of obstructed kidney of both genders were selected. Patients were kept in group I and controls in group II. Parameters such as clinical features were recorded.The interlobar arteries and veins of both kidneys were examined using color doppler ultrasound, and the arterial resistive and impedance indices were calculated. Both arterial and renal venous doppler studies of the interlobar arteries and veins were performed on all of the subjects. Results: Group I had 30 males and 24 females and group II had 27 males and 27 females. Duration of pain was <24 hours in 34, 24-48 hours in 12 and >48 hours in 8 cases. clinical features in group I were loin pain in 30, hematuria in 25, and vomiting in 18 patients. Site of obstruction was PUJ in 37, VUJ in 12 and ureter in 5 cases. The difference was significant (P< 0.05). The mean resistive index was 0.78 in group Iand 0.67 in group II. The mean venous impedance was 0.32 in group Iand 0.45 in group II. The difference was significant (P< 0.05). Conclusion: The venous impedance index decreased in the majority of blockage instances. Patients with obstructive uropathy have been reported to benefit from color doppler.