This study was taken up in the Kalve watershed of Uttara Kannadadistrict to assess the impact of watershed management on tree densityand diversity in forest areas. Watershed management practices suchas trenches, vented dams and ponds were compared with untreatedforest area. The tree density and basal area showed a significantincrease over the control plot. Trench- I and trench- II sites showeda maximum tree density (1500 and 1513 stems per hectarerespectively) and basal area (34.13 and 36.75 m2/ha respectively).The least density was found under the vented dam site followed bycontrol site. The tree diversity under the various watershed treatmentsshowed that the small pond site had the maximum diversity asexpressed by Shannon-Weiner (H=2.88) and Simpson (D=0.079) indexfollowed by the large pond site. The vented dam site showed a poordiversity than the control site.