Haihole Dam is constructed across Kanee halla river near Haihole village about 12 Km from Shimoga city. Kane halla is a small tributary to Tunga River which originates in Shankaragudda hills and flows mostly in thick forest. This dam is located at longitude 75deg 28’ 45” E and Latitude 13deg 53’ 08” N in the limits of Haihole village in Shimoga taluk and district. This dam has been constructed during the period 1976-79 and is in operation since then The independent catchment area of the river at the dam site is 37.81 sqkm. The stream has its origin in a fairly heavy rainfall area with its entire catchment being in hilly and forest region and hence considered as Good for yield calculation. There are gauge stations situated near to the catchment area. However four influencing rain gauge station visa, (1) Malur (2) Aynur (3) Shimoga (4) Umblebylu have been considered for yield calculation. These polygons has been drawn on the basis of these four influencing rain gauge stations and the average rain falls have been calculated for these four rain gauge stations taking into consideration the rain fall of Ten years (1952 to 1963). The average rain fall works out to 98.55 cm with 70% dependability (year 1956) Considering the catchment area as Good for average annual rainfall of 98.55 cm the yield available at dam site is 13.52 cum (477.00 mcft.) apart from this perennially flowing two small streams across which the dam is constructed discharge about 0.11 to 0.14 Cumecs during the summer months due to the existence of some springs in the Shankaragudda hills also contribute to yield. There is good flow during the monsoon months and fair flow during November and December.