Agriculture is one of the main foundations of Iran's development. There is a lack of integrated management, timely and accurate information in this aspect of development. Limitation of water sources inside borders and necessity to boost the production rate of agricultural products sharpens the importance of studying in the matter. For planning and managing agricultural land uses, accurate information about agricultural products and their water needs are of the utmost importance. Simultaneous function of these two systems will make an integrated managerial approach and decision making more efficient for distributing the water. Due to semi-arid nature of central Iran and the concentration of water demanding industries in this area (agriculture, steel industries, urban land uses, etc.) management of surface waters, especially in agricultural uses which has the most uptake of water, seems critical and crucial. In the sub-basin of Lenjanat, Zayanderood river is the main source of fresh water and due to climate change (reduction in precipitation) and mismanagement (discharge of underground water resources), distribution of it has become a challenge for natural resource management. In this study, Landsat 8 images in three dates (1 Khordad, 2 Tir, 19 Mordad 1396) were used to identify tillage patterns and land-use /land cover in this subbasin and areas shared with other counties (such as Lenjan, Dehaghan, Mobarake, Felavajan, Semirom, Shareza, Tiran, Najafabad and Chadegan from Isfahan and Shahrekord and Borojen from Chaharmahalvabakhtiari) and primary information about distribution of different tillages was attained by using pixel-based and Object-based methods for the area. Then Jahad's data was used to examine the accuracy of attained data and compared to them for each county. Water demand of each product in one agricultural growth year was attained by wide literature review. Using Jahad's data showing the presence of each tillage and its expanse, an average water use in the basin was calculated. Main cultivations in the basin included wheat, rice, other cultivations, dry farming, water, man-made, rocks, bad rangelands, good rangelands, gardens, man-made forests and lands with spread vegetation cover and in the counties with shared border included autumn cultivations, spring, composite, gardens and man-made forests. Among agricultural land-uses in the study area, other cultivations and wheat dominated with 3827ha and 2313ha, respectively. In counties, autumn cultivation was most expanded and composite cultivation was least expanded. Rice as a product with high water demands had an expansion of more than 2780ha of the studied area which shows a lack of sufficient managerial approaches according to appropriate tillage patterns in this area. Water demand of Lenjanat sub-basin was calculated using weighted averaging and is reported 234.4 million m squared annually. Results of this study provided comprehensive view of tillage patterns in the studied area and the amount of agricultural water use in the sub basin. However, more studies are needed to evaluate the effects of adjustment of tillage patterns and sufficient water usage on the reduction of water use in this development. Keywords: Remote Sensing, Landsat 8, Tillage Patterns, Agricultural Water Usage, Lenjanat Sub-basin