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This paper attempts to determine the ex post impact of Chashma Right Bank Canal (CRBC) on the land use and cropping pattern of D.I.Khan district. CRBC commands 250,000 ha and spread over two provinces. The CRBC project was completed in three stages. Stage I was commissioned in 1987-1988, whereas stage II and III in 1989 and 2001, respectively. CRBC brought radical changes in the land use and cropping pattern of D.I.Khan district. For this study, three variables were selected including land use, cropping pattern and land values. To determine these changes at micro-level, five sample villages were randomly selected, four from within the CRBC command area and one off the command area. The analysis found that after commissioning of CRBC, prime cultivable land was brought under non-agricultural use. The area under net sown was also enhanced. The dry farming crops were replaced by water intensive cash crops, which in effect caused the twin problem of waterlogging and salinity, particularly in stage I. Likewise, the land values increased considerably. This study is a sort of ex post evaluation of CRBC and provides policy guidelines for decision makers not to repeat the weaknesses of Chashma Right Bank Irrigation Project. The guidelines will be valuable for the proposed Chashma Right Bank 1st Lift Irrigation Project