The purpose of the present research is to examine the effect of coating the tertiary irrigation canals on farmers’ satisfaction in Sowme’eh Sara, Guilan. The study was conducted using a survey research methodology. The statistical population included 14 tertiary canalized schemes in Sowme’eh Sara up to the end of 2013, Including totally 2434 hectares .The share of each beneficiary was 0.7 hectare according to the extant statistics and documents in water and soil management of Agricultural Jihad Organization of Guilan. Based on Morgan and Krejcie’s Table, 340 beneficiaries were chosen by stratified random sampling. The main data collection tool was a self-made questionnaire whose face and content validity was improved and finally accepted by water and soil experts and professors. In order to determine the reliability of the research, the questionnaires were answered by 30 members of the statistical population. Afterwards, using SPSS software and Cronbach’s alpha test, the questionnaire’s sustainability was assessed and 78% was computed and confirmed. The independent variables under study were age, literacy, the number of individuals under guardianship, workload, product performance, costs, securing agricultural goals etc. and the dependent variable was farmers’ satisfaction of coating the streams. Each of the variables was categorized and assessed based on Likert Scale. The effect of each independent variable on farmers’ satisfaction was evaluated through SPSS software and Spearman’s rank correlation. The results showed that there is a semantic relationship between literacy, workload, product performance, costs and securing agricultural goals variables and farmers’ satisfaction.