Local wisdom in the spring has an important role in maintaining and preserving the spring in Gondang Village. The emergence of local wisdom is based on developing traditions and conservation values in the region. In 2019, Gondang won the title as the Proklim Utama at the national level and is currently in the process of submitting it to Proklim Lestari Village. One of the programs carried out by Gondang Village is carried out to maintain the river based on local wisdom called Grebeg Susuk Wangan. The method used in this research is literature study, observation and interview. The results showed that the Grebeg Susuk Wangan is done once a year, namely on Friday Wage between February and March. There are several events in the Grebeg Susuk Wangan conducted by the residents of Gondang Village, namely environmental gatherings, craft exhibitions, art performances, and planting hard trees. At present, the partnership in implementing Grebeg Susuk Wangan is still limited to local individual organizations, institutions and communities. Therefore, suggestions that can be given to the Gondang Village Government are 1) partnering with companies as a form of CSR, 2) inviting and involving Adiwiyata schools in its implementation, and 3) inviting journalists to cover activities.

Way Seputih watershed is one of the important watersheds located in Central Lampung Regency and is a source of waters both agriculture and industry. The occurrence of floods that occur during the rainy season is due to reduced forest cover that is converted to agricultural land and settlements. In the Way Seputih River many sand mining activities will have implications for the sedimentation process at the downstream of the Way Seputih River. The purpose of this study is to identify the effects of sedimentation using the SWAT model. To find out changes in land use/cover using the SWAT SUFI-2 analysis. Calibration and Validation are carried out to obtain the accuracy of the model. Model accuracy is measured using Nash Sutcliffe Efficiency values (0.58 and 0.62), and coefficient of determination (R2) (0.69 and 0.62). This condition is influenced by the runoff curve number (CN2.mgt) factor. Sediment prediction averaged 117,027 tons/ha in each sub-watershed. Good management is needed to reduce the rate of sedimentation.