the perennial carbonera creek has a watershed of . the west branch of carbonera creek is a total of in length and passes under vine hill road. the west branch continues under scotts valley drive and the state route 17/granite creek interchange through a series of box culverts. the west branch joins the main branch of carbonera creek immediately south of the state route 17/granite creek interchange. carbonera creek is the major surface water hydrological feature in scotts valley, running across the western portion of the santa's village site and through the center of town.