Abstract: A variable vortex, baffle fluid filter apparatus for installation primarily in urban storm water drain sumps. A circular, filter channel that is enclosed on all four sides by filter screens, includes a cylindrical baffle screen that is attached concentrically below the channel for moving impurities to the sump bottom. Provision is made for manually adjusting the velocity of the fluid inlet flow. An angle adjustable, pivotable vane is provided in front of the inlet opening to adjust inlet flow velocity and vortex strength, to keep inlet impurities from sticking to the filter screens. The filter unit provides 150 percent more treatment capacity than comparable filter units and provides easy access for maintenance to all parts.