Abstract: A storm drain filter (1) that is easily installable and removable from a curb style water inlet (20) of a storm drain (23) and that is effective in preventing debris and unwanted substances from entering storm drains by collecting the debris while allowing water to pass through into the storm drain.

Abstract: A storm water filtration device for removing storm water contaminants includes a pocket portion, an engagement element(s), and an overflow port(s). As the pocket portion fills with storm water, contaminants having a specific gravity greater than 1.0 are collected within the pocket portion, while storm water continues flowing through the drain via the overflow port(s). Optionally, the pocket portion can include an inner liner disposed within the pocket portion. The liner can be formed of a porous material that can capture and retain liquid and/or solid contaminants carried by the storm water.