In Colorado, this is governed by statute: CRS 16-13-302(2) (public nuisance) and CRS 16-13-501.5(2) (contraband forfeiture act).
Download the 2019 Fund Balance Sheet here: 2019 Forfeiture Balance Sheet
Download the 2018 Fund Balance Sheet here: 2018 Fund Balance Sheet
Download the 2017 Fund Balance Sheet here: 2017 Report