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Stormwater

Douglas County’s Stormwater MS4 Permit Program Description Document (PDD) is available for public review and comment, beginning Jan. 1, 2019, Monday- Friday, from 8 a.m. – 5 p.m.   A copy of the PDD may be reviewed and/or obtained in person from the Douglas County Department of Public Works Engineering, 100 3rd Street (2nd floor), Castle Rock, CO 80104.

To report spills and concerns regarding stormwater please contact the Stormwater Hotline 303.663.6181 24/7.

In 2013 Douglas County passed a Stormwater Ordinance that committed the County to taking a proactive role in the management of its stormwater system as a part of providing quality services to its citizens through coordination between federal, state, and local government for compliance to federally-mandated programs, including the Colorado Clean Water Coalition.  The County’s Stormwater Standard Operating Procedures ensure consistent effective practices are implemented at all County-owned or operated facilities.

The Storm Drainage Design and Technical Criteria Manual  provides guidance to developers and the County for effective management of stormwater and stormwater systems.  Operation and Maintenance templates are provided for design engineers.  Inadequate stormwater management can result in flooding, infrastructure and property damage, excessive soil erosion, degraded open space, unacceptable water quality in potable water supply reservoirs and other water bodies with decreased recreational and/or fish and wildlife values.

Our stormwater program also provides public education, information on property disposal of yard waste for businesses and residents.  We even provide information for paint recycling.  We track stormwater system impact activities, and review of projects that have the potential to impact the stormwater system including illicit discharge, detection and elimination.  Unpermitted discharges are eliminated, cleaned up properly, and reported to the State Water Quality Control Division.