Stormwater Master Plan

The Town recently completed Stormwater Master Plan, funded by a CDBG-DR grant from HUD.

This plan updates a previous plan completed in April 1998. In addition to the basic updates of that plan, this plan modernizes the techniques used for runoff determination at various storm events, introduces concepts of updated codes and standards, water quality treatment of runoff, identifies areas at risk for flooding or inundation during various runoff events, identifies large scale capital improvement costs for the major runoff basins, identifies alternatives that could be considered in developed and undeveloped areas of the Town and adjacent unincorporated areas of Boulder County, and other important elements of a storm water master plan. 

This plan will be a useful tool for the Town of Lyons Board of Trustees and Staff to help prioritize and identify capital improvements and to inform land and homeowners of issues and concerns related to their property; for landowners and business owners to understand and be informed of the conditions of the storm water runoff; and for developers to understand issues and constraints and potential capital investments related to projects and development. Consultants will be on hand to discuss the plan. 

Draft Master Plan


Use the links below to review the draft plan and submit feedback.

Draft Stormwater Master Plan >>

Draft Stormwater Master Plan PDF >>

Draft Stormwater Master Plan Interactive Map >>


Submit Feedback


Submit Feedback on the Draft Stormwater Master Plan >>

To submit feedback, drag the RED marker to your location of interest (you can zoom and pan the map in order to accurately place your marker), and fill out the form in the popup. Please note that once you submit, the marker will turn BLUE and is no longer movable.

Your comment can be seen in the map, but your personal information will not be visible to the public.
If you wish to make additional comments, drag the RED marker again and a new form will become available.


Previous Master Plan


The previous drainage master plan, completed and adopted in April 1998, can be found here.

April 1998 Drainage Master Plan >>