The Town of Blue River recognizes the importance of maintaining a natural mountain environment. To that end, the Board of Trustees have adopted a "Dark Skies" ordinance. The ordinance applies to all new construction, additions, remodels and changes occurring after August 1st. While the ordinance is comprehensive it is not designed to be completely "dark sky" compliant. It is the goal of the Town of Blue River to provide information and resources for homeowners to work towards the long term goal of being a dark skies community.
Five Principals for Responsible Outdoor Lighting
Useful-All light should have a clear purpose
Before installing or replacing a light, determine if light is needed. Consider how the use of light will impact the area, including wildlife and the environment. Consider using reflective paints or self-luminous markers for signs, curbs, and steps to reduce the need for permanently installed outdoor lighting.
Targeted-Light should be directed only to where needed
Use shielding and careful aiming to target the direction of the light beam so that it points downward and does not spill beyond where it is needed.
Low Light Levels-Light should be no brighter than necessary
Use the lowest light level required. Be mindful of surface conditions as some surfaces may reflect more light into the night sky than intended.
Controlled-Light should be used only when it is useful
Use controls such as timers or motion detectors to ensure that light is available when it is needed, dimmed when possible, and turned off when not needed.
Color-Use warmer color lights where possible
Limit the amount of shorter wavelength (blue violet) light to the least amount needed.