Maple grove Reservoir Dam Study

The Maple Grove Dam is located within an urban area. It also serves as a domestic water supply reservoir and a critical flood mitigation zone for the Lena Gulch Watershed. The Dam safety and critical infrastructure operation is vital to our customers and the local community. Our recent study has analyzed the reliability of our system working as intended and highlighted areas where we can improve.


  • Highlighted areas where Maple Grove Reservoir dam can be improved.
  • Addressing the high-hazard classification that CO State Dam Safety has for this facility.


100% complete with Colorado SEO Dam Safety Adequacy Acknowledgement Letter received July 18, 2023

Next Steps

  1. Use these study findings to make operational improvements.
  2. Facility re-classification (previously classified as “high-hazard”).
  3. Factor in results to begin designing for reservoir expansion.