Minnequa Dam is the last remaining barrier between Leadville and Pueblo Reservoir that restricts boat and fish passage. Historically, native species like the flathead chub and the Arkansas darter thrived in this section of the river, but were extirpated due to mining pollution in the late 19th and early 20th centuries. While water quality has significantly improved, the dam may still impede natural recolonization of these species.

Additionally, a 1.6-mile section of the river remains inaccessible to boaters and anglers due to the structure. If solutions can be identified, this project could increase safe access for recreational users, support local businesses, and further enhance the region’s outdoor economy.

Most importantly, this project is a community-driven effort. Local governments, water users, conservation organizations, and community members have come together to fund and guide this study, ensuring that any future decisions align with the needs of the Arkansas River Basin while maintaining existing water use needs.

As ARWC and our project partners undertake this feasibility study, we’re asking important questions: Could a redesign of the Minnequa Diversion Dam improve habitat connectivity? Could it enhance recreational access while maintaining critical water diversions? This study is the first step in evaluating potential opportunities to strengthen the river’s health and community value. While no final decisions have been made, here’s what we’re exploring:

Enhancing Recreational Access & Community Value

Currently, a 1.6-mile stretch of the Arkansas River is largely inaccessible to boaters and anglers due to the dam. This feasibility study will assess whether modifications could create safe and sustainable boat passage, making this section of the river more accessible for recreation. Increased connectivity could provide opportunities for fishing, paddling, and other river-based activities, strengthening the local outdoor economy and benefiting businesses that rely on river recreation.

This study is just the beginning of a collaborative effort to understand what’s possible for this section of the Arkansas River. By working closely with water users, landowners, and community stakeholders, we aim to identify solutions that support both the river’s long-term health and the communities that depend on it.

This multi-phase effort begins with gathering data and assessing potential solutions.

Phase I: Feasibility Study (Current Phase)

• Assessing the potential for structural modifications to the dam to enhance ecological resilience while meeting current water usage requirements.
• Engaging with stakeholders, including landowners, water managers, and recreation advocates, to gather input and align goals.
• Developing preliminary design concepts to explore potential solutions for fish and boat passage.

Phase II: Design Refinement & Planning (If Determined Viable)

• Choosing the most effective passage design based on the outcomes of the feasibility study.
• Refining engineering plans, securing necessary permits, and identifying additional funding sources to move forward with implementation.

Throughout this process, stakeholder collaboration remains central. Landowner input, water management considerations, and community priorities will shape next steps and determine whether future phases advance.

This feasibility study is made possible through a mix of state, nonprofit, and local funding sources, including the Colorado Water Conservation Board’s  Federal Technical Assistance Program and contributions from a diverse coalition of community partners.

This funding reflects the broad support for exploring innovative solutions to maintain a healthy, accessible, and connected Arkansas River.

(Want to learn more? Read the funding announcement that helped launch this project!)

Interested in learning more or getting involved? ARWC will continue sharing project updates through our website, newsletter, and stakeholder meetings. Check out our socials and sign up for our newsletter to learn more.