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Princeton Hydro recently completed its first project in Colorado—a bathymetric assessment of the Fairplay Beach Reservoir. In partnership with the Town of Fairplay, this project focused on mapping the reservoir’s underwater landscape to support ongoing conservation efforts.
In this blog, we’ll dive into the details of the bathymetric assessment process, the significance of this work for Fairplay Beach Reservoir, and the role it plays in preserving the area’s natural beauty and resources.
A bathymetric assessment is a precise scientific method used to map the depths and contours of a waterbody. This process involves measuring water depths and quantifying accumulated, unconsolidated sediment, offering crucial insights into the underwater terrain. Bathymetric assessments play a vital role in long-term conservation efforts by providing essential data that informs decisions about the restoration and protection of the waterbody.
During the assessment, advanced equipment, including dual-frequency fathometers linked to GIS software and GPS systems, are used to collect data across the waterbody. The resulting maps provide a comprehensive view of the waterbody’s depth and sediment thickness. These maps are crucial for various management activities, including assessing the need for dredging, understanding sedimentation patterns and their impact on water quality and aquatic habitats, evaluating the colonization of aquatic plants, and analyzing the overall health of the aquatic ecosystem. Additionally, this data is used in trophic models to predict the reservoir’s response to incoming nutrients, further supporting the management and preservation of water quality.
A town steeped in history, Fairplay, Colorado was founded in 1859 during the Pike’s Peak Gold Rush. Located at nearly 10,000 feet in elevation, it is the largest community in the South Park grassland basin of Colorado. Today, Fairplay is a charming destination that attracts visitors with its opportunities for fishing, panning for gold, hiking and camping amidst the stunning backdrop of the Rocky Mountains.
Nestled in the heart of Fairplay, Fairplay Beach Reservoir is a small yet vital waterbody created in 1922 when a dam was constructed on the South Platte River. This high-altitude reservoir has become an essential recreation resource, particularly for brown and rainbow trout fishing. Fairplay Beach is also a central feature of the Fairplay River Park Master Plan, which focuses on preserving this important resource for future generations.
Princeton Hydro’s team, Senior Manager of Aquatics and Colorado resident Chris Mikolajczyk, CLM and Senior Environmental Scientist J.P. Bell, GISP, conducted the assessment in August 2024. Utilizing a dory boat equipped with state-of-the-art technology, the team meticulously mapped the reservoir’s depths and sediment layers. Michele White, a local Board member of the Pikes Peak Chapter of Trout Unlimited assisted the project team by offering her expertise as a local fishing guide and providing the dory to carry all of the survey instruments across the reservoir. The assessment covered 29 traverses across the reservoir, providing a comprehensive view of its underwater topography.
The data collected during this assessment will serve as a baseline for future studies, helping to track changes in water volume and sedimentation over time. It also provides critical insights for the Fairplay River Park Master Plan, guiding future decisions on dredging, habitat restoration, and water resource management.
As Princeton Hydro continues to expand its reach, we are excited to bring our expertise in water resource management to new regions like Colorado. The successful completion of the Fairplay Beach Reservoir bathymetric assessment is just the beginning of what we hope will be a long and fruitful partnership with communities and conservation organizations across the state.
We look forward to future opportunities to contribute to the preservation and enhancement of Colorado’s unique high-altitude aquatic environments. Stay tuned for more updates as we continue to explore new waters and chart new territories.
Over the last two decades, the Princeton Hydro team has improved water quality in hundreds of ponds and lakes, restored many miles of rivers, and enhanced thousands of acres of ecosystems in the Northeast. Recently, Smith Mountain Lake Association sought the expertise of Princeton Hydro to investigate the cause of a harmful algal bloom and protect the lake from future outbreaks. Click here to learn more.
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