Reservoir Fish Escapement in North America: A Historical Review and Future Directions

Lewis, Madeline C.; Cope, W. Gregory; Miles, Thomas P; Rude, Claire; Bruesewitz, Richard E.; Dodd, Benjamin J.; Flammang, Mark; Page, Kevin S.; Weber, Robert E.; Weber, Michael J.; Wolter, Max Hilaire

doi:10.1002/nafm.10790

Cited by 4 publications

(30 citation statements)

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“…Proliferation of impounded rivers and streams in the past century has led to imperilment of many afected fsh species [2]. One of the more deleterious impacts of dams on native lotic specialists has been impeded movement, including spawning migrations, and has led to population fragmentation [2,3,5,8,[17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Fish Assemblages of the Neosho River System

Rasset,

Kim,

Neely

et al. 2024

Journal of Applied Ichthyology

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Barrier presence in river systems has been demonstrated to impair fish assemblages. Low head dams specifically are frequently occurring barriers in riverine environments. Well-supported impacts of these structures on fishes include diminished movement, reproduction, and habitat availability. Longitudinal patterns in riverine fish assemblages have long been researched to ascertain dynamics and display interactions. The need for research becomes more critical when factoring in impacts of barriers and detrimental invasive species. Knowledge of fish assemblages can inform fisheries biologists and aid in improved management practices for recreational and ecologically important species, as well as invasive species. The Neosho River system in Kansas has 14 barriers present. Little fisheries sampling has been done in the Kansas portion of this river system from the John Redmond Dam to the Oklahoma border; therefore, sampling was conducted to inform questions posed about the fish assemblages. We sought to document the fish assemblages of the system in Kansas and examine for assemblage composition distinctions by geographic region along a longitudinal gradient. The fish assemblage dataset from this research generated a wealth of knowledge on sportfish infiltration from reservoirs, imperiled fishes, and apparent impacts from low-head dams. Information from this study will aid in future management and direct new research investigating imperiled fishes.

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Section: Introductionmentioning

confidence: 99%

Investigating the Fish Assemblages of the Neosho River System

Rasset,

Kim,

Neely

et al. 2024

Journal of Applied Ichthyology

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“…Changing outflow patterns will also affect fish escapement and downstream connectivity (Lewis et al 2022, this special section). Lewis et al's (2022) review indicated that fish escapement from reservoirs during high-water events can be substantial and is species-specific but can also be successfully reduced by retention structures (e.g., fish barrier fences). Fisheries managers face watershed-scale issues that likely fall outside their control (Allen et al 2008), and although they may become increasingly involved in discussions regarding broader basin issues, many times these decisions are made with little regard for reservoir fisheries (Fowler 2008).…”

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confidence: 99%

“…The prediction of Allen et al (2008) that water use issues in reservoir management were likely to increase has been borne out especially in the U.S. West, where Lake Mead on the Colorado River reached its lowest level ever recorded in July 2022 due to an ongoing historic drought and overallocation of water for agriculture and municipal uses (Udall and Overpeck 2017;Carlowicz 2022). Changing outflow patterns will also affect fish escapement and downstream connectivity (Lewis et al 2022, this special section). Lewis et al's (2022) review indicated that fish escapement from reservoirs during high-water events can be substantial and is species-specific but can also be successfully reduced by retention structures (e.g., fish barrier fences).…”

mentioning

confidence: 99%

“…Changing outflow patterns will also affect fish escapement and downstream connectivity (Lewis et al. 2022, this special section). Lewis et al.…”

mentioning

confidence: 99%

“…Lewis et al. 's (2022) review indicated that fish escapement from reservoirs during high‐water events can be substantial and is species‐specific but can also be successfully reduced by retention structures (e.g., fish barrier fences). Fisheries managers face watershed‐scale issues that likely fall outside their control (Allen et al.…”

mentioning

confidence: 99%

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Old Reservoirs, Old and New Challenges: Introduction to the 2021 Reservoir Symposium

Sammons

Krogman

2023

N American J Fish Manag

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Economic evaluation of barriers to minimize reservoir sport fish escapement

Lewis,

Tyndall,

Dodd

et al. 2024

N American J Fish Manag

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ObjectiveBarriers can be an effective method for reducing escapement of reservoir sport fish; however, whether the financial benefits of a barrier outweigh the costs of a barrier is unknown. We sought to quantify the costs and benefits associated with constructing barriers to reduce fish escapement while explicitly accounting for variability and uncertainty.MethodsWe developed a framework using simulation modeling and discounted cash flow techniques to quantify the costs and benefits of barrier construction on Brushy Creek Lake, Iowa, where a barrier was constructed in 2020 to reduce escapement of stocked Walleye Sander vitreus and Muskellunge Esox masquinongy. We then incorporated this framework into an interactive Shiny application to enable cost–benefit evaluations across a wide range of barrier types, system types, species, and escapement rates.ResultThe present value of the parallel‐bar barrier on Brushy Creek Lake, Iowa, over 10 years was US$69,576 (range = $64,484–$73,976), whereas the present value of escaped fish was $316,416 ($253,459–$378,823), indicating a net benefit of $246,840 ($188,975–$304,847) associated with barrier construction. The benefit–cost ratio of barrier construction was 4.55 after 10 years, indicating that for every $1 in present value spent on barrier construction, we saved $4.55 by preventing fish escapement. There was a 99% probability of a positive mean net benefit of the barrier after 3 years.ConclusionOur results indicate that barriers can be a cost‐effective option to minimize fish escapement, and barrier costs are more predictable compared with the cost of escapement. Quantifying the value of escaped fish and barrier construction on an economic scale enables the use of formal decision‐making tools to address complicated and multifaceted issues associated with reservoir fisheries management.

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Reservoir Fish Escapement in North America: A Historical Review and Future Directions

Abstract: Downstream escapement of fishes from reservoirs via release structures can represent a loss to populations that is comparable to natural and harvest mortality. Consequently, quantifying and managing fish escapement constitute a

Cited by 4 publications

References 82 publications

Investigating the Fish Assemblages of the Neosho River System

Investigating the Fish Assemblages of the Neosho River System

Old Reservoirs, Old and New Challenges: Introduction to the 2021 Reservoir Symposium

Economic evaluation of barriers to minimize reservoir sport fish escapement

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