Application of a Fish Barrier to Reduce Fish Entrainment at Lovewell Reservoir, Kansas

Kansas DWP&T staff explored options for enhancing fish populations in Lovewell reservoir in northeastern Kansas. An engineered barrier mesh screen system was selected, designed and implemented and was installed in 2012.  The paper presents alternatives considered, the selected barrier screen system design and approval process, installation and operations of the system since 2012.  Specific aspects regarding accomplishment of fish population objectives will be briefly considered but are not the focus of this presentation.

Project goals were: Reduce fish entrainment during max 650 cfs irrigation releases; Improve standing sportfish stock and condition; and, Assist irrigation district by reducing shad numbers.  Options to meet goals included: mitigated fish stockings, alteration of dam operations, rotating drum screen, behavioral barriers, and in-water, fabric mesh barrier screen. Reasons for screen selection are presented, including: 75+% retention for selected species, including juveniles; monitoring by visual inspection with minimal diving; failsafe if partially or fully blocked; and, failsafe from barrier impacting dam gates.  A ¼” reinforced, poly-coated mesh material was selected as the mesh matrix that has a natural resistance to fouling and Ability to be cleaned. The system installation (2012) and subsequent dynamics and O&M, and performance from 2012 – 2015 are addressed in this presentation.