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Council committee backs $199,697 study to prioritize dredging for eight city lakes
Summary
Staff recommended and the committee approved a preliminary engineering study by SK Design Group to develop a prioritized, costed plan for dredging eight city-owned lakes, including techniques, cost estimates and sequencing; the fee was not to exceed $199,697.
Public works staff recommended the city hire SK Design Group to perform a preliminary engineering study for dredging eight city-owned lakes: Southlake, Regency Lake, Summercrest, Amesbury Lake, Margaret's Pond, Kemper Pond, Kingston Lake and Wilderness Lake. Staff explained prior dredging (three lakes in the last decade), the typical dredging cycle (roughly every 7-30 years depending on sedimentation), and two primary dredging approaches (mechanical dewatering and hydraulic dredging). "This plan will provide the city with direction on how to enhance water quality, wildlife habitats, while expanding stormwater retention capabilities," staff said.
The study will (1) establish a baseline of existing conditions, (2) identify constructability and best-practice methods for each lake, (3) analyze public impacts and fish/wildlife salvage needs, and (4) prepare prioritized cost estimates to inform budgeting. Staff recommended approval of an agreement with SK Design Group for a fee not to exceed $199,697, and the committee voted to recommend the selection and fee approval to the city council. Staff also noted the stormwater utility has contributed funding for dredging and that dredging projects can be costly and periodic.
