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Engineer: North Center Lake likely shifted to more turbid state in 2025; suggests ‘stay the course’ management
Summary
EOR environmental scientist Jimmy Marty told the LID board that a Point Intercept survey of North Center Lake on Aug. 12, 2025, suggests climate conditions moved the lake toward a more turbid, algae-dominated state; he recommended continuing current water-quality management.
Jimmy Marty, environmental scientist with EOR, presented results from a Point Intercept survey of North Center Lake conducted Aug. 12, 2025, and described the sensitivity of shallow-lake systems to environmental changes and management techniques.
Marty said shallow lakes typically exist in either a turbid state dominated by algae or a clear state dominated by abundant aquatic vegetation, and that "the tipping point between these states is very sensitive and may be influenced by both environmental stressors and management techniques." He added, "It seems likely that climate conditions shifted North Center toward a more turbid state in 2025," and recommended the board "stay the course" on existing water-quality management.
The board received the survey as part of New Business and did not adopt an immediate new management action at the meeting. The survey results will inform ongoing planning and potential interventions, including monitoring, vegetation mapping and discussion of harvest or treatment options where feasible.
