9:30 A.M. - Consideration of Presentation on the UC Davis Clear Lake Restoration Project

Summary

This item presents the UC Davis Clear Lake Restoration Project, focusing on a pilot oxygenation study for restoration goals. UC Davis TERC, in partnership with USGS, has studied Clear Lake's water quality issues for three years. Their findings indicate that lakebed soils are the primary source of excess phosphorus, contributing up to 70% of the total phosphorus load and causing Harmful Algal Blooms (HABs) and fish kills. The proposed solution is a Hypolimnetic Oxygenation System to add oxygen to the lake bottom when levels drop, preventing internal loading. The project aims to install and operate a prototype system in the Oaks Arm by summer 2026, with secured funding of over $5 million for three years of operation to collect data and measure impact. Goals include monitoring oxygen levels, avoiding HABs and fish kills in the Oaks Arm, and delivering water quality improvements to support the local economy and cultural uses, with the potential to develop a broader lake solution.

Citizen Impact

This project aims to improve water quality in the Oaks Arm of Clear Lake by addressing the root cause of algal blooms and fish kills. Residents can expect improved recreational opportunities and a healthier ecosystem in the Oaks Arm, potentially leading to broader restoration efforts for the entire lake.

Confidence

high