A  water storage tank was proposed near the southern end of Fountaingrove Lake; the city of Santa Rosa has approved this project to add to the municipal drinking water supply, subject to erosion control measures to protect Fountaingrove Lake from excessive siltation.
A water storage facility was proposed at the southern edge of Fountaingrove Lake; the city of Santa Rosa has authorized this plan to increase the municipal drinking water supply, contingent upon erosion prevention strategies to protect Fountaingrove Lake from sediment buildup.