Stormwater Projects

Lone Hill Park Regional Watershed Management Program 

The City of San Dimas (City) is implementing the Lone Hill Park Regional Watershed Management Program (WMP) Project (Project) to address the East San Gabriel River (ESGR) watershed’s limiting pollutants (metals [zinc] and bacteria) associated with San Dimas Wash.  The City is a participant in the East San Gabriel Valley (ESGV) Watershed Management Group (WMG), which is composed of the Cities of Claremont, La Verne, Pomona, and San Dimas.  The ESGV WMG developed the ESGR WMP, which identified projects, including this Project, to improve water quality. The Project will provide multiple benefits while assisting the City in addressing regulatory requirements. For more information, visit this link .

Drainage Area Figure 
Proposed Improvements Project Map 
Proposed Stormwater Improvements

Marchant Park Regional Watershed Management Program

The City of San Dimas (City) is implementing the Marchant Park Regional Watershed Management Program (WMP) Project (Project) to address limiting pollutants associated with Walnut Creek Watershed and to address the Total Maximum Daily Load (TMDL) requirements associated with Puddingstone Reservoir and Los Angeles Area Lakes.  The City is a participant in the East San Gabriel Valley (ESGV) Watershed Management Group (WMG), which is composed of the Cities of Claremont, La Verne, Pomona, and San Dimas.  The ESGV WMG developed the ESGR WMP, which identified this Project as a priority project to improve water quality. The Project will provide multiple benefits while assisting the City in addressing regulatory requirements. For more information, visit this link .

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Drainage Area Figure
Preliminary Stormwater Improvements Concept
Aerial Concept 

San Dimas Assistant