This category is within the scope of WikiProject California, a collaborative effort to improve the coverage of the U.S. state of California on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.CaliforniaWikipedia:WikiProject CaliforniaTemplate:WikiProject CaliforniaCalifornia articles
Category:Lakes of Contra Costa County, California is within the scope of WikiProject Lakes, a collaborative effort to improve the coverage of lake-related articles on Wikipedia, using the tools on the project page. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.LakesWikipedia:WikiProject LakesTemplate:WikiProject LakesLakes articles
