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
This category is within the scope of WikiProject Islands, a collaborative effort to improve the coverage of islands 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.IslandsWikipedia:WikiProject IslandsTemplate:WikiProject IslandsIslands
This category is within the scope of WikiProject Rivers, a collaborative effort to improve the coverage of Rivers 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.RiversWikipedia:WikiProject RiversTemplate:WikiProject RiversRiver
Start a discussion about improving the Category:Islands of the Sacramento–San Joaquin River Delta page