Following is a roundup of major Northern California casinos and their smoking policies: -- Jackson Rancheria, Jackson (Amador County): Smoking is allowed, with no-smoking slot-machine areas. The poker room is nonsmoking. -- Twin Pine Casino, Middletown (Lake County): Smoking allowed on gaming floor and at poker tables, but not in its hotel or restaurant. You can't smoke at the cash cage. -- Cache Creek, Brooks (Yolo County): Smoking permitted on the gaming floor but not in the poker room. For slots, there are smoking and nonsmoking areas. -- Sho-Ka-Wah, Hopland (Mendocino County): Most of the casino allows smoking, but there are some nonsmoking areas. -- River Rock, Geyserville: Smoking allowed at slots and table games; there are no-smoking rooms for slot players. -- Thunder Valley, Lincoln (Placer County): Smoking is permitted, with nonsmoking areas for slot play. No smoking in the poker room, restaurants or pool area.Get the Story: