California Code, Fish and Game Code - FGC § 3704

Two dollars and twenty-five cents ($2.25) of the amount collected by the department for each state duck stamp sold shall be allocated by the commission for the purposes of the North American Waterfowl Management Plan in those areas of Canada from which come substantial numbers of waterfowl migrating to, or through, California.  These funds shall be matched with federal or private funds available for that purpose.  The available balance of the funds shall be used for any project authorized pursuant to Section 3702 in California.  However, any lands acquired in California with those funds shall be open to waterfowl hunting as a public shooting ground or wildlife management area.