California Code, Fish and Game Code - FGC § 13101

(a) The board of supervisors of any county may enter into a written agreement with the board of supervisors of one or more counties for the expenditure of any funds deposited in its fish and wildlife propagation fund pursuant to Section 13100 for any purpose authorized by Section 13103 in either, or any, of the counties for the joint benefit of both, or all, of the counties as the judgment of the boards of supervisors may direct.  The purchase of real property necessary for that purpose is lawful and title thereto shall be taken in the joint names of each county which contributes funds therefor.  The property may be deeded to the state upon the express condition that it shall be employed for the purposes of this chapter within the counties.

(b) The board of supervisors of one or more counties may enter into a written agreement with the department for the expenditure of any funds deposited in its fish and wildlife propagation fund pursuant to Section 13100 for any purpose authorized by Section 13103.