Island modifications can be incorporated into new reservoir design and during maintenance jobs with minimal costs and effort. The creation of small retention type reservoirs in the semi-arid regions is creating waterfowl habitat. Island development can easily be accomplished on retention reservoirs greater than two surface acres with the aim of enhancing the habitat for increased waterfowl production, especially Canada geese and dabbling ducks. Nesting success is a factor limiting production in many areas. Nesting success can be increased measurably with the inclusion of small islands in the reservoir. The purpose of this Technical Note is to provide guidelines for island placement and development during new reservoir construction and during maintenance of existing reservoirs.