(70 ILCS 410/11)
(from Ch. 96 1/2, par. 7111)
Every district shall consider the preservation of natural
conditions and protection of flora and fauna as part of its principal
purpose and to that end shall set aside a substantial portion of its land
to remain in an essentially undisturbed condition.
A district is empowered to dedicate areas as nature preserves as provided
in the "Illinois Natural Areas Preservation Act", as now or hereafter amended,
and to cooperate with the Illinois Nature
Preserves Commission in matters relating to the purposes of that Act.
(Source: P.A. 82-445.)