Miami-Dade County was sued Tuesday for allegedly violating a voter-approved referendum that prohibits commercial use and development on environmentally sensitive county-owned land.

Bat Conservation International, Tropical Audubon Society and Miami-Dade citizen Jose Barros filed the lawsuit after the county leased the land to developer Miami Wilds LLC, which aims to build a 67-acre development complete with a water park, hotel and retail stores. The city and the developer entered into a contract June 23.