Lake Worth is located on the West Fork of the Trinity River. It is entirely inside the city limits of Fort Worth, Texas, United States. Lake Worth was built in 1914 as a reservoir and for recreation. The property is owned by the City of Fort Worth, while the Tarrant Regional Water District controls the reservoir's water rights. The lake has a moderate fluctuation with …Lake Worth is located on the West Fork of the Trinity River. It is entirely inside the city limits of Fort Worth, Texas, United States. Lake Worth was built in 1914 as a reservoir and for recreation. The property is owned by the City of Fort Worth, while the Tarrant Regional Water District controls the reservoir's water rights. The lake has a moderate fluctuation with stained clarity. Submerged vegetation is sparse. There are shallow flats covered with cattails and other emergent species.