 According to the St. Johns River Water Management District and the Geographic Names Information System, the Wekiva River originates from Wekiwa Springs, and about from the spring, Wekiva is joined by the Rock Springs Run.The Florida Department of Environmental Protection defines the portion of the river from Wekiwa Springs to the confluence with Rock Springs Run as the Wekiwa Springs Run.The Wekiva River then starts from the confluence of the two spring runs and joins the St. Johns River after .