Artificial Waterfalls

In the Prairies and Lakes area of Texas the landscape is flat and houses seem like outcrops. The landscape is quite boring so what do builders do, they create artificial landscaping. If you want a hill they will go and dig up some dirt from somewhere and pile it up to create one. If you want a waterfall they can do that too. I recently saw one such feature at a premium residential neighborhood where they have created an artificial river and a waterfall, here are some pictures: