The most alligator infested lake in Texas is the Lake Tawakoni which is in northeast Texas and is known for having a large population of alligators.
It's estimated that at least 400 alligators inhabit the Lake Tawakoni.
And other lakes with notable alligator populations are Lake Lewisville and Caddo Lake.
The cleanest River in Texas is the Devils River.
The Devils River in Texas is the cleanest rive river and is known for it's exceptionally clear, spring fed water and also minimal human impact, which makes it one of the wildest and most pristine rivers in the state of Texas.
The Devils River in Texas is fed entirely by natural springs, which contributes to the Devils Rivers consistent clarity and cool temperature.
The Devils River has also remained largely unaltered, with no dams or any significant changes to it's natural flow, which helps to maintain it's pristine condition.
And a large portion of the Devils River and it's surrounding area are also designated as the Devils River State Natural Area, which helps to preserve it's wild character and water quality.
And the river's clear water and also rugged landscape make the Devils River a visually stunning destination.
The Devils River which is located in southwestern Texas, is also part of the Rio Grande drainage basin, has limited areas of whitewater along its length.
The Devils River, begins in northwest Sutton County, at 30°19′40″N 100°56′31″W, where six watercourses come together, Dry Devils River, Granger Draw, House Draw, Jackson, Flat Rock Draw, and Rough Canyon.