Why is Lake LBJ a constant level lake?

Related questions

1. Is Lake Travis full?
2. Is Lake Buchanan constant level?
3. What is a constant level lake?
4. What is the highest Lake Travis has been?
5. What does constant level lake mean?
6. Can you swim in Lake Buchanan?
7. Is Lake Travis a natural lake?
8. How long is Lake LBJ?
9. Why does Texas have a Colorado River?
10. Is Lake Buchanan open?

Tags

1. #granite
2. #storage
3. #level
4. #originally
5. #therefore
6. #constant
7. #fluctuate
8. #shoals
9. #there
10. #comes
11. #water
12. #additional
13. #flood
14. #especially
15. #during
16. #called