Finding drainage problems when they’re smaller and easier to fix can save you thousands of dollars and plenty of headaches down the line. You don’t have to be a geophysicist to know that puddles in the basement or a lake on the front lawn are signs of drainage problems. But many drainage problems aren’t so obvious. Here’s how the pros read some of the more subtle signs of bad drainage, and why you’ll save big bucks if you tackle these problems now instead of later. You don’t have to be a geophysicist to know that puddles in the basement or a lake on…