Thanks for the input.

Even though no water was on top, when I ran over the topsoil in the area with the tractor and dirt scoop, they tried to take the short cut to China. That is why I started with the trackhoe.

I will dig out a bunch more of the topsoil and either take my chances with it holding water or try to pack it with clay.

I have lots of clay in the general area so it would be easy to pack if it won't fill up over the spring level. Therefore, that isn't really a concern. My main concern is that it would become a relatively slow & constant leak when the lake gets near full.

I'm somewhat inclined to dig out the topsoil and take my chances. What are the upsides and downsides to springs?

Thanks!

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