On Mon, 23 Apr 2007 02:33:37 GMT, mstrspy wrote:

That's what I was thinking, sand, but I had no sand on hand this
weekend and needed to fill that hole with something.


A few years back, I found another similar hole but smaller. Did the
same thing, filled it with bolders and I haven' seen any errosion.

I'm not sure why that other hole was there. Does a typical septic
system have two chambers spread appart?

On 22 Apr 2007 19:21:13 -0700, Joe wrote:


mstrspy wrote:
I recently discovered a small hole in my back yard filled with water,

snip

This past weekend I filled the hole with rocks and bolders.

Really, really bad idea. Before going further, get a load of sand
(that's SAND!) and start filling it. Bank run gravel may settle
eventually, but sand will compact between the rocks many times faster.
Keep it a foot below grade until next summer, then do the topsoil and
grass seed routine.

HTH

Joe

What you did was fine. Excellent in fact. Just put 6 inches of
topsoil and grass sod over your 6 inch deep depression for now and
then add sand or topsoil as it continues to settle over the next few
years.

You know our land is continually moving and corrections have to be
made even in those places where there was no hole. Telephone poles
and fences show leaning posts after just a very few years and animals
such as moles, gophers, ground hogs and armadillos change our
landscape. My neighbors buy a couple of cubic yards of sandy loam
to level their places again.