Bog garden spot

I have a spot in my yard that stays wet all the time... what could it be?

Its not the septic tank.  I have no leaks from a water line because my bill is low. There is a spot that just stays wet. What could it be and how could i "dry it up"?

Could it be a natural spring? and if so what should i do? )r could it be something completely different?

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  It could be that the water table is high in your yard and your yard is a bit low there. I suppose it could be a spring. I would build a bog garden and take advantage of it. Here's how:
• http://www.pondlady.com/Articles/bog_gar…