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Old 02-16-2010, 10:12 AM   #1
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Drainage Question

We live in a rural subdivision and are the 2nd lowest lot in elevation that drains an area of about 450 acres through sand with clay beginning 2' to 4' below the surface. During a lot of heavy rain, our septic lines drain clean water through the sand, into the septic tank. [We have visualized this phenomenon twice now.] And the surface water collects and eventually makes its way into the septic system, too. Our property, oblong in shape, and slopes from the back to the front. We have thought about digging a 'dry' creek bed running the length of the property to hopefully have the surface water drain away into the bar ditch. We have also considered bringing in fill dirt and building a little terrace system and planting grass, also running the length of the property to drain the water away. Both would hopefully redirect the surface water away from the drain fields. We dug a little bit of a ditch and the water moves away quickly. Is this a DIYer or do we need to consult a professional? If so, what kind of expert is needed? PS We've been informed that the slope is not steep enough to make a French drain feasible.


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Old 02-16-2010, 11:51 AM   #2
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Been through this so many times! You, and your neighbors if they will cooperate, should get a civil engineer out to look over what happened to the grading for the whole development. The developer probably just carved something out in a hurry and now you are all stuck trying to fix the situation. If you do it individually, property by property, you could just compound problems for each other. Obviously, those of you on lowest ground are going to have the worst drainage problems. Anybody above you getting creative is just going to make your situation worse. Sharing the cost of a civil engineer will be cheaper than suing each other when things get tense.

At the very least, spend a little on a consult for you own situation. You might see if there is a survey for what was supposed to happen as far a grading and drainage on file. There may be codes and ordinances pertaining to what kind of drainage you can use and even EPA regs a civil engineer will know about.


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Old 02-17-2010, 07:58 AM   #3
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We have thought about digging a 'dry' creek bed running the length of the property to hopefully have the surface water drain away into the bar ditch.
Ayuh,... I agree with sdsester about lookin' at the Bigger picture,...
Digging a swale down your property line is the simplest easiest way out...
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