Wet area of lawn help


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Old 03-23-19, 04:58 PM
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Wet area of lawn help

The back part 5-6 ft of the lawn where it meets the neighbors propertyproper to hold some water for a few days and almost always stays damp . Both back yards drain towards this area and then are graded slightly from east to west across the back. There is a sewer drain about 100 ft from the corner of our lot at the far back corner of the next lot (currently has not been purchased/built on) to the West (slightly downhill from our yard) and I think our lots are designed to flow that way.

​​​​​​Landscaper says our grade is fine. It is all hard clay around here .

So here are the options we are considering .Looking for feedback on which might work or other suggestions.

here is the area in question

Option 1) lie down stones over the top of the wet area coming out 5-6 ft from the fence creating kind of a dry creek bed . Across the whole back of the property. Something like pictured below but maybe without the edgers on the fence side. Would this look ok? Would this help keep mosquitos down as any standing water would be under the rocks? Do we have to dig down and remove the turf or just kill what grass there is an put down the stone?
example:

Option 2: run a French drain across the wet area . I'm assuming this would have to run all the way across our property and the neighboring property and dump into the sewer drain?

Option 3: have 1 or 2 deep holes dug and filled with stone then covered with top soil. Essentially dry wells. Could also use the nds flo well? How big do the holes need to be for this option? For diy what kind of equipment would one use to dig that deep?

Which option is best? Is there a better idea? Thank you
 
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Old 03-24-19, 04:42 AM
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1. If mosquitoes can get to the water, even if they have to crawl around rocks, they will still lay eggs. It generally keeps a rather small stone to keep them away from water. Otherwise the rocks just offer shade and protection to their young.

2. You can not discharge surface water into a sanitary sewer. You will need the appropriate permits and approval before considering tying into a storm water drain system.

3. What is a nds? The French drains might help some by increasing the surface area for the water to soak into the ground. You are still limited by how much water the ground will accept. When the ground is saturated a pit of stones is just going to hold the water and probably eventually puddle on the surface.

The easiest option is probably to bring in dirt and raise the low area so water doesn't puddle there. Best would be able to direct that surface water to the storm sewer.
 
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Old 03-24-19, 05:10 AM
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Thanks. By sewer, I meant storm sewer.

Area is already headed east to west towards the storm sewer.

2 different landscaping companies said we can't just bring in more fill dirt as that would just past the water on the neighbor behind us which isn't allowed

Nds flo well https://www.homedepot.com/p/NDS-NDS-24-in-Plastic-Storm-Water-Leaching-System-FWAS24/100377387




 
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Old 03-24-19, 05:27 AM
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It looks like the low spot is a couple of feet to the right (inside) of your yard. Is the neighbors yard behind you contributing to the problem or is it all water from your yard?

I personally would fill that area in so it's level to the bottom of the fence, at least it would eliminate the low spot and minimize water flowing to the low spot.

If you install a french drain it has to flow somewhere, what is on either side of the back yard?
 
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Old 03-24-19, 05:48 AM
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The pic is standing on the back and east side of yard looking west . So the fence on the left of the pic is the back fence .The fence furtherest away where you see daylight under the fence is the side closest to the storm drain. It is intentionally low there to allow water to flow towards the drain in a drainage easement.

That lot is currently empty. We could terminate the drain at that property towards the storm drain or potentially run out all the way to the drain
 
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Old 03-24-19, 08:48 AM
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What about solid PVC attached with some catch basins across the wet area? Then have a pop up emitter at far end of property outside fence draining towards the storm drain?
 
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Old 03-24-19, 04:21 PM
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I try to avoid pop-up drain things. Dirt and sediment gets washed into the drain pipe but there isn't enough water pressure to force it up and out so it collects in the pipe. So, if you do try it allow some way to clean out the pipe in the future or plan on cutting the pipe open in 5-10 years.
 
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Old 03-24-19, 04:29 PM
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The other option I know of works be French drain through the back yard that runs around the house and empties onto the road.

Any other ideas?
 
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Old 03-24-19, 11:22 PM
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French drain through the back yard that runs around the house and empties onto the road.
Well, that wont work since the back is so low, water needs to flow down.

It is intentionally low there to allow water to flow towards the drain in a drainage easement.
You already stated that their is a drain, you really only have one option to fill in the low spot and help the water flow toward the corner by grading or a french drain.
 
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Old 03-25-19, 06:13 AM
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You should check with the local AHJ before doing anything as sometimes a designated waterway cannot be touched without prior approval.
 
 

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