Buying or building on a wooded lot in Cumming will often seem straight forward in your head. There will be trees and privacy; perhaps even a little creek. However, then the first big heavy rainstorm comes along and this idyllic idea is washed away down your muddy driveway, or you are left with a rain-clogged backyard that seems to never dry out fully.
Drainage on wooded lots like this is difficult because the land is such that it retains water that you do not see at first glance. Leaves, for instance, are hiding ruts, pine straw is disguising little channels on the ground, and thick understory can be covering up a channel that will turn into a small river every time there is about 20 minutes of heavy rain during a storm.
These are the drainage issues that get missed during a quick viewing of a property like this or in pretty drone photos of the lot. So let’s talk about the hidden clues, the ones that tell you where the water will flow and what is likely to happen once you clear and grade the property, or start putting in a new driveway and utilities.
Why wooded lots in Cumming drain differently from open lots
When it comes to drainage on these kinds of properties trees change everything; a small forest will intercept rainfall, the roots of the trees hold water in the surrounding soil, the leaves that have fallen on the ground slow water runoff, and the ground can become soaked in more water than a compacted lawn.
The moment you start clearing this kind of land, removing stumps or cutting new access routes, you change how fast the water moves around on the site and where it concentrates, not least because when heavy equipment is brought onto the land it will compact the soil down further and make it less absorbent. Then, what used to be an area where water flowed widely and gently can become a channel in which the water pools. What used to soak up the water can instead start sending it sliding across compacted clay.
Cumming and the broader North Georgia area also have red clay and mixed soils, as well as lots of rocks in the ground, which creates unwanted surprises when it comes to the issue of drainage.
Clue No. 1: The green area that doesn’t match the rest of the woods
On a wooded lot, you will often find a strip of vegetation that looks a little different from the rest of the property, like the vegetation or trees there are a brighter green. Maybe the plants are thicker or the trees in that area are a slightly different species from elsewhere. Perhaps their trunks look darker and more mossy.
That is usually a sign that this part of the property is getting more water. There is consistently more moisture moving through the same drainage channel here year after year.
If you are walking around the property a lot in late summer and everywhere else looks dry except for this one narrow area where the trees are lush and green, pay attention; that is often where the drainage path is or a place where subsurface water is frequently collecting close to the surface.
What this means for a future house foundation or driveway
The problem really arises if that green line crosses where you want to lay down a driveway or if you are planning on putting down the foundation of a house on top of that muddy mess. If it crosses your planned building area, it might not stop you from building there altogether, but it will mean you need to change your grading plan. For instance, you might need to reshape the area or redirect the flow of water there. Alternatively you should consider installing drainage features so that the water does not get pressed against the foundation area.
Clue No. 2: Exposed roots on the downhill side of the trees
If you walk downhill on your property while looking at the base of the trees and you see roots exposed on one side, especially on the downhill side of the lot, that is often a sign that the soil is moving. Soil erosion like this is problematic. It might only be a few inches here and there, yet it tells a person that water has been taking small little chunks out of the slope. Over enough time these will add up to form little grooves or channels.
In such a scenario, you might also notice a few little pedestals where a rock or root is left slightly visible above the soil around it, another minor sign of soil erosion; water has carried the finer soil away and left the heavier, more solid structures behind.
Why this matters before you start clearing your land
Clearing your land tends to speed up whatever is already happening there. For instance, if the slope is already shedding soil, then disturbing the ground further can increase the level of runoff and start sending sediment down to the bottom of the lot or into a neighbor’s property.
This is where good grading work is less about making the land look smooth and is actually more about controlling the flow of water during and after the work. When it is done right, you can stabilize the site through work like this and consciously manage where the water flows.
Clue No. 3: Leaves that have bundled together as though someone raked them
Cases where leaves and pine straw are lined up in little arcs or bundles are another sign. This is caused by water runoff, where water flows across the surface of an area and sorts debris like leaves into bundles or piles. It shifts the leaves and then deposits them together where the velocity of the water drops off. These are patterns you can read on the landscape if you slow down and look for them.
After a period of heavy rain, these lines can be very clear, whereas in dry weather they are still there, yet they will have faded from prominence a bit. If you see multiple parallel streaks of leaves and other debris leading downhill, you are looking at the property naturally draining down certain routes. These might be shallow and seasonal, yet they indicate something important about the drainage on the property.
Clue No. 4: Mystery flat spots that are soft underfoot
A lot of wooded properties can have a little bench or flat area that seems like a perfect spot to build on. That is until you step onto it and notice that the soil feels wet and soft underfoot, even when it has not rained in a while.
That softness is usually caused by one of two things: it is either organic buildup in the soil that is retaining moisture, or it is a place where water is collecting or moving slowly through the soil. On properties in Cumming you can also run into perched water situations where water is sitting above a tighter layer of clay.
A flat area that stays wet like this is not automatically unusable for building purposes, but it does require a plan to optimize it for building on. For example, it might need some undercutting work to be carried out. Conversely, it might need a bit of surface drainage shaped into the area so that water does not linger there in future. Whatever the solution, you at least need to be aware of the difficulties created by this before you start planning to place a home or a septic field on the wet spot.
I mention the septic tank because drainage clues are septic clues as well. If a part of the lot is staying wet, then that can limit where the drainage field from a tank can be located. This is a scenario where the land is telling you what it will allow moisture-wise and that trying to fight it will potentially become expensive.
Clue No. 5: Old cut channels that look like they belong to nothing
In the woods you can often find a shallow ditch or channel that seems like it has no purpose. It does not look like a creek, nor does it appear like the remnants of an old road or ditch. It is just a strange line or channel.
Sometimes this is an old driveway or a previous attempt at drainage. Regardless of what it is, if it is partially filled in, it is possible that it is still functioning during storms as a channel, because water will reuse features like this as the best path available to flow through. If you are planning on undertaking land clearance and grading, then these seemingly innocuous features have to be taken into consideration.
Clue No. 6: The way the property meets the road
People typically tend to focus on the interior of a property and forget about where it meets the road and the ditch and culvert. In reality this is critical as it is the exit point for water off the property when it rains and also an entry point for water coming from elsewhere.
If the road is higher than the property, water runoff can come onto your land, while if the lot is higher up then you are still responsible for ensuring that water is not being dumped down onto the road in a way that creates a hazard. This means that when you put in a driveway you need to consider drainage as part of the project.
In Cumming, you will see lots of properties where the best driveway location is frequently not the prettiest one. Instead it has been situated so as to ensure a longer drive with a gentler slope in order to manage water flow more precisely.
A quick test you should perform after it rains
If you can, visit the property where work is being carried out right after heavy rain. Look around at where the water is moving near the road edge. If there is lots of water flowing near the ditch, or the culvert is clogged, there might be a problem. Similarly, if sediment is being washed out of the property then you need to form a plan for how to deal with this.
Clue No. 7: Rocks at the surface
You will see areas where rock are showing up near the surface of the property, or where the soil is thin and you can physically feel stones underfoot pushing up to the surface. This kind of shallow bedrock can mean one of two things. On the positive side, rocks can move water around quickly in the gaps between the stones, yet on the other hand large amounts of stones can create hard layers that force water to run off across the surface of the soil. It depends on the rocks and the soil profile.
From a grading and excavation standpoint, rocks change everything. They impact on how you might go about flattening the area for construction or how you will cut a trench for utilities. Indeed, how you manage the water runoff in such circumstances will also determine whether you will be able to shape the ground the way you planned on paper.
Don’t clear your land without a plan for managing water
Most drainage issues on wooded land are not natural problems. They are actually created when the land is disturbed. Land clearance removes the natural cover that slowed the rain’s impact; bringing heavy equipment on site leads to the soil being compacted down; and grooves that are cut during construction become channels through which future water flows. Then, if the lot is left exposed between stages in the construction work, a couple of storms can carve up the paths in ways that are hard to fix cleanly later on.
That is why a good contractor will treat land clearance work and grading as a drainage job as well, like one connected project. In practical terms, this means thinking through where the water will go during the work, not just after the final grading. It also requires the contractor to keep things compliant with any local requirements and to use general best practice to avoid creating issues for neighboring property owners.
Grading contractors on wooded Cumming lots: GPH Grading
A good contractor will read a property like a map. They will see the high and low points where water will drain to and from, as well as the natural swales and the changes in soil type. They will also gauge existing erosion and how the location of the nearby road will impact on the work.
At GPH Grading, a company that was founded in 2016, this is the core job for Graeme, the company’s founder, and the rest of the team. Graeme has been around equipment of this king for his whole life, literally driving his first Bobcat when he was five years old. GPH Grading operates across the Greater Atlanta area and up through North Georgia, handling land clearing jobs, excavations, land grading, landscaping, and forestry mulching.
On forested land that is being prepared for construction work you usually need more than one type of work undertaken, although drainage work is the thread that runs through all of it.
GPH are licensed and insured, and they work according to local, state, and federal regulations and zoning ordinances. This is critical, as drainage issues can become compliance problems if the water runoff is being redirected in a harmful way onto another person’s property or onto the road. For instance, poor land clearance work can lead to severe drainage issues which in turn may require extensive forestry mulching in order to restore the land’s natural state and prevent any further problems.
A few real world scenarios concerning drainage
When the nicest looking building spot unfortunately is a drainage bowl
What frequently happens with work like this is that a nice flat area tucked into the trees is preferred as the building site. It is protected from the road and has a perfect view, but alas it is nice and flat because it is also a collection point for water. The lot is draining gently towards it from multiple sides.
If you build on this spot without reshaping the wider area then you are building in the path of water. It may be subtle, but the first time you have an extended downpour of rain, you will certainly notice the water sitting around in a pool where you are planning to build your driveway or patio.
When the driveway becomes the creek
Alternatively, on sloped and wooded lots the driveway often cuts through places where water flows. If the drive is too steep or lacks proper drainage it becomes the lowest point that water constantly flows to and from. As such, it starts washing water away and carving channels into nearby soil. Worse still, it can begin dumping sediment out onto the road.
Fixing this problem after the driveway is built is always much more expensive than predicting it beforehand and avoiding it altogether. In most scenarios you will end up having to rebuild the base and adding drainage that should have been designed from the start.
The plan you need before you spend actual money
If you take one thing from this, let it be this: clues about potential drainage problems are rarely obvious. Instead they involve subtle things like changes in how plants are behaving, the patterns of leaves on the ground, erosion marks in the soil and simply seeing spots of ground that always seem wet.
To determine this, walk around the property, once in dry weather and once after some rainfall. Look around for disturbances at the edge of the road or around the base of trees, as well as for those peculiar collections of leaves that nobody actually gathered and which are telling you where water is going on the property.
Then, when you are ready to tackle the problem, do it with someone who will treat the drainage issue correctly. GPH Grading offers this kind of practical work, on time and on budget, with a reputation for honesty and transparency.
FAQs (Frequently Asked Questions)
Why do wooded lots in the Cumming area drain differently than open lots?
Wooded land has a forest canopy that intercepts rainfall and roots that hold soil in place. Leaf litter here also slows runoff, allowing the ground to absorb more water than a compacted lawn. However, when you start clearing this land and bring heavy equipment onto the site, this natural system is disturbed. It changes how fast water can move and where it concentrates on the land, often turning a place where water gently flowed into a defined channel that causes excess runoff.
What does the “green line” on a wooded lot indicate about drainage?
The “green line” is a strip of vegetation that looks brighter and greener, often with thicker plants, which usually indicates that more moisture is consistently reaching this location. This often suggests that there is an old drainage path here where water is close to the surface. It’s an important clue that you might need to think again when you are considering laying down a driveway or a home foundation in that particular spot, as these areas can become muddy or cause water to press against the proposed foundations if not properly managed.
How can exposed roots on the downhill side of trees indicate drainage issues?
Exposed roots on the downhill side of trees are often evidence that the soil is moving here due to erosion. Even small amounts of movement can cause roots to become visible as water takes small chunks out of the slope over time. This subtle erosion can lead to channels forming, which may then worsen after the land is cleared.
What do leaves arranged in arcs or streaks tell you about the drainage in a wooded area?
Leaves that become naturally lined up in arcs or streaks, like they have been lightly raked, are a sign of surface water runoff that moves debris like leaves into little piles or collections as the water flows downhill. This indicates the natural drainage routes of the water, which might be shallow or seasonal. Identifying these patterns helps with planning grading work to control the future flow of water effectively.
What are wet spots underfoot on wooded land indicative of and why does it matter?
Sometimes you will identify spots on a wooded site where the ground feels wet or soggy in a particular patch. These are areas with organic buildup that is holding the moisture or places where water has collected or is moving slowly through the soil.
How do drainage clues like these impact on where to install a septic system on wooded properties in Cumming?
Drainage clues like these are critical when determining where a septic system should be placed, as they indicate where water tends to collect or move more slowly. Wet parts of the lot like this are often not suitable locations for drainage fields from septic tanks, since poor drainage here can cause system failure. Understanding these natural drainage patterns ensures that septic tanks and systems are installed in the most appropriate location.
