Drainage & Grading · Marshall, NC

Drainage & Grading in Marshall, NC.

Marshall is steep rock with a thin skin of soil. The survey maps 92% of the ground at a 15% slope or steeper and bedrock within 40 inches under 87% of it.

1,642 ft

Marshall elevation

Wet soil nearby

2.24

Median lot (ac)

24hr

Callback

Prefer to talk? (828) 702-7125

How do you handle drainage on Marshall, NC's steep, rocky ground?

On the surface, mostly. Within a mile and a half of Marshall the USDA soil survey maps 92% of the ground at a 15% slope or steeper and bedrock within 40 inches under 87% of all the ground, about 15 inches down across nearly half the area. Thin soil fills with water quickly and sheds the rest. So drainage on this ground is about steering fast water: swales cut across the slope, culverts under drives, stone where the flow would cut. Wet soil is scarce, about 2% of the ground.

Fifteen inches of soil above the French Broad

Marshall sits at 1,642 feet on the French Broad River, with Walnut Creek, Bailey Branch, Casey Bow Branch, Hayes Run and Frisby Branch falling to it. A Walnut, Oteen and Mars Hill complex with bedrock about 15 inches down covers 34% of the area on 30 to 50 percent slopes and 15% on 15 to 30 percent. About 69% of the ground is at a 30% slope or steeper, and only 4% is under an 8% slope. The few flat strips by the river are French loam and Reddies sandy loam, rated occasionally flooded.

French drain installation in Marshall

There is no room here for a deep trench, and no need for one. Water moves along the top of the rock, a foot or so down. A French drain in Marshall is a shallow curtain drain set on that rock, across the slope above whatever needs to stay dry: a house, a driveway, the back of a retaining wall. We bed the pipe in washed stone, wrap it in fabric and bring it to an outlet protected with rock. Installed French drains in Western NC run $25 to $98 per linear foot.

Driveway and hillside runoff

The median lot is 2.24 acres, and many homes sit at the end of a long, steep drive. Water running down a driveway is the main drainage problem on ground like this. We crown the drive or tilt it into the hill, cut a ditch on the uphill side, and set culverts or turnouts so the water leaves in several places instead of one. The NOAA station in Marshall averages 42 inches of precipitation a year, low for the mountains. Steep rock makes the most of every inch.

See the full service on our drainage & grading page, and the wider Marshall service area.

Marshall groundNC115

USDA soil survey, USGS and NOAA figures for the ground within 1.5 miles of Marshall.

Wet soil share

42 in

Rain per year

2.24

Median lot (ac)

Marshall ground

The soils mapped around Marshall.

What the USDA soil survey maps inside a circle of 1.5 miles around Marshall: 24 soil map units over about 4,500 acres. These are the largest, with the slope and water figures behind the work on lots around Marshall.

USDA-NRCS soil map units within 1.5 miles of Marshall, NC, by share of the mapped area — source: USDA-NRCS Web Soil Survey
Soil map unit	Share of ground	Slope	Drainage class	On the map	What it means
Walnut-Oteen-Mars hill complex, 30 to 50 percent slopes, moderately eroded	34%	40%	Well drained	bedrock about 15 in down	Wall / slope work
Walnut-Oteen-Mars hill complex, 15 to 30 percent slopes, moderately eroded	15%	23%	Well drained	bedrock about 15 in down	Wall / slope work
Walnut-Oteen-Rock outcrop complex, 50 to 95 percent slopes	15%	63%	Well drained	rock at the surface	Wall / slope work
Rock outcrop-Oteen complex, 30 to 95 percent slopes, very bouldery	11%	63%	n/a	rock at the surface	Wall / slope work
Mars hill-Walnut complex, 30 to 50 percent slopes, stony	6%	40%	Well drained	bedrock about 27 in down	Wall / slope work
Evard-Cowee complex, 30 to 50 percent slopes, moderately eroded	3%	40%	Well drained	bedrock about 27 in down	Wall / slope work

Across the whole circle: 92% of the ground is mapped at a 15% slope or steeper, 2% as moderately well to very poorly drained soil, and 87% with bedrock within about 40 inches. The town point sits in the USGS watershed unit "Little Pine Creek-French Broad River". Nearest NOAA rainfall normal: 42 inches a year (Marshall, 1.1 miles off). Pulled 2026-11-09 from USDA-NRCS Soil Data Access, the USGS hydrography datasets and NOAA 1991–2020 normals. A soil map is not a site test: we confirm your Marshall lot on the free site walk.

What it costs

What drainage and grading cost in Marshall, NC

These are typical Western North Carolina market ranges, not a Maidenhair Landscaping quote. North Carolina construction runs about 12% below the national average, but our mountain terrain — 15–40%+ slopes, weathered bedrock and saprolite, clay, and tight access — pushes most jobs toward the high end of every range. A flat infill lot sits low; a steep escarpment lot sits at or above the top. Your exact price comes from a free on-site estimate.

Drainage & French drain — typical Western NC ranges (published market data, 2026-06-24)
Item	Typical WNC range	Notes
French drain (installed)	$25–$98/linear foot	NC ~2% below national
Yard / surface drain	$10–$50/linear foot	shallow exterior runs
Deep / curtain / foundation drain	$50–$70/linear foot	depth drives cost

What drives it: depth, length, soil drainage class (clay-over-rock vs sandy), daylighting vs sump, gravel + fabric spec, and rock/saprolite in the trench.

Source: published WNC/NC market ranges via costonce.com and fixr.com . Exact pricing on your lot comes from a free on-site estimate — call (828) 702-7125.

How it works

How we do it in Marshall.

Read the soil

We check the drainage class on your Marshall lot and find the layer where water perches.

Set fall & outlet

We confirm the line can daylight to a stable outlet lower than the water, and lay out a steady grade.

Trench & build

Fabric-lined trench, washed #57 stone, perforated pipe at the wet layer, stone over, fabric capped.

Prove it drains

We check the fall and confirm the line carries water off — then restore the surface clean.

FAQ

Drainage & Grading in Marshall: common questions

Can you trench for a drain if there is rock a foot down?

Yes. On a slope the pipe belongs on top of the rock, because that is where the water travels. We dig to the rock, shape a fall along it and build the drain there. If the rock has to be cut to keep the pipe falling, that adds time, and we say so before we start.

My driveway washes out every big rain. Is that a drainage job or a grading job?

Both, and we do both. The washout happens because water stays on the drive. We regrade the surface so it sheds to a ditch, add culverts or turnouts where the flow gathers, and put down stone that locks together. A drive washes when it carries water, so the fix is getting the water off it.

Do I need a permit for a French drain in Marshall?

For a typical single-lot drain — a yard, curtain, or footing drain — almost never, because it disturbs far less than the state trigger. Under the NC Sedimentation Pollution Control Act (NC GS 113A-57(4) (Sedimentation Pollution Control Act of 1973)), an Erosion & Sedimentation Control plan is only required when land-disturbing activity uncovers more than one acre, at $119 per acre. The median lot near Marshall is about 2.24 acres and a trench disturbs a narrow strip, so it stays well under the line. If the drain outlets through a state road ditch or a new culvert, that's a separate NCDOT encroachment permit — we confirm jurisdiction for your address first.

Are you local to Marshall, and are you insured?

We're Maidenhair Landscaping, a Hendersonville-based, owner-run crew — general liability insured — covering Marshall and 6 WNC counties. We're a newer outfit doing real work the right way; we'd rather earn Marshall on the quality of the wall and the honesty of the quote than on a stock photo and a fake review. Free on-site estimate, 24hr callback.

Nearby

Drainage & Grading near Marshall.

We work Marshall and the towns around it. Same service, local detail for each:

Drainage & Grading in Walnut · 5 mi Drainage & Grading in Mars Hill · 8 mi Drainage & Grading in Weaverville · 10 mi Drainage & Grading in Hot Springs · 10 mi Drainage & Grading in Barnardsville · 13 mi Drainage & Grading in Asheville · 16 mi

Also in Marshall

Other services we do in Marshall.

Retaining Walls Hardscaping & Patios Driveway Grading Tree & Storm Cleanup Stump Grinding Mulch & Cleanups

Free estimate

Need drainage & grading in Marshall?

Tell us what you're dealing with — we'll walk the lot, read the soil and grade, and put a real number in writing, free.

Prefer to talk? (828) 702-7125