Anna, TX • Collin County • Slayter Creek Watershed
French Drains in Anna, TX
Yard drainage, French drains and creekside outlet work for Anna homeowners. Two creek corridors, a lot of very new construction and a lot of acreage on septic. Each one needs a different answer.
Why Anna Drains Differently to the Rest of Collin County
Anna sits about 10 miles north of Melissa on US-75, on the same Blackland Prairie belt, and the soil under most of the city is the same Houston Black clay: permeability around 0.10 inches per hour, shrink-swell of 25 to 40 percent by volume. That much Anna shares with everywhere else east of US-75 in this county. What makes Anna different is geography and pace.
The geography is two creeks. Slayter Creek runs through the middle of the city, past the park that carries its name and the treatment plant on the same drainage. Throckmorton Creek runs to the east, feeding the East Fork of the Trinity River. Most Collin County suburbs are laid out across a fairly featureless clay plain with the nearest channel some distance away. Anna is not. A meaningful number of Anna lots sit within a few hundred feet of a defined channel, which gives them a real outlet and a real constraint at the same time. A drain outletting near creek level works beautifully for eleven months of the year and runs backwards during the one storm that matters.
The pace is the other half. Anna's population changed by roughly 86 percent between 2019 and 2024, faster even than Melissa. Whole subdivisions have gone from pasture to occupied inside three years. That produces a very particular drainage profile: engineered street drainage designed to current standards, sitting on top of heavily compacted subgrade, with thin topsoil, immature landscaping holding nothing back, and utility trench lines that will settle for another few years yet. Anna's own subdivision regulations require drainage to be designed on a fully developed watershed basis, so the public system is sized for the build-out that is still coming. The gap is not in the street. It is in the last twenty feet between the house and the property line.
And then there is everything east of SH-5, where lot sizes jump, the curb disappears and on-site septic is common. Those properties need swales and grading far more than they need pipe. We treat them as a different job, because they are.
Drainage by Anna Property Type
Creekside lots along Slayter Creek and Throckmorton Creek
Anna is one of the few cities in this part of Collin County with two named creek corridors running through the built-up area. Slayter Creek cuts through the middle of town past Slayter Creek Park, and Throckmorton Creek runs east toward the East Fork of the Trinity River. Lots backing onto either corridor have an outlet most Collin County homeowners would envy, and a problem most do not have: when the creek runs high during a spring cell, a gravity drain outletting near creek level runs backwards. Outlet elevation relative to the creek's high-water mark is the first thing we check on any lot within a couple of hundred feet of the channel, before we talk about run length or price.
New-build subdivisions west of US-75
Anna Crossing, West Crossing, Camden Parc, Sweetwater Crossing and the newer phases around them went in fast. Anna's population changed by roughly 86 percent between 2019 and 2024, which is a steeper curve than Melissa's, and the practical consequence is that a large share of homes here are still young enough to be inside or just outside the builder's warranty window. On these lots the problem is almost never the engineered street drainage, which is designed to current standards. It is the last few feet: compacted subgrade under thin topsoil, utility trench lines settling through the first three to five years, and side yards between closely spaced homes with almost no fall.
The older grid along SH-5 and downtown Anna
Original Anna, along SH-5 either side of the FM 455 intersection, has smaller lots, older homes and storm infrastructure that predates the current design standards. Pier-and-beam and early slab foundations are both in the mix here, and they want different things: a pier-and-beam house needs the crawl space to breathe and drain, a slab wants a stable moisture band at the perimeter. Outlets in this part of town are often shallower and further away than they look, and a curb outlet that works two streets over may not be reachable on grade from your back yard.
Acreage and country lots east of SH-5
East Fork Estates, Summer Lake Country Estates, Rancho Del Norte, Tara Farms and the larger lots out toward the county line have no curb to outlet into and, in many cases, an on-site septic or aerobic treatment system. That changes the job substantially. You cannot trench through a drainfield or a spray field, saturated Blackland clay will drown one, and TCEQ setback rules govern how close drainage work can get. On these properties the right answer is usually a graded swale and berm doing most of the work, with a French drain only where water has to cross under a driveway or move past a structure, and a natural low point or dry well as the discharge.
FM 455 corridor and the commercial edge
FM 455 is Anna's main east-west artery and it has widened along with the city. Homes and small commercial properties fronting or backing onto widened right-of-way frequently inherit a drainage problem that did not exist before the road work: additional impervious area shedding to a new location, or a roadside ditch regraded to a different line. These need documenting before they are fixed, because responsibility is not always the property owner's.
Rear-lot drainage easements
Anna's subdivision regulations require drainage to be designed on a fully developed watershed basis, meaning the system is sized assuming everything upstream eventually gets built out. Part of how that design gets delivered on the ground is the recorded rear-lot easement, a shallow swale along the back property line carrying flow from several houses. It works until a fence, a shed, a raised bed or a load of fill goes in across it. Restoring the swale is frequently the entire fix, and it is a lot cheaper than a drain.
What We Check on an Anna Site Walk
Every Anna job starts the same way, with a free walk and no obligation attached. We would rather come out within a day or two of rain, because wet ground shows the flow path, the ponding footprint and the true low point in a way a dry inspection never will. If the yard has already dried we run a hose test off the downspouts to recreate it.
We shoot elevations from the problem area to every candidate outlet, which in Anna might be a street curb, a rear drainage easement, a roadside ditch on FM 455, or a creek bank. For anything near Slayter Creek or Throckmorton Creek we look at the channel itself: bank height, evidence of the high-water line, whether the rear of the lot is inside a mapped floodplain. We check downspout discharge points, because on a good number of Anna jobs the whole problem is 1,200 gallons of roof water per inch of rain being dumped at a foundation corner, and piping that away properly costs a few hundred dollars rather than a few thousand.
On acreage we locate the septic system and its setbacks before we plan a single trench line. On new-build lots we look for the settled utility trench line, which is usually visible as a shallow depression running from the street to the meter and is very often the actual flow path. And we check the recorded easements on your plat, because a fair number of Anna drainage complaints turn out to be a blocked rear swale that somebody fenced across.
Then you get a written scope with run length, trench depth, pipe type, gravel and fabric spec, outlet location and restoration detail, at a fixed price. If we think the answer is regrading, downspout extensions or a conversation with your builder rather than a drain, we will tell you that instead.
What Drainage Work Costs in Anna TX
Anna pricing tracks the wider North Texas market, which for a residential French drain means roughly $10 to $35 per linear foot for a shallow exterior run and $30 to $90 per linear foot for a deep perimeter system. The two things that push an Anna quote around inside those bands are outlet distance and lot type. A subdivision lot with a curb 30 feet away is straightforward. A creekside lot needs the outlet designed and armored. An acreage lot east of SH-5 is a different job altogether and frequently costs less per area covered, because the work is earthmoving rather than pipe.
| Work Type | Typical Range | Common Anna Scenario |
|---|---|---|
| Single-trench French drain, 40 to 60 ft | $2,500 to $4,000 | One side of a new-build lot, curb outlet |
| Two-side perimeter system | $4,000 to $7,000 | Side yard plus rear corner on a tight lot |
| Full perimeter system | $7,000 to $12,000 | Foundation protection on an older SH-5 area home |
| Catch basin plus underground pipe | $2,000 to $5,000 | Ponding low spot mid-yard, per basin plus the run |
| Creekside outlet with armouring | Add $600 to $1,800 | Slayter Creek or Throckmorton Creek bank discharge |
| Swale and berm regrading, acreage | Quoted per site | Country lots east of SH-5 with no curb and a septic field |
| Sump pump system | $1,800 to $4,500 | Lot sitting below the street with no gravity fall |
Nobody in this market publishes these numbers, which we have never understood. You are entitled to know roughly what you are walking into before you give a stranger your address. The number on your written estimate comes after the site walk, but it will land inside these bands unless something unusual turns up, and if it is going to fall outside them we will say so on the day rather than in an email a week later.
Timing a Drainage Job in Anna
Collin County averages around 41 inches of rain a year, and it is heavily weighted toward spring. May alone brings close to 6 inches, usually in short, intense cells rather than steady rain. That pattern drives the whole calendar for drainage work in Anna.
March through May is when problems reveal themselves and when we get most of our calls. It is a good time to have us walk the property, because the water is doing something visible, and a poor time to trench. Blackland clay in its saturated, swollen state is heavy, slow and messy to excavate, it smears rather than cuts, and the restoration afterwards is harder on your lawn. We will still do the work if a slab is at risk, but nobody enjoys it.
June and July are workable. August through November is the window we actually recommend. Contracted, dry Blackland clay excavates almost like soft rock and holds a clean trench wall, so the job moves faster, costs less in labor and leaves far less mess behind. Installing in fall also means the system gets a full winter to settle and then faces its first real test the following March, with us still fresh on the details if anything needs adjusting.
Winter is fine for the work itself. The main constraint is sod and seed: turf laid in December will not knit in until spring, so the trench line stays visible longer. If appearance matters to you, either bring the job forward into fall or accept a couple of months of a visible scar.
Drainage Services We Offer in Anna TX
Perforated pipe in clean angular gravel, wrapped in geotextile rated for clay, for groundwater and surface runoff.
Catch basins, channel drains and surface regrading for yards that pond after every storm.
Perimeter drainage to hold a stable moisture band around slabs sitting on expansive Blackland clay.
For Anna lots below street level or too far from a creek bank for gravity discharge to work.
French Drains in Anna TX: Frequently Asked Questions
What causes most drainage problems in Anna TX?
My lot backs onto Slayter Creek. Can I just drain into it?
How much does a French drain cost in Anna TX?
Do I need a permit for drainage work in Anna TX?
I am on septic. Can I still install a French drain?
How far is Anna from your base in Melissa?
My house is new. Should I be calling the builder instead?
Can my neighbor drain their water onto my Anna property?
What is the fastest way to get a drainage estimate in Anna TX?
Free on-site estimate. Serving Anna, Melissa, Van Alstyne and eastern Collin County.