Scheduling Drainage Work Around Weather

Rain started Sunday night and quit Tuesday afternoon. Three jobs were on the board: a 92-foot French drain in clay, a channel drain across a concrete apron, and a downspout tie-in running 40 feet of solid pipe to daylight.

One of those can run Wednesday morning. The other two can't. Nobody has told the two homeowners yet, and that's the real problem — not the rain.

A wet week isn't an emergency. In most drainage markets it's a predictable share of the season. You can build a board that absorbs it instead of one you rebuild every Monday at 6 a.m.

Count the days you actually lose, not the days it rains

Most contractors carry a vague number in their head: we lose a lot of days in spring. Vague numbers can't be scheduled around. Go get the real one.

Pull last season's daily precipitation for the weather station nearest your service area. NOAA's Climate Data Online has it free, and most weather sites will show a station's daily history going back years. What you want is a simple list: which days had measurable rain, and how much fell.

Then set your washout threshold. This is the part that varies most by market, and it's mostly soil:

• Sandy loam with decent grade — half an inch or more takes the rest of that day, and you're back on it the next morning.
• Loam over a clay subsoil — a quarter to half an inch costs the balance of the day plus a slow, muddy start the next.
• Heavy clay — a quarter inch can cost the day it falls and most of the day after. Deep trench with tight access, sometimes two days after.

Now the arithmetic. Say your season runs March through November: call it 190 working days after holidays and the weeks you take off. You go through last year's station data and find 34 days with a quarter inch or more, 24 of which landed Monday to Friday.

You're in clay, so each one costs a full day plus roughly half the next. That's 24 × 1.5 = 36 lost crew-days. Then 36 ÷ 190 = 19% of your season. Roughly one working day in five.

Swap your own numbers in. If your ground drains and your count comes out at 12 lost days over 210, you're at 6% and most of what follows is optional for you. If you land near 19%, this is the difference between a board that holds and a board that detonates every time the radar lights up.

One more thing worth tracking while you're at it: how many of those lost days you actually paid a crew for. That single number changes what a float day is worth to you.

Sort the work by what water does to it

Drainage work isn't uniformly weather-sensitive. Some of it genuinely can't run wet. Some of it runs better wet. Most contractors treat the whole board as one category and lose days they didn't have to lose.

What actually breaks in the wet, in order of how expensive the mistake is: subgrade compaction (you cannot compact saturated soil, and it will settle), machine traffic across turf (ruts you'll be repairing for free), trench wall stability in anything sandy, finished surfaces like sod and seed, and concrete.

The pattern is worth stating plainly: small-footprint, hand-dug, hard-surface and diagnostic work survives a wet week. Machine excavation in turf, and anything that needs compaction or a finished surface, does not.

Running wet also changes what the job costs you, which is a pricing question rather than a scheduling one. Seasonal pricing for drainage work does that math — mud time, lost days, restoration risk — so you're not absorbing October out of your own margin.

Commit hard for ten days and soft for thirty

If you lose one working day in five, a ten-day block contains about two washouts. A board with ten days of work in ten days has no room for them, so every rain event pushes every job behind it and you spend the following Monday on the phone apologizing.

Book eight of every ten working days. The other two are float. That isn't idle time — it's the time that absorbs the weather you already know is coming.

Then run three tiers of commitment:

1. Hard commit, 5 to 10 working days out. A specific date the homeowner has in their calendar. Materials ordered, locates called, crew told. You break this only for weather, and you call before they do.
2. Soft commit, two to six weeks out. Week-of language only: we'll be starting the week of the 12th, and I'll confirm the day on the Thursday before. No specific dates, ever, in this tier.
3. Queue, beyond six weeks. Month-of language. Mid-October. No promises, and say so out loud so it isn't a surprise later.

Most of the anger contractors get over moved start dates comes from committing at tier one accuracy for tier three work. You gave someone a Tuesday five weeks out because it felt confident on the phone. Five weeks and three rain events later, that Tuesday was never real.

Then there's sequencing. Don't stack three dry-only jobs back to back in April. Alternate: clay trench, then a channel drain cut-out, then the dry well. When the trench slides two days, the hard-surface job slides into its place instead of leaving the crew standing.

And keep one rain-proof job sold and waiting. A short downspout tie-in, a cleanout retrofit, an outfall rebuild — something priced, signed, and startable with one phone call. That's your washout day's best outcome.

A washout day costs you either way, so decide which way

Put a number on the day. Take your crew size times your burdened hourly cost — wage plus payroll tax, comp, and the truck if you carry it there. That lands somewhere in the range of $24 to $38 an hour per man in most markets, and yours is whatever your own books say.

Four men at $30 burdened, eight hours: 4 × 30 × 8 = $960. That's the day.

You have three ways to spend it:

• Send them home unpaid. Costs $0 today. Costs you good people over a season, especially if you're at 19% washouts and they've noticed.
• Send them home paid. Costs $960 and buys nothing back. Sometimes correct — after a long stretch, or when the shop list is genuinely empty.
• Run a shop day. Costs the same $960 and buys back real work. If the crew knocks out $400 of prep and maintenance you'd otherwise pay for on a billable day, you've recovered about 40% of it.

A shop day only works if the list exists before the rain does. Write it down now and add to it all season:

• Fabricate cleanout assemblies and pop-up emitter tails in batches.
• Pre-cut pipe and fittings for the next two jobs on the board.
• Count and restock the trailer — couplers, fabric, glue, blades, marking paint.
• Equipment PM: greasing, blade changes, tracks, trencher chain, pump strainers.
• Photograph and file finished jobs properly, so a warranty call two years out has a before picture attached to it.
• Two hours of yard work: stone bins, pipe racks, spoil pile.

And the most valuable washout activity of all isn't shop work. It's you, in a truck, looking at wet yards. Water is showing you exactly where it goes, once, and only while it's raining. That's the visit nobody schedules, and reading a yard in the rain covers what to look for and how to sell the return trip.

Half-days deserve their own rule. If the forecast has it clearing by noon, don't cancel — start at 11 with a staging list. Materials dropped, locates verified, access matting down, spoil tarps laid. You'll get a full production day tomorrow instead of burning the first two hours setting up.

The call goes out the night before, and you make it

Here's what most homeowners are actually upset about when a start date moves: not the delay. The silence. They took a day off work, they moved the dog, they told the neighbor about the trucks, and at 8:40 a.m. nobody has shown up or called.

So the rule is simple. You call the evening before, not the morning of. Between 5 and 7 p.m. is the window where a human answers.

Four things have to be in that call:

1. The date has moved, said in the first sentence. No preamble about the weather.
2. The reason, framed as their yard rather than your inconvenience. Digging that trench tomorrow means my machine ruts your lawn and I'm compacting mud into the trench walls — you'd be paying me to build a drain that silts up early.
3. A new specific date, or a specific time when you'll give them one. Never sometime next week.
4. What still happens on schedule. Materials delivery, the locate marks, the permit. Something moving is better than everything stopped.

Mrs. Alvarez, it's Dan. We're not starting tomorrow — we got 1.8 inches overnight and your back yard is clay. If I put the machine on it tomorrow I'll rut the lawn and I'll be packing mud into the trench instead of clean stone, and that drain won't last like it should. The stone and pipe still land Thursday. I'm holding Friday and Monday for you, and I'll call you Thursday at five with whichever one it is.

The reason that call works is that it's the second time they've heard it. The first time was in the proposal. A short weather paragraph in your scope — start dates are weather-dependent, we don't excavate saturated ground, we call the evening before any change — turns the phone call from bad news into a process the customer already agreed to. The drainage proposal that gets signed the same week covers where that language belongs and what else page one has to carry.

One thing not to do: don't offer a discount to smooth over a weather delay. You'll be doing it four more times this season, and you'll have taught your whole customer list that rain is worth money.

Where the schedule lives, and what software won't do for you

A magnetic whiteboard with ten day-columns and a card per job handles one or two crews better than most apps, on one condition: it's visible from where you stand at 6 a.m., and it's the only copy. Two crews and up, or a second person making promises to customers, and you need a shared calendar everyone can see from a phone. Past that, dispatch and routing tools exist and some contractors get real value out of them.

Be clear about what we do here. ScapesHQ does not do scheduling, dispatch, or routing — it isn't built, and nothing in the product will put a crew on a map or a job on a day. What it holds is the other half: the client, the property, the project, the proposal you sent, and a permanent activity timeline of what was sent and signed and when. So when a start date moves for the third time in April, the record of what you actually promised is somewhere other than your text messages.

The schedule itself is a discipline problem before it's a tooling problem. Count your washout days. Book eight of ten. Sort the work by what water does to it. Keep one rain-proof job in your pocket and a shop list on the wall. Call the night before.

Do that for one wet season and the week that used to cost you three days and two angry customers costs you one day and a phone call.

FAQ

How far ahead should I schedule drainage jobs?

Give specific dates only 5 to 10 working days out. Two to six weeks out, use week-of language and promise to confirm the day a few days before. Beyond six weeks, give the month only. Most complaints about moved start dates come from promising a specific Tuesday five weeks in advance, when three rain events were always going to sit between you and it.

Can you install a French drain in the rain?

Not well, and in clay not at all. Wet trenching smears the walls, machine traffic ruts the lawn you'll then repair for free, and mud gets worked into the stone, which shortens the life of the drain. Hard-surface work like a channel drain cut-out, plus cleanout and outfall repairs, are the jobs that genuinely run in the wet.

How long should I wait to dig after rain?

It depends on soil more than rainfall. Sandy loam is usually workable the next morning after half an inch. Loam over clay costs the rest of that day and a slow start the next. Heavy clay can cost a full day plus most of the following one from a quarter inch. Time your own ground for a season and you'll have a threshold you can schedule against.

Should I pay the crew on a rain day?

Work out the number first: crew size times burdened hourly cost times eight hours. Four men at $30 burdened is $960. If you're paying it anyway, spend it on a shop day with a written list — batch fabrication, pre-cutting pipe, equipment PM, restocking — and you'll recover a real share of it in production time you don't have to buy on a billable day later.

What do I tell a customer whose start date just moved?

Call the evening before, not the morning of. Lead with the fact that the date has moved, give the reason in terms of their yard quality rather than your convenience, give a new specific date or a specific time you'll provide one, and name whatever is still happening on schedule. Don't discount the job to smooth it over.

The short version

Pull last season's daily rainfall for the nearest station, set a washout threshold based on your soil, and work out what share of your working days you actually lose — for many clay markets it's close to one day in five. Then book only eight of every ten working days, sort your job list into rain-proof, day-after and dry-only, keep one short rain-proof job sold and ready to start on a phone call, and write the shop-day list before you need it. When a date has to move, you call the evening before with a specific new date and a reason framed around their yard.

Book a walkthrough and we'll look at where your last three moved start dates are recorded, if they're recorded anywhere at all.