The Waterline · Issue #01 · July 2026

Surviving peak evaporation season

A 5-minute playbook for North Texas yards, from Danny at Waterline. You're reading the first issue — thanks for being here.

This week in your yard

Move your watering start time to before 6 a.m. — this week, not eventually. A July afternoon in DFW evaporates roughly a third of what your sprinklers throw before it ever reaches roots. Same water bill, a third less lawn. Pre-dawn watering also lets leaves dry by mid-morning, which is your best free fungicide.

While you're in the controller, check you're running cycle-and-soak: our black clay absorbs water slower than spray heads apply it, so anything past about 8 minutes of spray (15 for rotors) starts running down the gutter. Split long runtimes into 2–3 shorter cycles an hour apart.

→ Get your exact zone-by-zone minutes with the new Runtime Calculator — free, 30 seconds, built for DFW clay.

One thing worth learning: the tuna-can test

You can't fix what you haven't measured. Set 4–6 empty tuna cans (or any straight-sided cup) around one zone and run it for 15 minutes. Measure the depth in each can with a ruler.

Average depth × 4 = your zone's true inches per hour.
Big differences between cans (one at ¼", one at ¾") = coverage problem — a tilted, clogged, or mis-matched head. That's the brown-patch culprit, not "not enough water."

Pro tip: If one can near a head reads high and the far cans read low, the nozzle's worn or the pressure's off. A $6 nozzle swap beats adding 10 minutes to the whole zone.

From a real yard: Southlake, 76092

Four years of standing water along a side yard after every rain — sod dying, foundation soil eroding. The fix wasn't complicated, it was just built right: a French drain with Schedule 40 perforated PVC in a woven sock, washed river rock, 1 inch of fall per 10 feet, tied into the downspouts and daylighted at the curb. Three-day install, fully sodded back. First storm after: dry by morning.

Before: the diagnostic dig — water standing in the black clay beside the side yard, days after a rain — Before — the diagnostic dig. Water standing in the clay like this, after every storm, for four years.

After: the new French drain daylighted at the curb, captured stormwater exiting to the gutter — After — first storm post-install, the drain daylighting at the curb. Yard dry by morning.

→ How drainage actually works in Texas black clay (new guide)

Quick hits

Most Mid-Cities systems are set to water too long, too few days. Twice weekly, cycle-and-soak, pre-dawn wins.
Smart controller rebates are still live in Irving, Coppell, Bedford & Flower Mound ($100–$250). City-by-city guide →
Seeing a brown circle around one head? That's a coverage or nozzle issue — don't raise the whole zone's minutes.

Need a hand? Free estimate →

The Waterline is written by Danny Mastroni, Licensed Irrigator TX #LI0025754, Waterline Drain & Sprinkler LLC — Mid-Cities, DFW. (469) 824-5524 · hello@waterlinedfw.com

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