Nine signs your yard needs regrading

Almost all of this is observable without tools. The best time to look is the morning after a heavy rain, or during a spring thaw, because that is when the ground shows you what it does with water rather than what it looks like when dry.

1. Water is still standing a day later

This is the clearest single indicator. Ground with adequate fall sheds surface water within hours. Ground that is flat, dished or falling the wrong way holds it, and in clay-rich soil it will sit for days because there is nowhere for it to go downward either.

Note where it collects and roughly how big the area is. Both matter when someone quotes the work.

2. The puddle is against the house, not out in the yard

This is a different and more urgent problem than a low spot in the middle of a lawn. It means the perimeter grade is flat or reversed, and the water sitting there is soaking into backfill directly beside your foundation wall.

3. There is a trench following the foundation line

A narrow depression tracing the outline of the house is settled backfill. It is normal on newer homes as the disturbed soil consolidates, and it is a problem because it forms a channel that catches roof runoff and directs it down the wall. See foundation grading for how this specific case gets corrected.

4. One area of lawn is always the worst

Moss, thin patches, yellowing turf or a consistently spongy area in the same place, year after year, is a low spot showing itself through the grass. Turf is a reasonable indicator of where water sits even when the ground is dry at the moment you look.

5. Spring melt runs the wrong way

Watch during a thaw. Snowmelt over frozen ground cannot soak in at all, so it follows the surface exactly. If it heads toward the house, the grade in that direction is negative, and that is the day of the year it matters most.

6. Downspouts empty onto ground that does not drain

Follow each downspout to where it discharges and look at what happens next. A downspout landing on a flat or reversed area is delivering a concentrated volume of water to exactly the wrong place. Sometimes an extension is the whole fix.

7. Soil has washed out or eroded in a channel

Visible erosion tells you water is moving fast in a defined path. That is not necessarily bad, but if the path ends somewhere that holds water, or crosses toward the house, the grade is sending it somewhere it should not go.

8. Water crosses a property line

Water arriving from a neighbouring lot, or leaving yours onto theirs, is a lot-level issue rather than a yard-level one. It also has a regulatory dimension in Calgary. See lot grading.

9. Something was built and everything changed

A new shed, patio, deck, fence, raised bed or driveway is one of the most common triggers. These structures sit across drainage paths, and a working grade only needs one interruption to stop working. If the problem began after a project, that project is the first place to look.