Drainage and Grading in Spokane Valley, WA

Drainage and Grading in Spokane Valley, WA — What to Expect

Most hardscape and wall failures we get called to are drainage failures wearing a different hat. Water arriving somewhere it should not is the root cause, and fixing the visible symptom without redirecting the water buys you a season.

The usual toolkit is regrading to establish fall away from structures, a French drain to intercept subsurface water, catch basins where surface water collects, and solid pipe carrying it all to a legal outfall.

Where the water goes matters as much as collecting it. Discharging onto a neighbouring property, or into a system not designed to take it, simply relocates the problem. We establish the outfall before designing the collection.

What Is Included

Regrading to establish fall away from structures
French drains and subsurface interception
Catch basins and surface collection
Solid pipe to a legal outfall
Downspout extension and tie-in

Our Process for Drainage and Grading

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Step 1: Site Water Survey
We walk the property and establish where water arrives, where it collects and where it currently goes, ideally during or just after rain when the evidence is visible.
2
Step 2: Outfall Identification
Before designing collection we establish where the water can legitimately be discharged, because a system with nowhere to go simply relocates the problem.
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Step 3: Regrading and Surface Shaping
Grades are corrected to move surface water away from structures. Often this alone solves the complaint without any pipe going in the ground.
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Step 4: Subsurface Drainage Installation
French drains, catch basins and solid carrier pipe are installed where surface work is not sufficient, with fall checked along the whole run.
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Step 5: Connection, Testing and Restoration
The system is connected to the outfall, water-tested to confirm it actually runs, and the surface is restored.

Drainage and Grading We Offer in Spokane Valley

French Drains and Subsurface Interception

Perforated pipe in a stone-filled trench intercepting subsurface water before it reaches a wall, patio or foundation.

Yard Regrading and Swales

Reshaping surface contours to move water away from structures and toward a controlled discharge, often the cheapest effective fix.

Catch Basins and Surface Collection

Inlets at low points collecting standing water and piping it to a controlled outfall.

Downspout Extension and Tie-In

Getting roof water well away from foundations and walls, which is the single most common and most overlooked drainage fault we find.

Why We Are the Hardscaping Contractor to Call in Spokane Valley, WA

Drainage designed in, not added on
Nearly every failed wall in this region failed because water had nowhere to go. Drainage stone, filter fabric and outlets are part of the design, never an upsell.
We tell you when you need an engineer
Walls over four feet, surcharged walls and tiered walls generally need stamped drawings. We say so up front rather than building something that fails inspection.
Built for freeze-thaw
Inland Northwest winters move soil hard. Base depth, compaction and backfill are specified for frost, not copied from a warm-climate detail.
Written scope before work starts
Wall height, block type, drainage detail, geogrid layout and backfill material, all in writing. You can put it out to competitive bid.
Slope and erosion work, not just walls
Sometimes the right answer is regrading, terracing or planting rather than a taller wall. We will tell you when that is cheaper.
Clean sites, real restoration
Excavation spoil hauled away, access routes protected, and the lawn put back. Wall work is heavy and messy — the cleanup is part of the job.

Drainage and Grading FAQs

Why is water pooling in my yard?

Usually because the grade falls toward that point and nothing carries it away, or because a compacted or clay layer stops it soaking in. The fix depends on which, and that is what the survey establishes.

Where can drainage water be discharged?

Somewhere it can leave without creating a problem for you or a neighbour. Daylighting downslope is simplest. Tying into storm drainage may require permission. Discharging onto adjacent property is not an option.

Do French drains stop working over time?

They do if the stone silts up, which is what filter fabric is there to prevent. Systems built without proper fabric, or with landscape fabric substituted for it, commonly clog within a few years.

Can drainage fix a wet basement?

It frequently helps a great deal, because most basement water arrives from surface water and roof discharge near the foundation. Interior water problems with other causes need investigating rather than assuming exterior drainage will solve them.

How much difference does a downspout extension make?

More than almost anything else for the money. A single downspout discharging beside a foundation or above a retaining wall delivers an enormous volume of water to exactly the worst place, and extending it is inexpensive.