Grading & Drainage
05 / 05- Site Water Flow Assessment
- Grade Correction Plan
- Regrade & Compaction
- Swale & Berm Installation
- Drainage Feature Tie-In
Erosion Control & Grading
Erosion Control &
Grading
Water that runs where you didn't plan for it destroys yards, foundations, and hardscape. We grade properties correctly and install erosion control solutions that solve the problem at the source.
Portland · Beaverton · SW Washington ·
OR LCB# 9957 · WA GCC# OLGUICL807RZ · Free Estimates
The Craft
Grade it right. Once.
Most erosion problems are grading problems. A yard that pitches toward the foundation, a slope without ground cover or armoring, a swale that dead-ends, these are planning failures that compound every time it rains. The Portland Metro gets over 40 inches a year. That's a lot of water finding every path you didn't close off. We assess how water moves across your property and correct the grade before any erosion control is specified.
From there we install the right solution for the site, riprap armoring, bioengineered slope stabilization, silt fencing during construction, or revegetation with deep-rooted natives. The goal isn't just stopping erosion that's happening. It's engineering the site so it doesn't happen in the first place.
Grade Assessment · Site-Specific · Water Flow Mapped
Riprap · Bioengineering · Native Revegetation
Our erosion control process covers
5core dimensions
- §01
Site Water Flow Assessment
We map how water moves across your property during heavy rain, identifying erosion channels, pooling zones, and vulnerable slopes before any work begins.
- §02
Grade Correction
Regrading sloped areas, correcting negative drainage toward structures, and establishing proper slope-to-drainage-feature relationships across the site.
- §03
Erosion Armoring
Riprap, boulders, and channel lining for high-velocity water paths. Sized for flow rate and slope, not just piled for appearance.
- §04
Bioengineered Stabilization
Deep-rooted native plantings, erosion control blankets, and live staking for slopes where armoring alone isn't the right solution.
- §05
Revegetation & Long-Term Cover
Seeding, native ground cover installation, and mulch application to establish long-term vegetative cover over disturbed or vulnerable slopes.
Two approaches. One stable site.
Grade correction that solves the source, not the symptom.
Erosion lives where the grade fails. We map every flow path, fix the slope, and verify the water moves where it's supposed to before anything else gets installed.
Map existing drainage patterns and erosion channels
Regrade to establish correct slope-to-drainage relationships
Correct negative drainage toward structures
Install swales, berms, or drainage features as needed
Verify water flow path under rain simulation before revegetation
Erosion control built to hold through Oregon winters.
Once the grade is right, the armoring and revegetation hold. Every method is sized to the slope, the soil, and the flow it has to take through the wet months.
Select armoring method, riprap, boulder, or bioengineering
Install erosion control blanket on disturbed slopes
Place riprap or channel lining at high-velocity flow points
Install native ground cover and deep-rooted stabilizing plants
Seed and mulch disturbed areas for long-term vegetative cover
Erosion is a grading problem. Solve the grade.
You can install all the erosion control blanket and riprap you want, if the grade is wrong, water will keep finding new paths. We start with the grade because that's where the problem lives. Once water is moving where it's supposed to move, the armoring and revegetation hold. Otherwise you're just buying time until the next heavy rain event creates a new channel somewhere you didn't expect.
- Grading & Earthwork
- Riprap Armoring
- Bioengineered Slopes
- Native Revegetation
- Erosion Blanket
- Silt Fencing
- Swales & Berms
- Slope Stabilization
“Fix the grade. Everything else holds.”
What goes into a finished OCL erosion solution.
Erosion Control
05 / 05- Armoring Method Selection
- Riprap or Channel Lining Install
- Erosion Control Blanket
- Native Ground Cover Install
- Seed, Mulch & Establishment