
Erosion Control & Drainage
Erosion Control & Drainage Solutions, Southern Oregon
Drainage systems, swales, slope stabilization, and erosion protection that keep soil and structures in place through Southern Oregon's wet winters, and every season after.
Overview
Stop erosion at the source, before it takes your soil with it
Southern Oregon's combination of steep terrain, clay-heavy soils, and heavy winter rainfall creates some of the most challenging erosion conditions in the Pacific Northwest. When water has nowhere controlled to go, it finds its own path, cutting gullies, undercutting slopes, and carrying topsoil away season after season.
Pacific Earthworks designs and installs erosion control and drainage systems that address the root cause. That means intercepting and routing runoff before it builds momentum, armoring slopes where water must pass, and reshaping grades so water drains away from structures and vulnerable soil. French drains, swales, riprap, culverts, and retaining walls are tools, the real work is understanding your specific site and putting the right combination in the right places.
Based in Williams and working across the Rogue Valley, we understand the seasonal patterns that stress your land. Whether you're dealing with an active washout, persistent standing water, or trying to protect a site during construction, Pacific Earthworks handles the scope from assessment through finished grade.

What We Offer
Erosion control & drainage services
- Drainage systems & french drains, perforated pipe, drain rock, and filter fabric routed to safe outlets
- Swales & berms, shaped channels and ridges that intercept and redirect surface runoff
- Slope stabilization, grading, compaction, and structural measures to stop active movement
- Riprap & rock armoring, durable stone protection for slopes, channels, and drainage outlets
- Silt fencing & sediment control, construction-phase BMPs to meet permit requirements
- Culverts & water diversion, crossing and routing water under roads and driveways safely
- Revegetation grading, finish grading shaped to hold seed and support long-term ground cover
- Retaining walls for erosion-prone slopes, structural solutions where grading alone isn't enough

Why Pacific Earthworks
Why property owners trust us with their slopes
Root-Cause Thinking
We diagnose where water is coming from and why soil is moving, then build a system that addresses that, not just the visible damage.
Licensed & Code-Aware
CCB #239526. We handle construction-phase sediment control requirements and build to Oregon standards from day one.
Rogue Valley Terrain
Steep slopes, heavy clay, and hard winters are our normal. We design erosion control for conditions that actually exist here.
Where We Work
Erosion control across the Rogue Valley
Based in Williams and serving Southern Oregon. We handle erosion control and drainage in:
- Grants Pass
- Williams
- Medford
- Ashland
- Jacksonville
- Central Point
- Cave Junction
- Eagle Point
Questions, Answered
Erosion Control & Drainage FAQs
What causes erosion problems on a property?
Erosion is driven by water moving too fast across or through unprotected soil. Common causes on Southern Oregon properties include steep slopes without ground cover, disturbed soil from grading or construction, inadequate drainage that concentrates runoff, and the heavy winter rains that saturate clay-heavy Rogue Valley soils. Once soil starts moving, the problem compounds quickly, small rills become gullies, and gullies undermine foundations, roads, and slopes.
How much does erosion control cost in Southern Oregon?
Cost depends on the scope of the problem, the slope gradient, the approach required (drainage swales, riprap, retaining walls, revegetation grading, or a combination), site access, and the size of the area involved. Smaller drainage corrections cost less than a full slope stabilization project. The best way to get a number that fits your situation is a free on-site quote, call (541) 512-5280.
What's the best way to stop a slope from washing out?
There's rarely one answer, effective slope stabilization usually combines several approaches. Interceptor swales or berms catch and divert water before it gains speed. Riprap and rock armoring protect the slope face from direct scour. Retaining walls hold back soil where the slope is actively failing. Revegetation grading then stabilizes the surface long term. Pacific Earthworks evaluates your slope and recommends the combination that addresses the root cause rather than just the symptoms.
Do I need erosion control measures during construction?
Yes. Oregon DEQ and many local jurisdictions require best management practices (BMPs) on disturbed sites, silt fencing, straw wattles, temporary sediment controls, and stabilized construction entrances are common requirements. Pacific Earthworks handles erosion and sediment control as part of site work so your project stays compliant through the grading and construction phase.
Can you fix standing water and runoff issues?
Yes. Standing water and uncontrolled runoff are drainage problems at their core. French drains, swales, culverts, and regrading redirect water to where it belongs before it erodes soil, floods low spots, or undermines structures. We handle the full scope, from diagnosing where the water is coming from to installing the drainage system that fixes it.
How do drainage and erosion control work together?
Drainage controls where water goes; erosion control protects soil from water's energy. The two go hand in hand, a well-designed drainage system slows and routes runoff so it never builds up enough force to erode. When drainage is handled properly, erosion is largely prevented. When it's neglected, even armored slopes and silt fences can't keep up. Pacific Earthworks designs drainage and erosion protection as an integrated system.
Related Services
Often paired with erosion control
Stop the Washout
Get a free erosion control quote
Tell us about your slope, drainage problem, or site. We'll assess what's happening and give you honest options and a free estimate.
(541) 512-5280