One of the largest rock walls we’ve ever built is in Ronald. It runs more than 500 feet along a steep switchback gravel driveway, about 4 feet tall, holding the cut slope below the home. Less than a month after we finished it, it got the hardest test it could have had.
The 500-foot rockery wall
The owners had dealt with flooding every year. Between September and November 2025 we built the rockery along the cut slope, graded the driveway and dug a deeper drainage ditch to carry the fall and winter rain. The wall holds the hill. The ditch and the grade give the water somewhere to go besides across the drive.
Then came record rainfall, with flash-flood waterfalls pouring over the hillside. The wall held. You can see the whole job, including drone photos looking down to Lake Cle Elum, on the Ronald rockery wall project page.
Why rockery walls suit Ronald’s slopes
Ronald sits on the road up to Lake Cle Elum and Salmon la Sac, and a lot of the properties here are steep, with long driveways cut into the hillside. Every cut leaves a bank that wants to slide, and every slope sends water downhill in spring.
A natural boulder rockery handles both. The rock is set to lean back into the slope, and drainage behind the wall keeps water from building up behind it. We plan for frost and water from the start, because freeze-thaw winters will find any weak spot. A rockery can be structural, decorative or both, and it looks like it belongs on a mountain lot. We build block walls too, where they make more sense.
They brought the vision we had for our property to life. Professional, courteous, on-time, AND on budget. These guys are the real deal.
Driveways and drainage
On a long mountain driveway, water follows the gravel. Grading the drive so it sheds water, ditching alongside it, and swales or a dry creek bed to carry runoff where it should go are often what finally fix a property that floods every spring. Our own operators handle the digging, grading and drainage as part of the project.
More than walls
Rockery can also turn a hillside into usable ground. On a new-home site elsewhere in the upper county, we cleared and graded the lot and built rockery walls to frame a level yard before the house went up.
Around the house, native plantings like pines, vine maples and drought-tolerant groundcovers fill in disturbed ground and hold up to dry summers. With wildfire season in mind, lighter brush clearing near the house is worth doing too.
Plan it over the winter
Landscaping in Ronald runs on the same short build season as the rest of the upper county. Brandon will walk your property in winter, even with snow on the ground, and plans made over the winter get the earliest spring start.
Got a slope, a cut bank or a driveway that floods? Book a free design consult or call 509-260-3659.
