What is the difference between crushed stone and Natural Pea Gravel?

Crushed stone has angular faces and comes in minus and clean grades. A minus grade keeps its fines and compacts; a clean grade has them washed out and drains. Natural Pea Gravel is rounded and washed, so it will not compact and should be edged where it can wander. It suits play areas, dog runs and planting beds rather than a drive.

Should I order material by the ton or by the yard?

Either works, and the choice is yours at checkout. Tons are the usual way Washington yards sell crushed rock, sand and gravel. Yards are common for soil, fill and mulch. Each product page has a calculator, so you can size the load before you order instead of working it out yourself.

Which stone is best for drainage in Douglas County?

Start with drain rock, also called 7/8 clean. It is washed with no fines, so it keeps its voids where a perched water table sits on till. For trench backfill and pipe surround, 3/4" Crushed Stone does the same job at a larger size.

Douglas County 5/8 Minus and Gravel Delivery, WA

Washington Rock Supply handles gravel, stone and aggregate delivery in Douglas County, WA. Across the Columbia Basin, Yakima Valley and the channeled scablands, windblown loess sits over Columbia River basalt, and where the Ice Age floods ran, that silt was stripped off and the basalt left bare.

That ground decides what goes under a drive or a pad. In most of the county you want 5/8 minus as the top course: crushed rock with the fines left in, so it packs hard and sheds water instead of soaking it up.

Ground Conditions Across Douglas County

Start with the working season, because it sets the timing for a delivery. Eastern Washington's wet weather season for erosion control runs October 1 through June 30.

Once snow falls or the ground freezes, placing and compacting base material stops being practical.

Water is the other half of the picture, across the Columbia Basin, Yakima Valley and the channeled scablands. Parts of the basin take only seven to nine inches of rain a year, so the ground is dry and loose.

When a thunderstorm or a rapid thaw does arrive, the silt sheds water rather than absorbing it.

Where flood gravel sits at the surface, water disappears straight down instead. Wind off bare, dry silt moves soil, and short violent runoff cuts rills and gullies in loess when a cloudburst lands on ground with no cover.

Irrigation runoff moves soil too.

Winters here are cold and dry and summers hot and dry. The ground freezes properly, unlike west of the Cascades, and frost heave in an unbound base is something to design for.

Materials Delivered in Douglas County

Materials split into minus and clean. Minus means the crusher fines stay in, so the rock compacts and holds.

Clean or washed means the fines came out, so it drains.

5/8 minus is the one to know first.

Contractors and quarries shorten those to CSBC and CSTC and order them as 1 1/4 minus and 5/8 minus.

That is how material is described in Washington, not a certificate a yard holds. The rest of the section list covers ballast, gravel base, gravel backfills and riprap.

Choosing the Right Material

Douglas County shares its ground with Grant County, both sitting on the Columbia Basin, Yakima Valley and the channeled scablands. Windblown loess over basalt, flood gravel bars in the coulees, deep silt under irrigation elsewhere.

The ground is the same, so the base and drainage choices are the same.

Okanogan County is different. It spans more than one zone, taking in the Okanogan Highlands and the northeast corner as well as the Cascade Range and the east-slope valleys.

Higher ground and a different mix underfoot change what a base course has to do.

Delivery Across Douglas County

Washington Rock Supply delivers bulk aggregate across Douglas County, including East Wenatchee, Bridgeport, Waterville, Rock Island, Mansfield, Orondo and Palisades. You order online, choose a quantity by the ton or by the yard, and pick a delivery date at checkout.

Each product page has a calculator if you want to size a load before you order. A dump truck then tips the material in one pile on site.

Order Bulk Gravel and Stone in Douglas County

Washington Rock Supply delivers bulk gravel, stone, sand, topsoil and mulch across Douglas County, from East Wenatchee and Rock Island to Bridgeport, Waterville, Mansfield, Orondo and Palisades. Order online, choose your quantity by the ton or yard, and pick a delivery date at checkout.

Bulk Aggregate Delivery Across Douglas County, WA