Bulk Material Delivery in Mariposa, CA

California Rock Supply handles gravel and aggregate delivery in Mariposa, CA, from one truckload to a full site order. Class 2 base is the standard here, and it goes under drives, parking pads and the compacted layer beneath pavers and slabs. On ground that drains fast in one spot and holds water in the next, what sits on top matters as much as the base itself.

Materials for Mariposa Projects

Water is the driver on most jobs in this county. Winter rain sheets off shallow soil and bedrock on the slopes, and it needs somewhere to go. Washed stone gives it that path. Below, materials run coarsest to finest, with what each size does.

Drainage stone, from coarsest to finest

• RipRap, also called rock slope protection, armors creek banks, culvert outlets and cut slopes against winter runoff. Caltrans specifies placed slope rock as rock slope protection.
• Drain Rock fills French drains, drywells, downspout runs and the drainage layer behind retaining walls.
• 3/4" Drain Rock, sold elsewhere as #57 stone, is clean stone with no fines, so water moves through it freely.
• #67 Stone is a slightly smaller washed size for drainage and concrete work.
• #89 Crushed Stone is the tightest washed stone, used for paver joints and fine bedding.

For drives and pads, Class 2 Base is the base material most California jobs call for, and Caltrans specifies it as Class 2 aggregate base. Some buyers ask for it as class ii base, class 2 aggregate base or base rock. Driveway Gravel tops a compacted base, and Stone Screenings, or DG, packs firm on paths and patios over that same base.

Ground and Conditions in Mariposa

Work runs best from late spring into fall. Winter storms turn clay and steep drives to mud, and the higher towns can see snow delays in mid-winter. Time a delivery around that window and you compact base on dry ground instead of chasing it.

Soils here are rocky hillside ground, often shallow over bedrock, with clay in many areas and fast-draining Stone Screenings in others. That mix decides your detail work. Clay pockets hold water, so a drive or pad needs a crowned surface and a drainage layer at the edge. Slopes above need a path for runoff before it reaches your pad.

Erosion follows the same pattern. Runoff down steep slopes, drives and road cuts does the damage in heavy winter rain, and intense rain on recently burned slopes can move debris. RipRap on a cut face or culvert outlet slows that water and keeps stone in place.

Delivery to Mariposa and the Surrounding Area

Order online and choose your quantity by the ton or by the cubic yard. Coverage depends on depth and area, so measure the pad or trench footprint and the depth you want, then match it to the material. Bulk delivery arrives as loose stone, sand or soil and gets placed where the truck can reach.

We deliver across Mariposa County, including Catheys Valley, Midpines, Hornitos, Coulterville and Fish Camp. Lead time depends on material and route, so plan around your pour or compaction date rather than the day you call.

Questions About Material in Mariposa

Do you deliver Class 2 base to Mariposa, CA?

Yes. California Rock Supply delivers Class 2 base across Mariposa and Mariposa County, including Catheys Valley, Midpines, Hornitos, Coulterville and Fish Camp. It arrives by the ton or yard as loose aggregate and is placed where the truck can reach. Measure your drive or pad footprint and depth so the quantity matches the job.

What gravel is best for a driveway in Mariposa?

Start with Class 2 base. It compacts into a stable layer that sheds water and carries weight, which suits the rocky hillside ground and clay pockets here. Top it with Driveway Gravel for a finished surface, or leave the base exposed if you want a firm, plain drive. Add a drainage layer at the edge where clay holds water.

Order Bulk Gravel and Base in Mariposa

California Rock Supply delivers Class 2 base, washed drainage stone, sand and soil across Mariposa and the rest of Mariposa County. Order online by the ton or yard, and we will bring it to your site. Place your order when your ground is workable and your quantities are measured.