Watershed Block

Words: Bronzella Cleveland

https://watershedmaterials.com/
Photo copyright Ed Caldwell.

The Stanford Watershed Block’s color palette is inspired by the rich reddish-brown sandstone beneath the Stanford University campus

Watershed Block has introduced a new line of block all made using local materials that celebrate the region of their origin, all produced with the latest in sustainable building materials technology. The Lime White Watershed Block offers a zero-cement formula, a glacier-white appearance, and a novel mix design with a dramatically increased sustainability profile. The block uses no Portland cement, instead deriving strength from the high compression lithification of lime, recycled ground granulated blast furnace slag, and natural clays.

The Stanford Watershed Block’s color palette is inspired by the rich reddish-brown sandstone beneath the Stanford University campus. The block’s warm hue emerges as red clay from Amador County is mixed with crushed basalt from Mark West Springs, west of Calistoga, and quarry fines from Nun’s Canyon in the Mayacamas Mountains of Sonoma County. Finally, the Sweetwater Watershed Block (pictured) is comprised of mostly rhyolitic fines from Nun’s Canyon with a touch of crushed rhyolite from the BoDean quarry, both in the Mayacamas Mountains of eastern Sonoma County. The sunrise hue of the Sweetwater Block surfaces as the warm, almost peach color of the Nun’s Canyon fines overpowers the gray basalt from Mark West Springs.

Save

Hot This Time of Year
July 2026

Yes, summer is hot; that is just how it is. Summer heat can have effects on many things, and as I get older, I realize there is usually something I can do to tolerate the hot days. We all know the obvious, and I am sure every one of us has that person who

The Walls We Build
July 2026

As masons, we spend our careers building walls. We build them with brick, block, stone, and mortar, and we take pride in making them straight, strong, and built to last. But over the years, I’ve learned there is another kind of wall we build—the walls we

Owen Heimbach
July 2026

This month, the MCAA had the pleasure of speaking with SkillsUSA First Place Winner Owen Heimbach, a young mason just starting out whose enthusiasm for bricklaying is truly contagious. His passion for the craft was evident throughout our interview.

Backfill Your Foundation
July 2026

I’ve been noticing an uptick in a very specific kind of application lately, and once you see the pattern, you can’t unsee it. The résumé usually reads like a family photo album. “Started helping my dad when I was 15.” “Worked summers, then full time.” “R