Category: Water Resources

A Guide to Low-tech Process-based Restoration

By Colin Barry, PG What is Low-tech Process-based Restoration? The Need and History of LTPBR Total Benefits of LTPBR LTPBR Goals and Ideology Top Applications for LTPBR What is Low-tech Process-based Restoration? Low-tech Process-based Restoration (LTPBR) is a cost-effective and scalable approach to stream restoration that creates flow complexity in streams through use of increased… Read More »

What Is Bridge Scour? Why Should You Care?

The most common cause of bridge failures is from floods scouring bed material surrounding bridge foundations. What is scour? Simply put, scour is the engineering term for the erosion of soil surrounding a bridge foundation (piers and abutments). Bridge scour occurs when fast-moving water around a bridge removes sediment from… Read More »

What Is Riprap? And Why It Rocks!

What is Riprap? Riprap describes a range of rocky material placed along shorelines, bridge foundations, steep slopes, and other shoreline structures to protect from scour and erosion. Rocks used range from 4 inches to over 2 feet. The size of the rock needed on a project depends on the steepness of the slope and how… Read More »