Defining the Waters of the United States
Ayres’ East Side Detention Facility project in Colorado required water quality permitting through the U.S. Army Corps of Engineers. By Karen Menne-Jacobsen, PE, CFM We need clean water to drink and stay healthy. Streams, lakes, rivers, and other water bodies filter pollutants, recharge groundwater, slow erosion, provide wildlife habitat, offer flood protection, and have abundant… Read More »
Tags: Clean Water Act, filtering pollutants, Groundwater, hydrologic cycle, protected waters, Safe Drinking Water, water pollution
Coming Full Circle: 360-Degree View Aids Projects
By Paul Crocker Everything from shopping to schooling has seemingly gone virtual these days. Taking 360° virtual project tours is now possible too. If you have questions, we have answers: About the Expert: Paul Crocker is a project manager in our survey group. He performs and oversees unmanned aerial system (UAS) missions, coordinates UAS pilots… Read More »
Tags: 360 View, Aerial Imagery, High-Resolution Views, Land Survey, Site Overview, Survey, Utility, Virtual Tour, Virtual Walkthrough
CFD Hydraulic Modeling Helps Find Solutions to Dam Flow Problems
By Pete Haug, PE Today’s engineering challenges are complex, especially for dam owners and operators. Flow problems around dams include spillway scour, riprap damaging currents, river debris collecting in the wrong places, and uneven overtopping of training walls. Imbalanced flow entering powerhouse units can create trash rack vibrations, excessive bearing wear, and even air-core vortex… Read More »
Tags: 1D Hydraulic Modeling, 2D Hydraulic Modeling, aquatic organism passage, CFD, Computational Fluid Dynamics, dam structures, decision-making demonstrations, Hydraulic Modeling, River features, stormwater structures, water treatment