Well-Engineered Landfills Protect Water Supply
By Logan Seipel, PG Water is always on the move: down from the clouds as rain or snow, into the soil and eventually groundwater, back out again through streams and wells, evaporating from water bodies and transpiring from plants and animals back into the atmosphere to return to us again as precipitation. The water we… Read More »
Tags: Closed Landfills, Contamination, Groundwater, Groundwater Monitoring, Landfill, Landfill Cap, Leachate, U.S. Environmental Protection Agency, USEPA, Water, Water Cycle, Wisconsin Department of Natural Resources
River Hydraulics in Steep Canyon Environments
This is a view of US 34 within the Big Thompson Canyon during the final repair phase in late 2017. By John Hunt, PE; Will deRosset, PE, CFM; and Anthony Alvarado, PE, CFM The September 2013 flood in Colorado devastated the northern Front Range, causing widespread damage to critical infrastructure and transportation networks. Hundreds of… Read More »
Tags: 1D Hydraulic Modeling, 2D Hydraulic Modeling, Erosion, Flood, Hydraulic Analysis, Matrix Riprap, Riprap, River Engineering, River Hydraulics, Water Resources
HAWK Signals Get Drivers’ Attention, Let Pedestrians Cross Safely
The Wisconsin Department of Transportation recently installed this HAWK crosswalk on Riverside Drive (State Highway 57) in Allouez, near Green Bay. The pedestrian-activated crosswalk gives walkers and bicyclists safer access to the nearby Fox River State Recreational Trail. Crosswalks have come a long way since The Beatles made one famous by picturing it on… Read More »
Tags: Crosswalk, Federal Highway Administration, FHWA, HAWK Crosswalk, High-Intensity Activated Crosswalk Beacon, Rapid Flashing Beacon, RRFB, Traffic Engineering