A $3 billion project spanning 19 years is underway in Cleveland; it will divert nearly all the stormwater and raw sewage that currently reaches Lake Erie and its tributaries. The project comprises 21 miles of tunnels under the city and inner suburbs and is designed to make the lake safe enough to swim in.
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Drawing on recent satellite data, researchers at Princeton University and the National Oceanic and Atmospheric Administration's Geophysical Fluid Dynamics Laboratory say changing weather patterns will lead to increased dust activity across the southern Plains in the latter half of the century. Their climate model will allow them to make "specific projections [that] may provide an early warning on erosion control, and help improve risk management and resource planning."
Since 2010, sediment basins and more than a dozen ponds have been built to mitigate erosion and slow sediment from reaching Iowa's 174-acre Lake Geode. Engineers now plan to drain the lake through a 24-inch pipe and reconstruct the lake bottom to create a healthier body of water.
After many years of preventing silt and muck from reaching Chesapeake Bay, Maryland's Conowingo Dam is no longer able to perform that function. Now Gov. Larry Hogan is urgently seeking solutions to rid the bay of sediment and chemical runoff and has received proposals from a dozen contractors.
Construction is expected to start next year on a $550 million project to replace the aging wastewater pipeline system between Carson and San Pedro in California. Work will start with an access shaft for a 7-mile tunnel, and the concrete walls will be placed at the same time the tunnel-boring machine creates the 18-foot-wide line.
Bioretention is a commonly favored, low-impact method of addressing microbial infestation affecting urban water use. However, a study finds highly variable effectiveness for installed bioretention cells with fly-ash amended soils.
Growing human demand for water in the intermountain West is drawing down the region's saline lakes, with the Great Salt Lake now half its natural size, National Audubon Society research reveals. Bird populations are greatly affected by the loss, the organization says, and it is making plans to address the problem by helping the lakes receive the water they need.
Marysville, Pa., plans to stretch out its MS4 compliance over five years to absorb the considerable cost of diverting sediment and pollutants from reaching the Susquehanna River and Chesapeake Bay. The cost is now estimated at as much as $130,000 a year, with strategies that include retention basins, bioretention features, dry extended-basins and pipe-end traps.
The age-tested method of barriers to protect waterways, reduce erosion and control sediment is being used in New Zealand to contain contamination and reduce degradation. Riparian margins ranging along waterway boundaries also have the benefit of improved health for livestock drinking from open waters.
Interested in serving on the IECA Region One Board of Directors? Learn more about the responsibilities and requirements to serve on the IECA Board. And, download a nomination form to submit the nominee of your choice -- you may nominate yourself. Nominations close July 28. Submit now!
New online training bundles provide training at a discount (up to 50% in some cases). Learn more about the four new bundles and the discount and PDH credit for each online package. And, you can print your certificates online once you've completed your training. Learn more!