Word: silts
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...silt and dredged fill from the Charles will make it impossible to build on the land, he said...
...Chan reserve -- the first of its kind in Central America -- includes beds of sea grass, which prevent silt from settling on the reef, and seven mangrove cays that serve as nursery areas for many of the species living there. "Reef, mangroves, sea grass -- they're all linked," Gibson notes. "If you touch one part, it affects the whole." The area appears to be sufficiently guarded against further damage: it is well patrolled, all regulations are being enforced, and fishing and collecting in the area have ceased. "We've seen an incredible rise in the diversity of fish life," Gibson says...
...could reach $111 billion. Southern Louisiana, which is losing land to the Gulf of Mexico at the alarming rate of one acre every 16 minutes, has already drawn up an ambitious mix of programs. In the biggest project, a $24 million pumping station would divert millions of gallons of silt-rich Mississippi River water onto the coastline to help stop saltwater intrusion and to supply sediment that will build up the eroding land. At least one parish is considering plans for a backstop dike to give residents time to escape should the sea finally reach their doors...
Poorer countries have fewer options. Wracked by periodic floods, Bangladesh cannot simply evacuate the "chars" -- bars of sand and silt in the Ganges Delta -- where millions of people have set up camp. But the government has drawn up plans for a network of raised helipads and local flood shelters to facilitate the distribution of emergency aid if, as seems inevitable, disaster strikes again. Meanwhile, the country can only appeal to its Himalayan neighbors to do something about the root cause of the flooding: the deforestation of watersheds in India and Nepal that has turned seasonal monsoons into "unnatural disasters...
...last year, a downpour sent near record floodwaters roaring along the spectacular gorge of the Williams, over the wall protecting the powerhouse and down into the turbine level. The water in the powerhouse fouled the turbine equipment and the vital compressors, which power the hydraulic systems, with stones and silt. The compressors had to be completely rebuilt...