Number of times per year when the Thames Barrier was closed to avoid a risk of flooding. Specific Indicator The Thames Barrier is closed when high water levels at Southend and the flow of the River Thames at Teddington Weir (the tidal limit of the Thames) reach critical levels.The specific indicator is the number of times per year that the Thames Barrier is closed to avert a risk of flooding.[Source:Environmant Agnecy, Thames Barrier, Eastmoor St., Charlton, London SE7 8LX]. Relevance The Thames Barrier was commissioned in 1982 and cost ,530 million.It was designed to provide protection for London from tidal flooding until 2030 (and, by raising the gates, beyond). Over 150 km2 of London lies below high tide level and the homes of 750,000 Londoners are at risk from a major storm surge.urrently, the major flood threat to central London is from storm surges-when meteorological conditions (primarily atmospheric pressure and wind) exaggerate tidal peaks. Global warming and the resulting rise in sea levels (involving both thermal expansion and contributions from ice melt) will increase this risk.
The IRS mileage reimbursement rate is an optional rate, recommended by the Internal Revenue Service in the U.S., that is used to calculate the deductible costs of operating an automobile for business, medical, charitable, or moving to a new home reasons.
2015/2016 IRS Mileage Reimbursement Rates. * TIP: Bookmark this page for future reference. Page is updated regularly. The Internal Revenue Service issued the 2016 optional standard mileage rates used to calculate the deductible costs of operating an automobile for business, charitable, medical or moving purposes.