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Peak flows along Plum Creek and its two major tributaries, East and West Plum Creek" exceeded the "estimated 1965 flood peaks with the 100-year (1% annual chance) and 500-year (0.2% annual chance) published flow" by two to four times the 500-year predicted flood rate. [7]
A 100-year flood is a flood event that has on average a 1 in 100 chance (1% probability) of being equaled or exceeded in any given year. [1] A 100-year flood is also referred to as a 1% flood. [2] For coastal or lake flooding, a 100-year flood is generally expressed as a flood elevation or depth, and may include wave effects. For river systems ...
A Special Flood Hazard Area (SFHA) is an area identified by the United States Federal Emergency Management Agency (FEMA) as an area with a special flood or mudflow, and/or flood related erosion hazard, as shown on a flood hazard boundary map or flood insurance rate map. [1]
An odds ratio (OR) is a statistic that quantifies the strength of the association between two events, A and B. The odds ratio is defined as the ratio of the odds of event A taking place in the presence of B, and the odds of A in the absence of B. Due to symmetry, odds ratio reciprocally calculates the ratio of the odds of B occurring in the presence of A, and the odds of B in the absence of A.
Napa County Flood Control and Water Conservation District 29,025 35,802 0.7% Oak Flat Water District 5,700 7,000 <0.1% Palmdale Water District 21,300 26,300 0.5% Plumas County Flood Control & Water Conservation District 2,600 3,200 <0.1% San Bernardino Valley Municipal Water District 102,600 126,600 2.5% San Gabriel Valley Municipal Water District
A pie chart showing the percentage by web browser visiting Wikimedia sites (April 2009 to 2012). In mathematics, a percentage (from Latin per centum 'by a hundred') is a number or ratio expressed as a fraction of 100.
Climate change is altering the geographic range and seasonality of some insects that can carry diseases, for example Aedes aegypti, the mosquito that is the vector for dengue transmission. Global climate change has increased the occurrence of some infectious diseases. Infectious diseases whose transmission is impacted by climate change include, for example, vector-borne diseases like dengue ...
Flood is the most common form of disaster in Bangladesh. The country was affected by six major floods in the 19th century and 18 floods in the 20th century. Among them, 1987, 1985 and 1998 were the most catastrophic. Major cyclones that occurred in the 20th century were in the years 1960, 1961, 1963, 1970, 1985, 1986, 1988, 1991, 1995.