Although not a common occurrence, the City of Plano is susceptible to drought. There are four types of droughts: meteorological, hydrologic, agricultural, and socioeconomic.
A meteorological drought is a period of time, generally ranging from months to years, during which time the actual moisture supply at a given location consistently falls short of the climatological moisture supply.
The hydrological drought is where stream flows and reservoirs are low due to a lack of prolonged rainfall.
Agricultural droughts occur when the amount of water needed for crops is greater than the amount produced in the atmosphere or that which is available from other sources.
A socioeconomic drought occurs when the demand for an economic good exceeds supply as a result of a weather-related shortfall in water supply.
Warning time for drought is long, since drought events take place over long periods of time. It is estimated that a minimum of 50% of the population of Plano could be affected in any given drought. This includes water restrictions / rationing, economic impact, etc.
Droughts can lead to agricultural damage, environmental damage, and shortage of water needed for utilities and firefighting.
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