| rdfs:comment
| - Periods in which rainfall falls below the normal range of variation. Examples include severe lack of rain and loss of surface water sources. (CMP)
- Conceptually, there are four main types of drought:
* Meteorological drought is brought about when there is a prolonged period with less than average precipitation. Meteorological drought usually precedes the other kinds of drought.
* Agricultural drought is brought about when there is insufficient moisture for crop or range production. This condition can arise, even in times of average precipitation, owing to soil conditions or agricultural techniques.
* Physiological drought is a condition afflicting plants that have been exposed to too much salt, preventing them from absorbing water from soil. It is not related to climatological drought.
* Hydrological drought is brought about when the water reserves available in sources such as aquifers, lakes, and reservoirs falls be
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| abstract
| - Periods in which rainfall falls below the normal range of variation. Examples include severe lack of rain and loss of surface water sources. (CMP)
- Conceptually, there are four main types of drought:
* Meteorological drought is brought about when there is a prolonged period with less than average precipitation. Meteorological drought usually precedes the other kinds of drought.
* Agricultural drought is brought about when there is insufficient moisture for crop or range production. This condition can arise, even in times of average precipitation, owing to soil conditions or agricultural techniques.
* Physiological drought is a condition afflicting plants that have been exposed to too much salt, preventing them from absorbing water from soil. It is not related to climatological drought.
* Hydrological drought is brought about when the water reserves available in sources such as aquifers, lakes, and reservoirs falls below the statistical average. This condition can arise, even in times of average (or above average) precipitation, when increased usage of water diminishes the reserves. Decision makers at all levels need to decide ahead of time on an operational definition of drought that is relevant for their circumstances, and what actions they will take when they are in a drought. Decision-makers include homeowners, farmers and ranchers, urban water suppliers, and policy makers. Each has different options and constraints.
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![[RDF Data]](/fct/images/sw-rdf-blue.png)