STOCHASTIC VOLATILITY

Stochastic volatility is volatility that varies over time at random. Stochastic volatility is used in the pricing of derivatives, mostly options. Such pricing models assume that the volatility of the underlying asset’s price fluctuates at random, with the random process driving the volatility sometimes correlated with the random process driving the asset price. Stochastic volatility […]

STOCK CERTIFICATE

A certificate issued by an irrigation company representing ownerhsip in the assets of the company including water rights. An ASSESSMENT is required, based on shares owned, to pay the operating expenses of the company.

STOCK POND

Impoundment, the principal purpose of which is to supply water to livestock.

STOCKING

A general term for the quantity of trees on an area, especially with reference to some management objective.

STONEWASHING

Stonewashing is a technique that creates a worn-look effect by washing garments with detergents and natural pumice or a synthetic stone. The process requires higher energy and water use than conventional textile laundering and it also decreases the lifespan of the washing machines used. A newer alternative, bio-stoning, uses enzymes (usually cellulase, a natural protein) […]

STOPLOGS

Beams placed on top of each other across a channel with their ends held in guides on each side of a channel or conduit to raise the upstream water level.

STORAGE

Water artificially impounded in surface or underground reservoirs for future use; water naturally detained in a drainage basin.

STORAGE CAPACITY

Volume of water that can be stored at the elevation of the primary spillway, including both active and dead storage.

STORM SURGE

An abnormal and sudden rise of the sea along a shore as a result of the winds of a storm.

STRANDED ASSETS

Assets exposed to devaluations or conversion to ‘liabilities’ because of unanticipated changes in their initially expected revenues due to innovations and/or evolutions of the business context, including changes in public regulations at the domestic and international levels.