Glossary of Terms

1 Acre-Foot/Year

Measurement of water use based on imperial units. It is approximately 119 cubic ft/day or 3.38 m3/d.  An average California household uses between one half and one acre-foot of water per year for indoor and outdoor use. Or 1 acre foot per year is approx. 892 gallons US per day.


Above Mean Sea Level


Association of Oregon Counties


Water within a body of permeable rock which can contain or transmit water. The source is groundwater, snow melt and rainfall.


American Viticultural Areas


Butane Hash Oil, an extract which is a type of cannabis concentrate that is produced using solvents.

Cannabidiol (CBD)

Chemical extracted from hemp that does not have significant intoxicating properties.  The oil, while not intoxicating, is psychoactive and is extracted by various means.  CBD can also be inhaled by smoking the hemp.


Also known as Marijuana, Cannabis sativa, legal to grow in Oregon since 2014.  It produces chemicals that have psychoactive and intoxicating properties.


Chronic Fatigue Syndrome, is a disorder characterized by extreme fatigue or tiredness that doesn’t go away with rest and can’t be explained by an underlying medical condition. CFS can also be referred to as myalgic encephalomyelitis (ME) or systemic exertion intolerance disease (SEID).


Gallons Per Minute, a water flow measurement.


Water held in pores and crevices in rocks below the surface. Sometimes exits in the ground in springs.

Critical Groundwater Area (CGWA)

via ORS 537.730, the Water Resources Commission may designate an area as a critical groundwater area if it meets certain criteria. This designation allows the Commission to take corrective actions to address groundwater issues to prevent continued water level declines.

Groundwater Limited Area (GWLA)

via the Water Resources Department, the permitted water use shall be limited to one acre foot per acre, per year.  This must be reassessed in 5 years and denied or extended for another 5 years if the Director finds the groundwater resources may support the extended use


A variety of Cannabis sativa plant that is grown for industrial use.  It is one of the fastest growing plants. It does not produce enough THC to create intoxicating effects. It does produce Cannabidiol (CBD) in high concentrations.  In the US it is considered hemp if it does not contain more that 0.3% THC.


A place where plants are grown for transplanting, for use as stock, for budding and grafting or for sale.

Oregon Administrative Rules (OAR)

Oregon Administrative Rules are set to help administer laws to the State.


Oregon Liquor Control Commission


Oregon Water Resources Department

Perched Aquifer

An aquifer that occurs above the regional water table due to an impermeable layer of rock or sediment layer above the main water table but below the land surface.  It is a limited source of water but may be trapped by a well.

Senior Water Users

Water rights that have been in use for the longest time by the owner of the water rights.  This does not indicate the age of the user.


Sensitive, Threatened or Endangered

Surface Water

Any body of water above ground: streams, rivers, lakes, wetlands and creeks.


Tetrahydrocannabinol, the main psychoactive  compound in cannabis that produces the high sensation.  It is available by smoking cannabis, is in oils, edibles, tinctures, capsules and more. They are produced by processing various parts of the Cannabis sativa plant.


Water Bearing Zones

Well Logs

The OWRD uses well logs to record depths of water, depth of the well, year drilled, domestic or monitored. These are recorded by county.

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