Visual Resources Glossary

Select a letter from the list below to view glossary terms and acronyms/abbreviations. The agency abbreviation following the definition indicates the definition source.

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A B C D E F G H I K L M N O P Q R S T U V W

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Unacceptable alteration

A scenic integrity level (never an objective) where human activities of vegetative and landform alterations are excessive and totally dominate the natural or natural-appearing landscape character. Unacceptable alterations are "what not to do to any landscape," regardless of the distance from which the management activity may be observed. (USFS)

Unity

Landscape with a quality or state of being made whole or a condition of harmony. (USFS)

Urban (landscape character type)

Landscapes consist of developed, densely populated areas typically centered on a central commercial core. Infrastructure and circulation patterns are present. (USFS, NPS)

Use volume

The total volume of visitor use on a travel route or destination. (BLM)

Utility-scale

Descriptive term for energy facilities that generate large amounts of electricity that is delivered to many users through transmission and distribution systems. (NPS)

Utility-scale renewable energy

Descriptive term for renewable energy facilities that generate large amounts of electricity that is delivered to many users through transmission and distribution systems. (NPS)