LAND SURVEY TERMS “W”
GLOSSARY OF U.S. BUREAU OF LAND MANAGEMENT SURVEYING AND MAPPING TERMS
Land Survey Terms “W”, A convenient source for our clients and website visitors
W (Land Status Records) – West.
WA – Washington.
WAA (Land Status Records) – War Assets Administration.
WAR DEPT (Land Status Records) – War Department.
WASH. – Washington.
WASH MER (Land Status Records) – Washington Meridian.
WC – Witness Corner.
W/CHG (Land Status Records) – With Change(s).
WCMC – Witness Corner Meander Corner. WC is the abbreviation for Witness Corner when used alone or, as in this
case, with another abbreviation; however, in the field notes or in simply talking about it, a surveyor would say,
“Witness Meander Corner,” not “Witness Corner Meander Corner.”
WD (Land Status Records) – Warranty deed.
WDL (Land Status Records) – Withdrawal.
WDN (Land Status Records) – Withdrawn.
WFO – Western Field Office. Established in Portland, Oregon in 1973. See SPECIAL OFFICES (BLM).
W/H – Width-height ratio.
WI – Wisconsin.
WILL MER (Land Status Records) – Williamette Meridian.
WIS. – Wisconsin.
W/O (Land Status Records) – Without.
WO – Washington Office.
WP (Land Status Records) – Water Power.
W P – Witness Point.
W.P.C. – Witness private claim. Used in the speciman field notes in the General Instructions of 1855.
WP DES (Land Status Records) – Water Power Designation.
WR (Land Status Records) – Water rights.
WR MER (Land Status Records) – Wind River Meridian.
WS (Land Status Records) – Watershed.
WT (Land Status Records) – Warrant.
WV – West Virginia.
WWV – Radio time signal station call letters originally at Wheeling, West Virginia but now in Boulder, Colo.
WWVH – Radio time signal call letters for the Hawaii station.
WARPED MODEL – A photogrammetric model which will not fit the vertical control.
WATER COTE – A tradename for a dichromate coating.
WATER GAP – A pass in a mountain ridge through which a stream flows.
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WATER LEVELING – A method of obtaining relative elevations by observing heights with respect to the surface of a body of still water.
WAVELENGTH – Displacement of a wave which occurs during one complete period. Wave Velocity = Frequency x Wavelength.
WAVING THE ROD – Slowly pivoting a leveling rod back and forth so the instrument operator can observe the smallest reading.
WEIGHT – The relative worth of an observed value or quantity, expressed numerically.
WEIGHTED MEAN – The value obtained by dividing the product of individual observations and their weights by the sum of all the weights.
WIDE ANGLE LENS – A lens having an angle of coverage between 75 and 100 .
WIDTH BETWEEN FLIGHTS – The distance between adjacent flight lines.
WIDTH-HEIGHT RATIO – In aerial photography, the ratio of the distance between adjacent flight lines to the flight height. In photogrammetry, the ratio of the width of a neat stereomodel (that is, the dimension normal to the flight lines) to the flight height.
For some photographic conditions these two W/H values may not be exactly equal, but differences are usually insignificant.
WIGGLING IN – The process of setting an instrument on direct line between two fixed points by successive approximations and sightings.
WING POINT – A pass point at the extreme right or left of the flight line.
WITNESS MARK – A mark placed at a known distance and direction from a survey station to aid in its recovery and identification. Sometimes called witness post.
WORLD AERONAUTICAL CHARTS (WAC) – A standard series of 1:1,000,000-scale charts designed for aerial navigation.
For areas outside the United States, this series has been superseded by the Operational Navigation Charts (ONC).
For blank charts used over water or unmapped land areas, see UNIVERSAL WATER CHARTS.
WRATTEN FILTER – A trade name of any one of a series of filters used in photographic processes, bearing a designation keyed to its spectral transmission.
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