1856

Original Township Plat - Jefferson County

First official survey of Jefferson County township boundaries and sections.

1872

Original Land Grant Deed

Land grant deed documenting the original property boundaries and ownership.

1891

Original Field Notes - County Line Survey

Detailed field notes from the original county boundary survey.

1910

Original Monument Records

Documentation of original survey monuments and witness trees.

1856

Original Township Survey

First systematic survey of the township.

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1872

Land Grants Issued

Distribution of original land grants to settlers.

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1891

County Line Survey

Establishment of official county boundaries.

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1910

Monument Documentation

Comprehensive recording of survey monuments.

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1920

First Aerial Survey

Introduction of aerial photogrammetry techniques.

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1925

State Coordinate System

Implementation of standardized coordinate system.

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1930

Triangulation Network

Establishment of primary triangulation network.

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1935

First Use of GPS

Introduction of GPS technology into surveying.

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1940

Land Surveying Act

Establishment of land surveying standards.

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1945

Electronic Distance Measurement

Beginning of electronic measurement techniques.

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1950

Introduction of CAD

Computer-Aided Design becomes standard.

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1955

Satellite Positioning

First satellite-based positioning systems.

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1960

Laser Scanning Technology

Introduction of laser scanning in surveying.

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1965

Geographic Information Systems

Advent of GIS technology in spatial analysis.

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1970

Digital Terrain Models

Creation of 3D models from terrain data.

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1975

Total Stations

Integration of electronic measuring instruments.

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1980

Robotic Total Stations

Full automation of total stations.

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1985

GNSS Technology

Global Navigation Satellite Systems introduced.

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1990

High-Precision Mapping

Advancements in high-accuracy maps.

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2000

Real-time Kinematic Positioning

RTK GPS for real-time surveying.

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2020

3D Laser Scanning

Widespread use of 3D laser scanning for documentation.

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