Engineering
300 W. Davis, Conroe
Conroe, Texas 77301

Business Hours
Monday- Thursday 7:30am-5:30pm
Friday 8am-5pm

Phone: 936.522.3100

Survey Benchmarks

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Survey Benchmarks & Datum

In 1999 the City installed a survey control network to ensure that a consistent horizontal and vertical datum is used by all. This control network, developed by Clark-Geogram, Inc. Land Surveyors , is based upon seven (7) existing control points, nineteen (19) National Geodetic Survey (NGS) benchmarks, and twenty-four (24) new monument pairs. "Now available online, click link above"

All City data is stored in the following datum:

Coordinate System: NAD1983 Texas State Plane Central Zone (FIPS 4203) (US Survey Feet)

Projection: Lambert Conformed Conic

Vertical: NAVD88,1991 adjustment (US Survey Feet

Click here for a map for City monuments and benchmarks.