300 W. Davis, Conroe
Conroe, Texas 77301
Monday- Thursday 7:30am-5:30pm
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.