Sources of Local Survey Control Data
Can you contribute?
These links lead to survey control data provided by agencies other than NGS (though some NGS marks may be included). If you hunt survey marks, you may have encountered some that are not found in the NGS database. Check here-you may find data on your mark.
I'm actively seeking all information about local survey control monuments. If you know of a website that's not shown here, please e-mail me. I'd also be happy to list contact information for offices that will provide the data, even if they currently have no data published on the web.
Alabama
Huntsville GPS Control Monuments and Survey Control DataHuntsville GPS Monuments
Alaska
Anchorage Municipality Benchmarks MITS FilesArizona
Maricopa County Land Survey SectionParadise Valley Survey Benchmarks
Pima County/City of Tucson DOT Geodetic Control Points
California
Anaheim City Bench Mark ViewerCalifornia Spatial Reference Center
Colton City Bench Marks
Folsom City Bench Mark System
Los Angeles City Bench Marks
Los Angeles County Bench Mark Retrieval System
L.A. County Engineering Records
Orange County Public Records Retrieval System
San Diego County Horizontal Control (Click "Custom Map" and check the "Survey Control Monuments" layer.)
San Diego County Vertical Control
Stockton City Benchmarks, Elevations and Descriptions
Colorado
Boulder County Survey Control PointsDouglas County Control
Larimer County GPS Control Point Map
Thornton City Control Network
Delaware
Delaware Geological Survey Earth Science Information CenterFlorida
Florida Department of Environmental Protection Land Boundary Information System (LABINS)Orlando Survey Benchmarks
Sarasota County GIS - Benchmarks
Seminole County Horizontal Control
Southwest Florida Water Management District Survey Control
Georgia
Fayetteville City Control NetworkIdaho
Ada County Horizontal and Vertical Survey Control InformationIllinois
DuPage County BenchmarksKane County Geodetic Monuments
West Chicago Survey Control Network
Indiana
DNR "Division of Water" Control MarksKansas
Johnson County Survey Control NetworkCity of Wichita Bench Marks PDF, 280KB
Kentucky
The Commonwealth MapJefferson County Geodetic Control Map
Louisiana
Public Land Survey Monument Recovery DatabaseMaine
MaineDOT Survey Control Points Web Mapping Application PortalMaryland
Frederick County Survey Control MonumentsHarford County Control Points
Montgomery County Survey Control Map (no datasheets)
Massachusetts
MassHighway Geodetic ControlMinnesota
Dakota County Bench MarksHennepin County Land Survey Control
Minneapolis Survey Monuments
Minnesota Department of Transportation Geodetic Database
Sherburne County Survey Information
Missouri
Missouri DNR-Geological Survey and Resource Assessment DivisionSpringfield City Elevation Benchmarks
Nebraska
Lincoln City Survey BenchmarksNevada
Clark County Public Works - County Surveyor's Benchmark BookNew Mexico
Albuquerque Survey Monument DatabaseNorth Carolina
North Carolina Geodetic SurveyOhio
Lucas County Benchmark InformationMedina County GPS Control Monuments
Portsmouth City Control Point Location Map
Oklahoma
Muskogee Survey Control DataMuskogee Survey Control Map
Oregon
Eugene City BenchmarksGeometronics-Oregon Department of Transportation
Lane County Horizontal and Vertical Controls
Linn County GIS Maps (The search option has a section for benchmarks.)
Medford City Surveyor's Benchmarks
Polk County Benchmark Search
Salem City Survey Control
Pennsylvania
Nine Mile Run, PittsburghPennDOT Photogrammetry Asset Management System Public Map Viewer
South Carolina
South Carolina Geodetic SurveySouth Dakota
County BenchmarksTennessee
Knoxville Survey Control PointsTexas
Arlington City Benchmarks / Vertical Controls / by IDBrazos County Benchmark Numbers List
Carrollton GPS Benchmarks
Carrollton Vertical Benchmarks
Euless City GIS (click on Survey Monuments)
Harris County Floodplain Reference Marks
Huntsville Survey Control Data
Round Rock Survey Control Monuments
Utah
Utah County Survey ControlVermont
Vermont OnLine Geodetic Information System (VOLGIS)Virginia
Arlington County Control Monuments/MapsChesapeake City Survey Monuments
Gloucester County Survey Monuments
Henrico County Control Network
Spotsylvania County GPS Monumentation Maps and Data (see .zip file)
Stafford County Control Data
Washington
Kirkland Survey Control DataPierce County Survey Control Database
Snohomish County Monument Data
Thurston County GeoData Center
Washington Council of County Surveyors
Washington State Survey Control Warehouse (Requires the Autodesk MapGuide Viewer.)
WSDOT Survey Monument Database
Wisconsin
Sun Prairie BenchmarksWisconsin ControlFinder (contains NGS, USGS, and county data)
Australia
SMES (Victoria)SurCom (Tasmania)
Survey Control Mark Detail Database Online
Canada
Canada Geodetic Survey DivisionMASCOT (British Columbia)
Regional Niagara Control Points