Calibration Base Line (CBL) Map


Welcome to the EDMI Calibration Base Line (CBL) Map. The map provides quick and easy access to the latest CBL information available to NOAA's National Geodetic Survey.

NGS Home
Calibration Base Line Program

Three ways to locate a CBL

  1. Zoom in to a specific location using your mouse.
  2. Use the Geographic Location Search box below to search by location.
  3. Use the Search tool to the right of the contents panel to search by CBL Identification Code.

Geographic Location Search

Search by location or decimal coordinates (lat/lon). An X is placed at the location entered.

Symbology

Symobology represents the current condition of the CBL

CBL Status is GOOD
GOOD
CBL Status is SUSPECT
SUSPECT
CBL Status is DISTURBED
DISTURBED

Notice:
Boundary representation is not necessarily authoritative

Map Last Updated: May 6, 2019

Help

Help Notes:

  • Mouse wheel and buttons on top left of menu will zoom in and out of map
  • Click markers to see information
  • Click on the search to search for a particular CBL ID

CBL Symbology Definitions

  • Good: No reported issues.
  • Suspect: An unverified issue has been reported.
  • Disturbed: A verified issue has been reported.

Who To Contact


Product Manager

  • Email the Product Manager

NGS Information Center

  • Email : NGS Info Center
  • Telephone: (301) 713-3242
    ( Mon. – Fri., 9:00 a.m. – 4:30 p.m., EST )

Geodetic Advisor

  • Find Your Geodetic Advisor