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Engineering Support Division /  Amherst Cooperative Continually Operating Reference Station (CORS)

Town of Amherst Cooperative
Continually Operating Reference Station

GPS Base Station Disclaimer

The Town of Amherst Engineering Department in Amherst, NY collects the Global Positioning System digital data found on this website. Neither the Town nor their employees, make any warranty, for the accuracy, completeness, or usefulness of any GPS differential information. Town of Amherst is providing this information in good faith and shall in no event be liable for any lost profits, and special, indirect or consequential damages to any party, arising out of or in connection with the use or the inability to use the data hereon or the services provided. Furthermore, the Town of Amherst reserves the right to change, revise, or otherwise discontinue published data and/or these services at any time without further notice.

Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the Town of Amherst. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the Town of Amherst.

Contact Information

If you should have any questions or require additional information, please contact Christopher Schregel at 631.7154 or by email.

GPS Site Information

Location: Town of Amherst, New York
Organization: Town of Amherst
Station Name: TOA1
Latitude: 42° 59' 12.46256" (N)
Longitude: 078° 45' 52.49923" (W)
Ellipsoidal Height: 153.26 m

GPS Receiver Specifications

Receiver Model: Trimble 4700
Manufacturer: Trimble Navigation
Elevation Mask: 10 Degrees
Logging Interval: 5 Second
Collection Time: 365 days a year, 7 days a week, 24 hours a day
Rollover: Hourly

GPS Antenna Specifications

Antenna: Micro Centered L1/L2 with groundplane
Manufacturer: Trimble Navigation
Antenna Location: Engineering Department Roof

Base Station Timeline

Date Installed: July 2002
Adjusted by the NGS: September 2002
Joined Cooperative CORS: October 2004

Naming Convention, where abcd is the station name, 365 is the GPS day, and x is the hour letter in Universal Time Coordinated (UTC). The file is compressed in a zip format. Pkunzip or Winzip software is required to unzip and expand into observation, navigation, and meteorological files.

Data Storage

Data files are stored in an File Transfer Protocol (FTP) site and are stored as the following (file sizes are approimate):

RINEX (The Receiver Independent Exchange Format Version 2.10) – 195 Kb
DAT – 220 Kb
SSF – 120 Kb

CORS - Service Disruptions and Announcements

The Town of Amherst CORS is currently out of service.

Additional Base Station Information

Base Station Photos


About Amherst

The Town of Amherst was established in 1818 and celebrated its 200th Anniversary in 2018. The town has a geographical area of 53.6 square miles and a population of greater than 122,000.

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Americans with Disabilities Act (ADA)

The Town of Amherst ADA Coordinators are Robert McCarthy (Director of Human Resources) and Mark Berke (Commissioner of Buildings).

Click for more information about ADA.

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Get in Touch

  • General Information:
    (716) 631-7000
  • Email:
  • Address:
    Municipal Building (Town Hall)
  • 5583 Main Street
  • Williamsville, NY 14221