A high sierra environment, Washoe County benefits from a variety of flora including pine trees
A high sierra environment, Washoe County benefits from a variety of flora including pine trees


 Sparks (SPK2)

GPS Base Station
City of Sparks City Works Bldg
1701 E. Prater Way
Sparks, Nevada

Image of Sparks Base Station Antenna

Image of Trimble 5700 Receiver
 Mapping Indentifier: N53SM01134  
Datum: NAD83/94(HARN) Elevation Mask: 10°
Latitude: 39° 32` 26.69993" N Logging Interval: 5 seconds
Longitude:119° 42` 36.43779" W Rollover Period: 2 hours

Data collected with Trimble Net R5 GPS receiver and Trimble Reference Station Software  

Ellipsoid Height: 1323.811 meters ARP Antenna Height: 0

NOTICE: Due to New “FCC Narrow Band Radio Broadcast Transmission Regulations” Washoe County is NO longer providing GPS RTK RADIO corrections.



Data Files:
The following links will access a FTP site. Once you have identified the files you want, click on the filename link. This will initiate the FTP session that will download the desired files to your hard drive.


File Naming:
Each file is named using CORS style format, SSSSDDDh.dat.exe or SSSSDDDh.YYo.zip. SSSS is the GPS Base Station Identifier, DDD it the Julian day, h is the hour beginning with "a" being 0:00:00 and "x" being 23:00:00 in a 24-hour format for both dat and rinex files. Rinex files have YY being the year observed added to the file naming.

Example: For January 1, 2005, the file naming would  be as follows: spks001a.dat.exe (dat format), spks001a.05o.zip (rinex format) 

Data Storage:
Data Files are normally available online for at least 21 days, after which they will be deleted. Data is not archived prior to deletion and is therefore unrecoverable. Users are encouraged to download data as soon as practicable.


Contact Information:
Mike Gump (775) 325-8033
Vic Erickson (775)328-2318
Washoe County Dept of Public Works
1001 E. Ninth Street
Reno, NV 89520
FAX: (775) 328-3699