Central Valley Chapter
California Land Surveyors Association

Promoting the professional practice of land surveying in the California Central Valley.
Serving the greater Merced, Stanislaus and San Joaquin County Area."




The CLSA Central Valley Chapter is supported by the volunteer efforts of its members. Membership in the chapter by all in the California Central Valley with an interest in land surveying is strongly encouraged. As the membership in the chapter grows, and as members become more active, the Chapter is able to more effectively accomplish its goals.

Why become a member?

There are many benefits that come from membership in the chapter. A few of these member benefits are listed below:

  • Access education provided at chapter meetings by guest speakers and chapter members.
  • Stay up-to-date with changes that impact the land surveying profession. This includes changes to local laws and regulations.
  • Engage in healthy debate about local land surveying standards and professional ethics.
  • Build good working relationships with land surveyors working at local companies and local government agencies.
  • Work with other local land surveyors to promote the profession and improve working conditions for surveyors.

Chapter Waives Dues for Unemployed Members

At the October 2011 meeting the Central Valley Chapter voted to waive 2012 chapter dues for any members (or new members) who have become victims of the current economic downturn and are unemployed. Please fill out the Membership Application, enter "Unemployed" on Line 7 for the Name of Firm, Agency or College, submit your application, and your 2012 Dues are waived.

What are the requirements for membership?

Members do not have to be licensed surveyors. Everyone that works in the land surveying profession or related professions are encouraged to become members. This includes individuals working in title, real estate, construction, GIS, cartography and other related fields.

Members are strongly encouraged to volunteer for additional responsibilities within the chapter. This includes serving as a chapter officer, a chapter director, working on one of the chapter committees, or presenting a short workshop/seminar at a chapter meeting.

Membership Committee

Rich Brown, Chairman
Keith Spencer

Email the Membership Committee

To join the Central Valley Chapter:


To join the California Land Surveyors Association:


Chapter News:

CLSA Sacramento Chapter Presents:

Dennis Mouland Seminar, September 15 and 16
Space is limited, reserve your slot today!

(see attached flyer)

Continous GPS Stations

A message from Rob McMillan:

Below are excerpts of emails from Unavco's Chris Walls and Sharon Williams of the National Science Foundation. Please read and respond to the survey at the link below. This is particularly critical if you perform any of the following:

  • Static GPS surveys
  • RTK GPS surveys using a virtual reference network (CSDS, Leica, Topcon, AZGPS, OCRTN, CVSRN, etc.)
  • Surveys tied to NGS control (the National Spatial Reference System (NSRS))
  • Surveys tied to the California Spatial Reference System (CSRS)
  • Surveys in state plane coordinates
  • Surveys tied to NAVD88 datum
  • Surveys tied to tidal datums
  • Surveys in areas of tectonic activity
  • Surveys using HTDP
  • Monitoring surveys (structural monitoring, dam deformation, etc)

This infrastructure also can support advancements in earthquake early warning, precision agriculture, automated machine guidance, autonomous vehicles, positive train control, and more.

Dear Colleagues, The future performance, capabilities, and station count of the Plate Boundary Observatory is at a crossroads. UNAVCO is currently developing budgets and plans for operating the network beyond 2018 including scenarios of reduced network density. If you rely on UNAVCO-provided PBO data then I recommend you make it clear what the uses are, what the regions of interest are, and even specific stations or data type (i.e. 1Hz, 5Hz, 15s, Met, real-time, seismic etc...). Please forward to collaborators who will miss the data if resources are not available.

PS - the survey will take 5-10 minutes, contrary to what is described below. Thank you for your participation.

Dear UNAVCO Users,
At the request of the National Science Foundation (NSF), the Science and Technology Policy Institute (STPI) has been asked to solicit feedback on the activities, products, and services provided by UNAVCO. NSF, UNAVCO, and STPI would all appreciate your time and response to this survey. The survey itself should take between 20-30 minutes. Your participation is completely voluntary. Your responses will not be shared individually and will not impact your relationship with NSF or UNAVCO. STPI is an independent, Federally Funded Research and Development Center and will be collecting and analyzing all responses. If you are a UNAVCO member or RESESS participant and have received a previous invitation to this survey, please disregard this email. We apologize for multiple survey invitations, but we are hoping for feedback from as many individuals as possible. Please feel free to contact Sharon Williams at STPI (swilliam@ida.org; 202-419-5411) or Russell Kelz (rkelz@nsf.gov; 703-292-4747) at NSF if you have any questions or concerns.

Survey link:

Next Scouting Merit Badge Session

Will be August 27th

Central Valley Chapter Awarded Chapter of the Year at 2016 Convention

Our Newsletter "The Prism" July 2016

California Surveyor: "Summer 2016"


BPELSG Example CBT Examination Questions:

BPELSG Bulletin: Spring 2016

New in the Library:

Tuolumne County - Updated Record Maps and Corner Records, added Mineral Surveys
San Joaquin County - added Filed Map Footprints
updated February 2016 Guide to the Preparation of Maps
updated ROS, PM, M&P, Corner Records
Madera County - updated Record maps
Santa Clara County - updated Record maps and Corner Records
Sacramento County - added link to Geographical Map Index
Fresno County - updated record maps
Stanislaus County - updated record maps

CLSA Chapter Website of the Year - 2012-2014