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Wisconsin Society of Land Surveyors

Providing Support and Professional Development for Land Surveyors since 1952

Event Details

Northwest Chapter Spring Seminar

  • 19 Apr 2024
  • 8:00 AM - 4:00 PM
  • Rolling Oaks Restaurant, 450 W Division Ave, Barron, WI


  • The $75 fee covers the program, coffee, rolls and lunch.

Registration is closed

Northwest Chapter Spring Seminar <-- Click here if you prefer to print registration form and mail a check.

Program schedule:

8:00-9:00 Registration / coffee and rolls

9:00-10:15 Session 1: PLSS Lost Corner Methods

10:15-10:30 Break

10:30-12:00 Session 1 continued

(Session 1 Total - Category 1 or 3 – 3.3 PDH)

12:00-1:00 Lunch

1:00-2:00 Session 2: Ethics

2:00-2:15 Break

2:15-4:00 Session 2 continued

(Session 2 Total - Category 2 – 3.3 PDH)

4:00 End of Program

6.6 PDH’s total

Certificate of Attendance will be emailed to everyone 2-3 weeks after the seminar.

Registrations at the door will be accepted, however we encourage pre-registration to determine quantity for lunch.

Speaker Bio:

Jerry Mahun, PLS is a three-retired surveying educator. His career started at UW-Platteville in 1979, then progressed through Purdue, Penn State University, and finally Madison Area Technical College after which he retired for the first time. Only able to stay retired for one year, he then taught part-time once again at UW-Platteville for six years before retiring a second time. Since then, he has been working with as a Content Specialist for licensing exam review courses, consults with, and is an occasional Mentoring Mondays presenter. 

In addition to teaching Jerry has worked for the BLM, NGS, WisDOT, and done consulting. He has presented diverse surveying workshops and seminars to a variety of different audiences since 1984. He maintains an Open Access Surveying Library at as a free surveying education resource. 

Jerry is a Wisconsin Professional Surveyor, and a member of the Wisconsin Society of Land Surveyors having served as a Director and on a number of its committees.

Course Descriptions: 

PLSS Lost Corner Methods and Ethics

Most surveyors know the single- and double-proportionate methods of lost corner re-establishment. But many may not be familiar with additional methods identified in the Manual of Instructions: modified single proportion, 1-, 2-, 3-point control, irregular boundary, grant boundary, etc. Their applicability depends on original boundary creation conditions and surviving evidence. The role of meander corners in Wisconsin can have an effect on how these methods are applied. We'll examine the different methods and how they are applied using example situations. Some procedural issues and their resolutions, including documentation, will be discussed.


We know what ethical behavior is but can we explain it and describe how it affects decisions we make? How do personal and professional ethics interact; are they compatible? Can ethics be legislated? These questions, along with general ethical theory, will be addressed as a backdrop for case studies discussions.

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