OC-CLSA Angels' Night - June 30, 2017
Jun
30
5:30 pm17:30

OC-CLSA Angels' Night - June 30, 2017

  • Angels' Stadium

Friday Evening – June 30, 2017   Tailgate 5:30 PM - Game 7:05PM

(Angel’s Stadium)   2000 E Gene Autry Way, Anaheim, CA 92806

Event: Angels vs.Mariners &   18th Annual “Joey Traps” Tri-Tip BBQ

Cost: $25.00 per Ticket w/ Tailgate

Includes Game Ticket and all-you-can-eat / drink BBQ (Tri-tip, Chicken, Hot dogs, peanuts).

You must pay in advance so we know how much food/drink to purchase.

Questions? Call or e-mail Joe Padilla at (657) 348-9452 or jpadillapls@yahoo.com

Tickets are purchased from us online but will be available for pickup in person at tailgate (not shipped).

Purchase them ahead because this event SELLS OUT every year, don’t be left out! Order early!!!!

PURCHASE TICKETS

https://squareup.com/market/oc-clsa/item/clsa-angels-night

OCC Board Meeting
Sep
12
5:00 pm17:00

OCC Board Meeting

  • D. Woolley & Associates, Inc.

Monthly Chapter Board Meeting

Directors and officers/admin expected.

All others welcome, but please RSVP.

Virtual Access:   https://www.freeconferencecall.com/wall/techczar


OCC Board Meeting
Jun
13
5:00 pm17:00

OCC Board Meeting

  • D. Woolley & Associates, Inc.

Monthly Chapter Board Meeting

Directors and officers/admin expected.

All others welcome, but please RSVP.

Virtual Access:   https://www.freeconferencecall.com/wall/techczar

OCC JPPLC Meeting (Virtual)
May
24
12:00 pm12:00

OCC JPPLC Meeting (Virtual)

  • https://www.freeconferencecall.com/wall/techczar

https://www.freeconferencecall.com/wall/techczar

If you are not an official member, please e-mail to RSVP for attendence: jpplc@oc-surveyors.org.

Chapter Meeting - KEYS TO SUCCESSFUL MAP PREPARATION
May
23
11:30 am11:30

Chapter Meeting - KEYS TO SUCCESSFUL MAP PREPARATION

  • JT Schmid's - The District of TUSTIN

KEYS TO SUCCESSFUL MAP PREPARATION

2017 Secretary, Jonathan Maddox, PLS

This is the introduction of the keys to successful map preparation. We will discuss the required information and the process of showing the information on the face of the survey. A licensed surveyor makes sound decisions based on defendable principles supported by established laws.

PLEASE RSVP BY GOING TO THIS LINK: https://goo.gl/forms/UGMZG1zyJJrt5UpF3

Pre-Pay and RSVP by this link: https://squareup.com/store/oc-clsa/item/lunch-meeting-chapter

FLYER

Members: $30 // Non-Members: $40 // Students: $25

Checks Payable to: ORANGE COUNTY CLSA

Mail: PMB 201, 13681 NEWPORT AVE., SUITE 8, TUSTIN, CA 92780

2017 Bill Young Memorial Scholarship Golf Tournament
May
19
11:00 am11:00

2017 Bill Young Memorial Scholarship Golf Tournament

  • Morongo Golf Club at Tukwet Canyon

THE CAUSE
To raise funds to provide scholarship opportunities for college students pursuing a Bachelor's degree in the field of Land Surveying. Scholarships are offered through the CLSA Education Foundation in memory of Bill Young, a dedicated professional and mentor who contributed greatly to the advancement of our profession throughout his 50 year career.

HOSTED BY
Riverside / San Bernardino &
Desert Chapters of the California
Land Surveyors Association

FLYER w/ Details

CLSA Webinar: Integrated Surveying for Maximum Productivity - Robert Green
May
10
11:00 am11:00

CLSA Webinar: Integrated Surveying for Maximum Productivity - Robert Green

  • The Internet

REGISTER

Integrated Surveying for Maximum Productivity

Wednesday, May 10, 2017

11:00 AM - 12:00 Noon

Free for CLSA Members, $25 for non-members

Webinar Presenter: Robert Green - Vectors, Inc.

Webinar description: This session will describe seamless integrated survey workflows. My presentation will feature projects on which I have worked, that incorporate: VRS RTK data, terrestrial total station observations, scan data and panoramic photos into one file. The session will begin with an overview of the hardware used, including features and functionality. Integrated survey theory will be described, including GNSS data capture with simultaneous scanning and panoramic photo capture. Application examples will be discussed highlighting where these workflows can save you time, money, and manpower. The sessions will also describe processing in office software, including the benefits of utilizing Feature and Attribute libraries for simplified line work generation. An overview of surface creation and quality control inspection using exaggerated 3D views will be shown as well as various end deliverables such as panoramic photos in Google Earth, reports and spreadsheets.

Speaker Bio: As a 3rd generation surveyor, Bob began his career in 1973 working weekends and summers with his dad in Central New England. In 1978 Bob was employed by the BSC Group in Boston, Mass. where he gained his first insight into the world of GPS. In 1986 Bob moved to Colorado in search of new opportunities. He spent the next ten years in Southern CO working as a Crew Chief and part time for the Pueblo County Surveyors Office helping to bring the first GPS Geodetic Control Network to this part of the State. In 1992 Bob became registered as a Colorado Professional Surveyor. In 1996 Bob went into private practice specializing in Geodetic Control, Cadastral Retracement and Right-of-Way Surveys. Between 1998 and 2002 Bob was appointed to two consecutive terms to the Colorado State Board of Registration for PE and PLS Monitor Panel. In 2002 Bob was the recipient of a Presidential Citation from the Professional Land Surveyors of Colorado and the co-recipient of an American Council of Engineering Companies Award for a cadastral and R-O-W retracement survey in Southern Colorado. In April of 2003 Bob retired from surveying and accepted new challenges relocating his family to Central New Mexico where he currently holds the position of Geodetic Consultant at Vectors Inc, The Trimble survey dealer in NM and CO. Additionally, Bob has been a measurement consultant to the US Government. His missions include: Developing unique kinematic workflows on machine control GNSS receivers mounted to Amphibious Assault Vehicles for the USMC, layout of an Interferometer Vacuum Telescope for the USAF in conjunction with New Mexico Tech., a Geodetic Control Survey for a Lunar Laser Telescope and Astrohaven Facility for NASA at the Johnson Space Center and an Integrated Spatial Imaging Survey of a Drug Tunnel under the US/Mexican Border for USACE and US Border Patrol.

OCC Board Meeting
May
9
5:00 pm17:00

OCC Board Meeting

  • D. Woolley & Associates, Inc.

Monthly Chapter Board Meeting

Directors and officers/admin expected.

All others welcome, but please RSVP.

Virtual Access:   https://www.freeconferencecall.com/wall/techczar

PBC OC Joint Chapter Meeting with LA - Spk: Landon Blake
Apr
25
5:30 pm17:30

PBC OC Joint Chapter Meeting with LA - Spk: Landon Blake

  • Skylinks at Long Beach Golf Course

Our April OC Chapter Meeting features LANDON BLAKE, PLS.

Biography:Landon works as the Mapping Department Manager for Hawkins and Associates Engineering in Modesto, California. He has been surveying in the California Central Valley for the past 15 years. He specializes in surveys for large public works projects like roads, pipelines, dams, and canals. Landon lives with his wife Monique, his black Chiwawa "Pinky" and his imitation Blake Lab "Bella" in Stockton, California.

Topic:The traditional approaches to boundary surveys used by many land surveyors makes little business sense. They expose the surveyor to unnecessary risk of reduced profit or financial loss. In this short talk, we examine three (3) of these traditional approaches and discuss why they don’t work from a business perspective. We then consider what land surveyors can learn about improving their profit performance on boundary services by looking at the way other small business people approach their work. The speaker then presents an approach he uses to improve his profit performance on boundary surveys: phasing. This discussion includes the reasons to phase a project, the project types that are best suited to phasing, and tips for how to phase a project.

Dinner will be Mexican style buffet.

RSVP: https://docs.google.com/forms/d/e/1FAIpQLSdHFxE_HBSYt8akR0k6eBq9sB9YCMtItCWI0_pIiakST9NJKQ/viewform?usp=sf_link

PRE-PAY: HTTPS://SQUAREUP.COM/MARKET/OC-CLSA/ITEM/MEETING-REGULAR?T=MODAL-EM

Members: $30 // Non-Members: $40 // Students: $25

Checks Payable to: ORANGE COUNTY CLSA

Mail: PMB 201, 13681 NEWPORT AVE., SUITE 8, TUSTIN, CA 92780

OCC JPPLC Meeting (Virtual)
Apr
19
12:00 pm12:00

OCC JPPLC Meeting (Virtual)

  • https://www.freeconferencecall.com/wall/techczar

https://www.freeconferencecall.com/wall/techczar

If you are not an official member, please e-mail to RSVP for attendence: jpplc@oc-surveyors.org.

CLSA Webinar: The Sinking Feeling - Subsidence for Surveyors
Apr
12
11:00 am11:00

CLSA Webinar: The Sinking Feeling - Subsidence for Surveyors

  • The Internet

REGISTER

 

That Sinking Feeling – Subsidence for Surveyors

Kimberley Holtz is a licensed Land Surveyor and Geologist in the State of California with over 30 years of experience in land surveyoring working for both the Private and Public sectors.  Kimberley has been involved in GPS/GNSS since the 1990’s and for the last 9 years she has been using GPS/GNSS to measure subsidence in the Wilmington Oil field for the City of Long Beach Gas & Oil Department.  She will be discussing the methods she uses to measure subsidence and the results they are receiving. Kimberley will also be discussing other areas in California that experience subsidence and what surveyors need to know when working in these areas.

Workshop: DETERMINING PROPERTY CORNER HISTORY & ASSESSING AND COMMUNICATING BOUNDARY SURVEY RISK
Apr
7
8:30 am08:30

Workshop: DETERMINING PROPERTY CORNER HISTORY & ASSESSING AND COMMUNICATING BOUNDARY SURVEY RISK

  • La Palma, CA

Landon Blake has been surveying in Central California and Western Nevada for over 15 years. He specializes in surveying to support the design and maintenance of large infrastructure projects.

The first part of the workshop is entitled "Determining Property Corner History". In this first part of the workshop you will learn how to determine property corner history as part of a boundary survey. This includes a discussion of the differences between original monuments and retracement monuments, learning how to evaluate different types of corner location evidence, and how to handle gaps in property corner history. The second part of the workshop is entitled "Assessing and Communicating Risk in Boundary Surveys". In this second part of the workshop you will learn about the 3 types of risk in a boundary survey, the 9 sources of this risk, and factors that accelerate this risk. You'll also find out about methods to quantify risk in your boundary surveys and ways to communicate this risk to your clients.

WHAT YOU WILL LEARN

How our legal system treats original monuments and retracement
monuments.
The 6 step process to determine property corner history.
The 4 factors that accelerate risk in a boundary survey.
Best practices for communicating boundary survey risk to your clients.
Example map notes you can use to communicate risk.

$149 For CLSA Members $199 Regular

http://www.redefinedhorizons.com/printingpress/workshop-program-assessing-communicating-boundary-survey-risk/

LCSO Geospatial Symposium
Apr
6
8:45 am08:45

LCSO Geospatial Symposium

  • RIVERSIDE COUNTY FLOOD CONTROL

SEATING IS LIMITED, PLEASE RESPOND BY: FRIDAY, MARCH 31, 2017

CHECKS PAYABLE TO: LEAGUE OF CALIFORNIA SURVEYING ORGANIZATIONS

MAIL TO: RIVERSIDE COUNTY FLOOD CONTROL

1995 MARKET ST, RIVERSIDE, CA 92501

ATTN: DANIEL CUNNINGHAM (dacunnin@rivco.org or 951.955.1344)

DATE: THURSDAY, APRIL 6, 2017   TIME: 8:45 A.M. TO 3:30 P.M.

FEE: $50.00 (LUNCH INCLUDED)

https://drive.google.com/file/d/0ByZPpC12H--xZzdGQkIxUV9ucm9qT2tkM0FyS1NUaGloekk0/view?usp=sharing

OCC Chapter Meeting (County Surveyor Night)
Feb
28
5:30 pm17:30

OCC Chapter Meeting (County Surveyor Night)

  • JT Schmid's Restaurant & Brewery

Our February OC Chapter Meeting features the County Surveyor (Kevin Hills) and staff presenting an update on what's new and what's upcoming at your County Survey offices.

Come show your support for a truly great County Surveyor who is active in our association (e.g. he's one of your Chapter Directors) and really adds to the profession through his contributions of time and ideas.

RSVP: https://goo.gl/forms/uF7f3gEZHS8m60OA2

Pre-Pay: https://squareup.com/market/oc-clsa/item/meeting-regular?t=modal-em

Members: $30 // Non-Members: $40 // Students: $25
Checks Payable to: ORANGE COUNTY CLSA
Mail: PMB 201, 13681 NEWPORT AVE., SUITE 8, TUSTIN, CA 92780

OCC JPPLC Meeting (Online/Phone Access Available)
Feb
15
12:00 pm12:00

OCC JPPLC Meeting (Online/Phone Access Available)

  • KDM Meridian

This will be the first meeting of the re-organized JPPC (now JPPLC to include the Legislative Committee)

These meetings will be generally the 3rd Wed of the month and either across the lunch hour+ or in the evening.

1. Dial into the conference:
   Dial-in Number: (515) 604-9625 - United States
   Access Code: 143886
2. Join the online meeting:
   Online Meeting Link: https://join.freeconferencecall.com/techczar
   Online Meeting ID: techczar

Instructions:
At the scheduled date and time of the meeting, dial into the conference line. When prompted, enter the Access Code followed by the pound key.
To join the online meeting, click on the meeting link listed above and follow the prompts to join the meeting.

Please don't try and run audio on both phone and computer. Turn off the computer audio if you will also be on the phone.

An RSVP for in-person participation is REQUIRED. You may contact techczar@oc-surveyors.org for this meeting to RSVP.

Survey/Mapping Sciences Classes - Santiago Canyon College - Spring 2017
Feb
13
8:00 am08:00

Survey/Mapping Sciences Classes - Santiago Canyon College - Spring 2017

  • Santiago Canyon College

What is a Surveyor?

Surveyors and Mapping Technicians use surveying, engineering, and scientific data to determine and identify fixed points or boundaries; prepare maps for legal and design purposes; and provide data relevant to the shape, contour, gravitation, location, or dimension of land or land features for construction, mining, land evaluation, and other purposes.  Surveyors use GPS (Global Positioning Systems) and GIS (Geographical Information Systems) in their work.  Work is outdoors using the surveying equipment in the field as well as in offices using computers and filing reports.

How can I become a Surveyor?

The successful graduate of the Santiago Canyon College Survey and Mapping Sciences program will have the technical expertise necessary for an entry level position in the fields of Geographic Information Systems, Land Surveying, and Digital Photogrammetry. The program also assists those students preparing for the State Land Surveyor-In-Training and, after the required work experience, the Land Surveyor Exams. The State Board of Registration for Professional Engineers and Land Surveyors will grant one year of the required work experience credit for students completing an Associate Degree Survey and Mapping Sciences.

https://www.sccollege.edu/Departments/CareerEd/Survey/Pages/SurveyDegreePrograms.aspx

CLSA Webinar: Navigating the Legal Maze of Drones
Feb
8
11:00 am11:00

CLSA Webinar: Navigating the Legal Maze of Drones

  • The Internet

Drone Mapping and the Land Surveying Profession
Webinar Presenter: Stephen Gowdy, Chief Pilot

https://attendee.gotowebinar.com/register/2443220769936013313

Presentation Overview: 

  • The effect of a disruptive technology on an existing market and revenue stream 
  • The Unmanned Aerial Systems (UAS) the ultimate disruptive technology 
  • Specific examples of UAS mapping and surveying that can assist the Professional Surveyor 
  • UAS and the FAA Operational Regulations and how it effects the Profession Surveyor 
  • Section 333 to Part 107 
  • Part 107 Rules 
  • Part 107 Waivers 
  • UAS Insurance considerations 
  • Steps and business models a Professional Surveyor can take to protect their business and grow it using UAS technology 
  • Q & A
CLSA Board of Directors Meeting (AGENDA & ADDENDUM)
Feb
4
9:00 am09:00

CLSA Board of Directors Meeting (AGENDA & ADDENDUM)

  • Holiday Inn Oakland Airport

Please click the link below to download the Agenda for the February 2017 CLSA Board of Directors Meeting: AGENDA

Please click the link below to download the Addendum to the Agenda for the February 2017 CLSA Board of Directors Meeting: ADDENDUM

For OC Chapter members, your directors met 1/21/17 to discuss the agenda and the chapter's interests. Please contact <ocdirectors@oc-surveyors.org> if you wish to have any input.

Fresno State 56th Annual Geomatics Conference
Jan
27
Jan 28

Fresno State 56th Annual Geomatics Conference

  • DoubleTree By Hilton Fresno

Since 1961, Fresno State’s Geomatics Engineering Clubs have partnered with the surveying industry, the community, faculty and other Geomatics Engineering/Photogrammetry and Remote Sensing related businesses and agencies to host this annual celebration of the Surveying profession.  By recognizing our past, present and future and connecting students to alumni, industry professionals and researchers, students will have the opportunity to discover the world of Geomatics Engineering through the eyes of the professional.
The conference focuses on a variety of areas such as land surveying, photogrammetry, unmanned aerial systems, geographical information systems (GIS), and global positioning systems (GPS).  Nearly 20 guest speakers from industry, government and academia will speak about a variety of topics. Numerous scholarships will be awarded to Lyles College of Engineering.  More than $1 million in scholarships have been awarded at this annual conference over the years. Several vendors also will be exhibiting the latest technologies in GIS, surveying and more.
Register below for this 56th annual student-run conference and banquet featuring a roast in honor of Dr. James K. Crossfield for his integral contributions to the Geomatics Engineering program at Fresno State and the Land Surveying profession as a whole!  We encourage students and professionals to come and network, learn from exhibitors, participate in raffles and auctions, and enjoy learning about the trends, developments, and the profession of Geomatics Engineering!
After January 13th, 2017, attendees must register at the door.

For information about the Geomatics Engineering Program at Fresno State, please visit here.

Chapter Meeting: Past Presidents' Night
Jan
24
5:30 pm17:30

Chapter Meeting: Past Presidents' Night

  • JT Schmid's - Anaheim

Join us as we honor and thank our past chapter presidents.

There will be an introduction of our 2017 President and Executive Board including our record demolishing 11 Chapter Directors, representing the Orange County Chapter members. 

Finally, recognition of our outgoing President, Mr. Daryl Christian.

5:30 registration, 6:30-7:00 dinner start

https://squareup.com/market/oc-clsa/item/meeting-regular?t=modal-em

RSVP Here: https://goo.gl/forms/93IOgJV9SogDubGk1

 

 

 

 

CLSA Webinar: GIS for Surveyors
Jan
18
11:00 am11:00

CLSA Webinar: GIS for Surveyors

  • The Internet

https://attendee.gotowebinar.com/register/4681846235296769537

 

This session will preview how you can import your surveying data into a Web GIS system using Microsoft Office technology and standard GIS data products. The goal of this session will be to provide you with a better understanding about web GIS platforms and how they can be utilized to aid in sharing complex surveying information. The session will include live demonstrations along with tips and advice on how to utilize web GIS capabilities relating to land surveying. A follow-up, full-day workshop on GIS for Surveyors will be offered at the 2017 CLSA Conference. 

 

Webinar Presenter: Ryan Hunsicker, PLS, GISP

OC-CLSA Holiday Casino Night
Dec
15
6:00 pm18:00

OC-CLSA Holiday Casino Night

  • JT Schmid's (Anaheim)

This December is our last meeting of the year and it’s going to be a blow-out!
This is our annual Holiday Casino Night! Come on out and start off the Season by trying your luck at all the Vegas style games we have to offer. This is always an exciting event, with plenty of great prizes.

FLYER

Admission includes dinner which will be served at 6:30 & Casino Money.
$50/person or $80/couple with $500 per person Casino Money!
$200/ table sponsorship (2 admissions and $4,000 Casino Money!)

Please RSVP only at: Google Form Link
RSVP & Pre-Pay Attendance at: Store Link
RSVP & Pay Table Sponsorship at: Store Link

WE ARE LOOKING FOR TABLE SPONSORSHIPS!
CONTACT JOE PADILLA FOR ADDITIONAL INFORMATION.
past-president@oc-surveyors.org

CLSA Webinar: Phasing Boundary Surveys
Dec
14
11:00 am11:00

CLSA Webinar: Phasing Boundary Surveys

  • The Internet

Time: Wednesday, 11:00 AM - 12:00 Noon
Register at GoToWebinar here

The traditional approaches to boundary surveys used by many land surveyors makes little business sense. They expose the surveyor to unnecessary risk of reduced profit or financial loss. In this seminar we examine three (3) of these traditional approaches and discuss why they don’t work from a business perspective. We then consider what land surveyors can learn about improving their profit performance on boundary services by looking at the way other small business people approach their work. The speaker then presents an approach he uses to improve his profit performance on boundary surveys: phasing. This discussion includes the reasons to phase a project, the project types that are best suited to phasing, and tips for how to phase a project. The seminar concludes by walking the audience through an example project and discussing how to propose on the project so that a phased boundary survey can be used.

Webinar Presenter: Landon Blake
Landon works as a land surveyor in the Central California and Western Nevada. He is licensed in California and Nevada. He is a Certified Federal Surveyor. He attended the land surveying program at Flathead Valley Community College where he graduated with an AAS in land surveying. Landon currently works as the Mapping Department Manager for Hawkins and Associates Engineering in Modesto, California. Landon serves as the volunteer editor of the California Surveyor Magazine (publication of the California Land Surveyors Association) and is a member of the CLSA Orange County Chapter. Landon also participates in the California Geodetic Control Working Group and maintains the California Central Valley Survey Control Network.

OC-CLSA Chapter Meeting - Scholarship Night & The Future of Land Surveying
Nov
17
5:30 pm17:30

OC-CLSA Chapter Meeting - Scholarship Night & The Future of Land Surveying

  • JT Schmid's (Anaheim)

Scholarship Night & The Future of Land Surveying (Michael Pallamary, PLS)

Last year we had quite the crowd for this meeting!

To help plan and arrange space, please be sure to RSVP.

We've made a simple Google Form to do this with, so please ...  RSVP-HERE ... if you can't use that, just e-mail our Secretary and let them know!

Michael Pallamary, PLS is a staunch advocate of “economic adaptation.”  His seminal paper “Measurement is Dead,” provides a sobering analysis on the future of land surveying.  Mr. Pallamary will discuss innovative ways to survive in a rapidly changing economy while maintaining a healthy profit margin. 

Michael Pallamary, PLS, is the president of Pallamary & Associates, a La Jolla, CA based land surveying and land use company.  Mr. Pallamary has been surveying since 1971.  He started his first business in 1981 when he formed Precision Survey & Mapping.  Mr. Pallamary sold his 12-person firm in 2000 to a large multi-discipline firm where he managed 45 people.  He returned to self-employment as a principle in 2001 when he formed PAA.  Mr. Pallamary works across the State of California and he is a well-respected business person as well as a nationally renowned Land Surveyor.

 

 

CLSA Webinar: Network RTK Systems in California
Nov
16
11:00 am11:00

CLSA Webinar: Network RTK Systems in California

  • The Internet

Register

Traditionally, in RTK (Real Time Kinematic) GPS (Global Positioning System), rovers receive RTK data from a single RTK reference station. Nonetheless, as the distance increase between the stations, range measurements become more and more uncorrelated and this limits the ability to resolve the atmospheric and orbital errors. To overcome this drawback, Network RTK concept has been developed. In Network RTK rather than only base station and rover(s), as the name indicates, there are network of reference stations. These reference stations continuously stream GNSS (Global Navigation Satellite System) data to central server running Network RTK software and these measurements are used to generate corrections for the region ideally encompassed by the reference stations using advanced interpolation techniques. It means that Network RTK covers larger area and still maintains the same level of performance. In this presentation, after going through four RTK corrections, namely, MAX, I-MAX, VRS and FKP, Network RTK systems in California will be shown.

Webinar Presenter: Dr. Mike Mustafa Berber, P. Eng.

Received both his Bachelor and Master’s degrees from Yildiz Technical University, Istanbul, Turkey. He got his PhD at Geodesy and Geomatics Engineering, University of New Brunswick, New Brunswick, Canada. Following his graduation, he joined Department of Civil Engineering at Ryerson University, Ontario, Canada. After having seven long winters in Canada, he moved to Florida and worked as an Assistant Professor at Florida Atlantic University. He has been a faculty member of Department of Civil and Geomatics Engineering at California State University, Fresno since 2014. His expertise is in Geodesy, Global Navigation and Satellite System, Geodetic Measurement Techniques and Hydrographic Surveying.