Developing a Digital Cadastral Map for Fish and Wildlife Commission Land Parcels


Material Information

Developing a Digital Cadastral Map for Fish and Wildlife Commission Land Parcels
Physical Description:
Grant proposal
Barnes, Grenville
Aufmuth, Joe
George A. Smathers Libraries, University of Florida
Place of Publication:
Gainesville, Fla.
Publication Date:


Dates or Sequential Designation:
October 1 – December 31, 2012
Issuing Body:
Fish and Wildlife Commission
Pending notification

Record Information

Source Institution:
University of Florida Institutional Repository
Holding Location:
University of Florida
Rights Management:
All rights reserved by the source institution and holding location.
System ID:

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Dr. Grenville Barnes – Geomatics Program – University of Florida 1 PROPOSAL Developing a Digital Cadastral Map for FWC Land Parcels Agency: Fish and Wildlife Commission (FWC) Duration: October 1 – December 31, 2012 1. Purpose This project will build a digital cadastral map of the 118 land polygons (each incorporating multiple parcels) using the legal descriptions on the deeds used to acquire this land to be incorporated into a state wide information system. This will be geo referenced where possible, but there is no requirement to include point or line attributes, such as monument descriptions, calls for adjoiners, or measurements to witness monuments. 2. Background Senate Bill 1516 requires that all state agencies develop an on line inventory of their land which will be integrated into a state wide information system known as FL SOLARIS (LITS). Initially, only land acquired in fee simple will be input into the system. This will enable state agencies to better manage their resources and to answer spatial or location based queries. Currently the boundaries of all FWC property polygons are described in the legal descriptions that are part of the deed that transferred the land to them. These legal descriptions are in different forms, but for the most part1 are made up of (a) Public Land Survey System (PLSS) descriptions (Township/Range/Section), (b) aliquot parts descriptions (e.g. NW1/4 of the SE1/4 of Section 5), (c) metes and bounds descriptions connected to section or section corners of the PLSS, or (d) metes and bounds descriptions that are not linked to the PLSS.3. Approach The process proposed for this project is outlined in Figure 1 below. This process differs depending on the type of legal description used for a particular polygon. The challenge of compiling a consistent cadastral map of the FWC properties is not unlike putting together a jigsaw puzzle, where each puzzle piece is an individual legal description. The puzzle problem is made easier by creating a frame for the pieces (usually the edge pieces) and in the cadastral context the PLSS can serve this role. However, the PLSS was surveyed before the introduction of a state wide coordinate system and so many of the PLSS monuments were never geo referenced and over time many have also been destroyed. We will rely on the best available geo referenced data for the PLSS which appears to be BLM’s GCDB (Geographic Coordinate Data Base).2 This has been developed from several sources, including GLO plats, quad sheets, etc. Where issues arise with this data we will also investigate the data in the certified corner records 1 This is based on a sample of five deed descriptions that were provided to me and on descriptions typically encountered in Florida 2 en/prog/more/gcdb.html


Dr. Grenville Barnes – Geomatics Program – University of Florida 2 (CCR), particularly those that have been referenced to the state plane coordinate system, which is available through Labins.3 3.1 PLSS Descriptions For simple PLSS descriptions (sections or sections) we will extract these from BLM’s GCDB database for Florida. AutoCad will be used to compute the coordinate geometry of sections. 3.2 PLSS Aliquot Parts Descriptions For Aliquot part descriptions that further break down the original PLSS units we will use coordinate geometry (CoGo) in AutoCad to define these boundaries following the rules stipulated by the BLM. 3.3 Metes and Bounds Descriptions Linked to PLSS For those metes and bounds descriptions that connect to the PLSS (either as an integral part of the parcel or as a point of commencement POC), we will use the GCDB based coordinate data to geo reference the parcel. Since only the parcel or polygon boundaries are required we will extract any POC links that do not form part of the parcel. However, if there is only one link to a single PLSS corner, there will be no guarantee that the parcel corners are not rotated as bearings were not always referenced to true or magnetic north, but were often just based on an existing local line and bearing. Such extractions will be reflected in the metadata provided with the shape files. 3.4 Unconnected Metes and Bounds Descriptions Metes and bounds descriptions that are totally unconnected to the PLSS will be difficult to geo reference. If possible, we will try and use adjoining FWC parcels to connect to the PLSS. If this is not possible we will draw on county level parcel databases such as the tax map maintained by county appraisers. 3


Dr. Grenville Barnes – Geomatics Program – University of Florida 3 4. Methodology FIGURE 1. Proposed Processes for Different Types of Legal Descriptions Compile, review and organize legal descriptions Metes and Bounds Descriptions not linked to PLSSS PLSS Descriptions Metes and Bounds Descriptions linked to PLSS Build Aliquot Parts In AutoCad (e.g. NW of SW ) Build Parcel Boundaries in AutoCad Convert each polygon to shape file format CoGo boundaries using AutoCad Check closure of description Check closure of description CoGo boundaries using AutoCad and Section Cnr Coords Plot AutoCad file and verif y correctness Send to FWC Resolve Problems Extract relevant section corner coords Download BLM’s FGDC shape files for FL Project FGDC shapefiles and develop a point database of section corners PLSS Aliquot Parts Descriptions Merge Parcels to form FWC Polygon Boundaries in AutoCad Extract relevant section corner coords Merge Parcels to form FWC Polygon Boundaries in AutoCad Extract relevant section corner coords Geo reference


Dr. Grenville Barnes – Geomatics Program – University of Florida 4 5. Deliverables The deliverables in this project are a shape file of the perimeter of each of the 118 FWC polygons together with metadata that describes how the polygons were geo referenced to the state plane coordinate system. It is our understanding that each polygon may in some cases be composed of several parcels (e.g. a parcel may be a single section and the polygon comprises several adjoining sections). 6. Responsibilities of FWC FWC will facilitate this work by providing the following: Scanned copies of all FWC properties to be included in this project will be provided prior to the start of the project Key contact person(s) who will be available to address issues that arise and require FWC input Clarify whether deliverable is a shape file of (i) each parcel (e.g. Section 34) or (ii) the perimeter of multiple parcels (e.g. Sections 34, 35, 36) in multi parcel polygons. 7. Personnel The team will be led by Grenville Barnes a Professor of Geomatics at the University of Florida with over 30 years experience in the cadastral field. He has taught the Cadastral Principles course which deals with legal descriptions and boundary evidence at the University of Florida for the past 20 years. He will coordinate the project and carry out quality control of the legal descriptions as well as deal with problems that arise. Joe Aufmuth the GIS Coordinator at the UF Map Library, has an MS in Civil Engineering (Geomatics concentration) and worked for 5 years as a GIS Consultant in the private sector in Florida and has more than 20 years experience working in the GIS field. He will provide technical support on all aspects of ArcGIS and metadata. Senior Geomatics undergraduate students, Neil Soule and Taylor Henninge will be responsible for the Coordinate Geometry work in AutoCad and producing the final shape files. Neil Soule worked this past summer on GIS and remote sensing at the FWRI office in Gainesville. Taylor Henninge worked in the summer for Banks Engineering doing AutoCad and field surveying work. Both have taken courses in AutoCad and cadastral principles.


Dr. Grenville Barnes – Geomatics Program – University of Florida 5 8. Time Frame We understand that the deadline for this work is December 31, 2012, and it is therefore imperative to start as soon as possible. We estimate the following number of hours per activity: Activity Hours Personnel Review Legal Descriptions and Other Documents 5+2 GB/JA Design of Processes 5+3 GB/JA Process Geo reference data from GCDB 5+5 GB/JA CoGo of legal descriptions in AutoCad (incl. georeferencing) 150+150 NS/TH Quality Control 15+5 GB/JA Metadata 25 JA Dealing with Problem descriptions, inconsistencies, etc 10 GB Coordination, Administration, Reporting, etc 25 GB Total 405 9. Budget Personnel Hrs $/hr Amount UF Contribution Grenville Barnes 65 60 3900 Joe Aufmuth 40 27 1080 Neil Soule (OPS) 150 10 1500 Taylor Henninge (OPS) 150 10 1500 Subtotal 405 6900 Fringe Grenville Barnes (23.2%) 905 Joe Aufmuth (23.2%) 251 Neil Soule (1.7%) 26 Taylor Henninge (1.7%) 26 Subtotal 956 Other Expenses Communications, copies, transport.. 300 Total Direct 8156 Overhead (10%) 816 TOTAL $8971 $1331


Proposed Budget for FWC Cadastral Projec t PersonnelHrs$/hr AmountUF Contribution Grenville Barnes 65603900 Joe Aufmuth40271080 Neil Soule (OPS)150101500 Taylor Henninge (OPS)150101500 Subtotal4056900 Fringe Grenville Barnes (23.2%)905 Joe Aufmuth (23.2%) 251 Neil Soule (1.7%)26 Taylor Henninge (1.7%)26 Subtotal956 Other Expenses Communications, copies, transport..300 Total Direct8156 Overhead (10%)816 TOTAL89711331