dpug meeting – may 16, 2013 jerry corr elizabeth crawley habitat management, inc
TRANSCRIPT
DPUG Meeting – May 16, 2013
Jerry Corr
Elizabeth Crawley
Habitat Management, Inc.
Overview• Why we undertook this project
• Need in Market to Improve Cadastral Data but• Limited Budgets
• Help Clients to Improve Land Maps• Find a Better, Faster, Cheaper Way to Improve Coordinates.• Survey Grade not Required• Identify Areas Where Survey is Required
Current Situation• Increasing Accuracy Requirements• Survey Data of Undefined or Insufficient Accuracy• 200 Year Old Documents• Survey Data Digitized from Topographic Maps• Well Locations Calculated from Footages / QQs• Lease Boundaries and Wells Aligned to Legacy Grids
GCDB Geoprocessing Issue• GCDB Mismatches between Big Horn and Johnson counties
Project Objectives• Is this a Feasible Idea?• Rapid Data Acquisition• Timely Data Acquisition• Improved Metadata
• Improve Schema Design• Photographs• Supplemental Information (State Board)• Corner Quality Information
Business Drivers• Need to Improve Data
• Fit to Imagery• Publish Maps with Ownership on “Right Side” of Street.• Establish Published Corners / Control Points on the Map.• Proper Schema• Photographs• Create a “Regulatory Grid”• Improve Data to Meet Increased Regulatory Spacing
Requirements.
Phase 1
Littleton:• Out of 49 section corners:• 7 found, 8 unidentified• Discrepancies between 6.5-80ft
East of Boulder• 39 wells• Discrepancies between 0.8-10.5ft• One was plugged and reclaimed
T 1N R 66W
Ft. Lupton
Decade # of Records1970 81980 171990 212000 22010 1
https://doraimage.state.co.us/L:Hkq3WH1Y0j12N1ZH/
Out of 49 section corners:• 30 found• 7 were calculated from witness monuments• Discrepancies between 8.324-103.15ft• Average discrepancy = 32.548ft• 11 out of 55 were outside the error of 40ft• 2 were double marked
Findings
40 ft
Oil/Gas WellsFt. Lupton
Findings• Number of wells used for the study: 49
• Discrepancy Range: 0.336-23.216ft
• Average Discrepancy = 6.564ft
• 20 wells that have been plugged
Questions
Elizabeth Crawley, Habitat Management, IncEmail: [email protected]
Robert White, WhiteStarEmail: [email protected]