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DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.
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DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

Jan 01, 2016

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Page 1: DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

DPUG Meeting – May 16, 2013

Jerry Corr

Elizabeth Crawley

Habitat Management, Inc.

Page 2: 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

Page 3: DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

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

Page 4: DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

GCDB Geoprocessing Issue• GCDB Mismatches between Big Horn and Johnson counties

Page 5: DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

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

Page 6: DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

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.

Page 7: DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

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

Page 8: DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

T 1N R 66W

Ft. Lupton

Page 9: DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

Decade # of Records1970 81980 171990 212000 22010 1

https://doraimage.state.co.us/L:Hkq3WH1Y0j12N1ZH/

Page 10: DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

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

Page 11: DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.
Page 12: DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

40 ft

Page 13: DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

Oil/Gas WellsFt. Lupton

Page 14: DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

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

Page 15: DPUG Meeting – May 16, 2013 Jerry Corr Elizabeth Crawley Habitat Management, Inc.

Questions

Elizabeth Crawley, Habitat Management, IncEmail: [email protected]

Robert White, WhiteStarEmail: [email protected]