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Arizona Height Modernization Program: Enhancing Geospatial Accuracy and Network Reliability

The Arizona Height Modernization Program (AZHMP) is an initiative aimed at addressing vertical control network issues in Arizona by securing a height modernization grant. With the last campaign leveling conducted in 1992, many existing marks are outdated or inaccurate, impacting GIS data and land development planning. This presentation outlines the motivation behind pursuing the grant, the planned activities, long-term goals, and expected public benefits. It emphasizes collaboration with federal, state, and local agencies to establish a comprehensive GPS statewide network and support community needs.

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Arizona Height Modernization Program: Enhancing Geospatial Accuracy and Network Reliability

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Presentation Transcript

  1. Arizona Height Modernization Program - AZHMP Dave Minkel NGS Geodetic Advisor to Arizona Geospatial Professional, APLS

  2. Presentation Outline • Why Did We Pursue a Height Mod Grant? • Problems with the Network • Additional Benefits Expected • How Did We Get an HM Grant? • Activities • Documents • What Do We Plan to Do Under AZHMP? • Long-term Plan • Near-term Plan • Long-term Plan for AZHMP

  3. Why Did AZ Pursue a Height Mod Grant? • Vertical Control Network Issues • Dated • Latest “Campaign” Leveling in 1992 • Not All Marks are NAVD 88

  4. Why Did AZ Pursue a Height Mod Grant? • Vertical Control Network Issues • Dated • Latest “Campaign” Leveling in 1992 • Not All Marks are NAVD 88 • Subsidence

  5. 1967 - 1980; Elevation Change DU01050 -2.302 ft DU01051 -2.282 ft 0.73 miles 2006 – Elevation Change (error) could be double, i.e. -4.604 ft & -4.564 ft, from published 1980 elevation (last year of leveling)

  6. Why Did AZ Pursue a Height Mod Grant? • Vertical Control Network Issues • Dated • Latest “Campaign” Leveling in 1992 • Not All Marks are NAVD 88 • Subsidence • Sparse Where We Need It • Development = Bulldozers = Lost Marks • Additional Benefits • Tie the PLSS to the Network • GDACS Project

  7. How Did AZ Get a HM Grant? • Activities • HM Forum in 2004 • Congressional Delegation Briefings • AZ State Cartographer & Private Sector Representatives • Local and D.C. Offices Visited • Consider Congressional Schedule • Documents • AZHMP 3-Ring Binder • Discuss APPLICATIONS & BENEFITS to the Public, not what you’re going to do! • AZHMP 1-Pagers (Leave Behinds) • 10-Year Plan • AZHMP Web Site • http://agic.az.gov/hm/

  8. What Do We Plan to Do Under AZHMP? • Long-term (10-Year) Plan • Arizona Spatial Reference Center • AZCORS (CORS/COBS) • GPS Statewide Network (≈ 3800 stations) • Uses GDACS Model (i.e. near PLSS Corners) • Leveling • Analysis of Network • Leveling • Support/Research

  9. AZHMP 10-Year Plan

  10. What Do We Plan to Do Under AZHMP? • Long-term (10-Year) Plan • Arizona Spatial Reference Center • AZCORS (CORS/COBS) • GPS Statewide Network (3800 stations) • Leveling • Analysis of Network • Leveling • Support/Research • Near-term Plan (FY06 Funding) • Establish AZCORS

  11. Long-term Plan for AZHMP • Build Partnerships with Federal, State and Local Agencies • Utilize Partner Resources to Implement AZHMP and Gain Additional Program Support • Seek Additional Funding Sources • FEMA Grant(s) • Demonstrate and Document Public Benefits of AZHMP • Migrate AZHMP from Grant-based Funding to State Programmatic Funding

  12. Do You Need a HM Grant to Move Forward? • Gila County • Approximately 122 Stations set • FEMA partnership on Tonto Basin saved ~ $265K – 30 sq. mi. • 28% savings on aerial mapping costs • Cochise County • Approximately 138 Stations Set • Requiring ties to network for County GIS • 38 Stations in Last Survey • 2 Companies Turned Down

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