Arizona Height Modernization Program AZHMP Dave Minkel NGS

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

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

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

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

1967 - 1980; Elevation Change DU 01050 -2. 302 ft DU 01051 -2. 282 ft 0. 73 m ile s 2006 – Elevation Change (error) could be double, i. e. -4. 604 ft & -4. 564 ft, from published 1980 elevation (last year of leveling)

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

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/

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

AZHMP 10 -Year Plan

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 (FY 06 Funding) – Establish AZCORS

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

Do You Need a HM Grant to Move Forward? • Gila County – Approximately 122 Stations set – FEMA partnership on Tonto Basin saved ~ $265 K – 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