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Arizona Height Modernization Program - AZHMP
Dave MinkelNGS Geodetic Advisor to ArizonaGeospatial 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
DU01050 -2.302 ft
DU01051 -2.282 ft
0.73 miles
1967 - 1980; Elevation Change
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 (FY06 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 ~
$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