montana height modernization curt smith national geodetic survey idaho phone: 208-332-7197 montana...
TRANSCRIPT
![Page 1: Montana Height Modernization Curt Smith National Geodetic Survey Idaho Phone: 208-332-7197 Montana Phone: 406-444-0989 Curt.Smith@noaa.gov State of Vertical](https://reader035.vdocuments.net/reader035/viewer/2022062300/56649ce35503460f949af877/html5/thumbnails/1.jpg)
MontanaHeight
ModernizationCurt SmithNational Geodetic SurveyIdaho Phone: 208-332-7197Montana Phone: [email protected]
State of Vertical Control
![Page 2: Montana Height Modernization Curt Smith National Geodetic Survey Idaho Phone: 208-332-7197 Montana Phone: 406-444-0989 Curt.Smith@noaa.gov State of Vertical](https://reader035.vdocuments.net/reader035/viewer/2022062300/56649ce35503460f949af877/html5/thumbnails/2.jpg)
Heights Matter!
![Page 3: Montana Height Modernization Curt Smith National Geodetic Survey Idaho Phone: 208-332-7197 Montana Phone: 406-444-0989 Curt.Smith@noaa.gov State of Vertical](https://reader035.vdocuments.net/reader035/viewer/2022062300/56649ce35503460f949af877/html5/thumbnails/3.jpg)
DESCRIPTION: The Santa Clara River flows past destroyed homes and a fallen tree in the Creek side subdivision Wednesday in St. George. Seven homes in the subdivision were completely lost to the river and at least another four were severely damaged by this week's flooding. CREDITS: Jud Burkett COPYRIGHT: The Spectrum
Southern Utah Flooding 1/12/2005
![Page 4: Montana Height Modernization Curt Smith National Geodetic Survey Idaho Phone: 208-332-7197 Montana Phone: 406-444-0989 Curt.Smith@noaa.gov State of Vertical](https://reader035.vdocuments.net/reader035/viewer/2022062300/56649ce35503460f949af877/html5/thumbnails/4.jpg)
DESCRIPTION: A row of damaged homes in Riverwood subdivision cling to the banks of the Santa Clara River Thursday in St. George.
CREDITS: Jud Burkett COPYRIGHT: The Spectrum
Southern Utah Flooding 1/12/2005
![Page 5: Montana Height Modernization Curt Smith National Geodetic Survey Idaho Phone: 208-332-7197 Montana Phone: 406-444-0989 Curt.Smith@noaa.gov State of Vertical](https://reader035.vdocuments.net/reader035/viewer/2022062300/56649ce35503460f949af877/html5/thumbnails/5.jpg)
North Carolina Floodplain Mapping
2002 Detail Mapping vs.
Effective Approximate
Mapping
![Page 6: Montana Height Modernization Curt Smith National Geodetic Survey Idaho Phone: 208-332-7197 Montana Phone: 406-444-0989 Curt.Smith@noaa.gov State of Vertical](https://reader035.vdocuments.net/reader035/viewer/2022062300/56649ce35503460f949af877/html5/thumbnails/6.jpg)
Poured in place concrete post
1954
Stainless steel rod driven to refusal
1980’s
PhysicallyMonumented
Points
![Page 7: Montana Height Modernization Curt Smith National Geodetic Survey Idaho Phone: 208-332-7197 Montana Phone: 406-444-0989 Curt.Smith@noaa.gov State of Vertical](https://reader035.vdocuments.net/reader035/viewer/2022062300/56649ce35503460f949af877/html5/thumbnails/7.jpg)
Current Survey Control
NGS Data Sheetwww.ngs.noaa.gov
![Page 8: Montana Height Modernization Curt Smith National Geodetic Survey Idaho Phone: 208-332-7197 Montana Phone: 406-444-0989 Curt.Smith@noaa.gov State of Vertical](https://reader035.vdocuments.net/reader035/viewer/2022062300/56649ce35503460f949af877/html5/thumbnails/8.jpg)
![Page 9: Montana Height Modernization Curt Smith National Geodetic Survey Idaho Phone: 208-332-7197 Montana Phone: 406-444-0989 Curt.Smith@noaa.gov State of Vertical](https://reader035.vdocuments.net/reader035/viewer/2022062300/56649ce35503460f949af877/html5/thumbnails/9.jpg)
NGS Bench Marks
![Page 10: Montana Height Modernization Curt Smith National Geodetic Survey Idaho Phone: 208-332-7197 Montana Phone: 406-444-0989 Curt.Smith@noaa.gov State of Vertical](https://reader035.vdocuments.net/reader035/viewer/2022062300/56649ce35503460f949af877/html5/thumbnails/10.jpg)
Disturbed Geodetic ControlCoordinates/Elevations
Questionable
Destroyed Geodetic ControlNo Coordinates/Elevation
Monumented PointsDeterioration
![Page 11: Montana Height Modernization Curt Smith National Geodetic Survey Idaho Phone: 208-332-7197 Montana Phone: 406-444-0989 Curt.Smith@noaa.gov State of Vertical](https://reader035.vdocuments.net/reader035/viewer/2022062300/56649ce35503460f949af877/html5/thumbnails/11.jpg)
USGS Topographic Map
F 143 Not recovered (destroyed)
E 143 Not recovered (destroyed)
D 143 Not recovered (destroyed)
C 143 Not recovered (destroyed)
![Page 12: Montana Height Modernization Curt Smith National Geodetic Survey Idaho Phone: 208-332-7197 Montana Phone: 406-444-0989 Curt.Smith@noaa.gov State of Vertical](https://reader035.vdocuments.net/reader035/viewer/2022062300/56649ce35503460f949af877/html5/thumbnails/12.jpg)
2nd Order Vertical1st Order Vertical
684 - Total Vertical Control Points Listed
Lewis and Clark County Vertical Control Pointsin NGS Database
![Page 13: Montana Height Modernization Curt Smith National Geodetic Survey Idaho Phone: 208-332-7197 Montana Phone: 406-444-0989 Curt.Smith@noaa.gov State of Vertical](https://reader035.vdocuments.net/reader035/viewer/2022062300/56649ce35503460f949af877/html5/thumbnails/13.jpg)
Lewis and Clark County Vertical Control Points in NGS Database
684 - Total Vertical Control Points Listed
176 (25.7%) – Missing 65 - Reported as Destroyed111 - Reported as Not Found
508 (74.3%) – Possible Vertical Control Points146 – Total Monumented (no recovery notes)
20 – Reset 1 – Set Within Last 10 Years
362 (52.9%) – Total Recovered in Good Condition112 – Recovered for NAVD88 (after 70’s) 64 – Recovered Good Within Last 10 Years