New and Updated Data Posted at VCGI Web Site

July 16, 2014

waterbury_naip_20122012 NAIP Imagery

We would like to thank our data partners for working with us to help bring these data sets to you: The VT E-911 Board, FEMA, USDA, and USGS.

New! NAIP_1M_CLRIR_2012   - Color & Infrared (4 band) – Statewide NAIP (1m)
New! EmergencyE911_JBOUND  -E911 town boundaries data layer
EmergencyE911_TRAILS  -E911 trails data layer
EmergencyE911_HYDRANTS  -E911 Fire hydrants data layer
EmergencyE911_ALPINELIFTS  -E911 alpine ski lifts data layer
EmergencyE911_FOOTPRINTS  -E911 building footprints layer (limited set of buildings)
EmergencyE911_GDBE911  -All E911 data layers in File Geodatabase format (v10.2.2)
EmergencyE911_DW  -Driveways captured for E911 use
EmergencyE911_ESA  -E911 Emergency Service Agency Locations
EmergencyE911_ESITE  -E911 Site locations (buildings, hydrants, public phones, ..)
EmergencyE911_ESZ  -E911 Emergency Service Zone data layer
EmergencyE911_LANDMARKS  -Landmarks captured for E911 use
EmergencyE911_LKUPTABLES  -E911 lookup tables – tabular
EmergencyE911_RDS  -E911 Road centerlines from 1:5000 orthophotos and GPS
EmergencyE911_SHEETS  -E911 Atlas Map Sheets Boundaries
Some New! EmergencyFlood_DFIRMC  -FEMA Digital Flood Insurance Rate Map data (county-based)
EmergencyFlood_DFIRMT  -FEMA Digital Flood Insurance Rate Map data (town-based)
WaterHydro_WBD12VT  -VT Subwatershed boundaries (HUC12)
WaterHydro_WBD8VT  -VT Subbasin boundaries (HUC8)

Check them out here: http://vcgi.vermont.gov/warehouse/search_tools

If you have questions about any of these data layers, you can consult the metadata (more info button in the search results table), contact the data manager, or contact VCGI’s Database Administrator, Ivan Brown: ivanb@vcgi.org or 802-882-3005.


Vermont LiDAR Update – Summer 2014

July 3, 2014

Rutlandstatus

Mike Brouillette, VCGI

2-Foot Contours Almost Done: After engaging in a lot more troubleshooting/programming than I had originally expected, I am now confidently coasting toward processing the final (and fully tested!) Essex Data extent over the 4th of July long weekend. Essex was the toughest of them all and will require about 4 days to process. Next week it’ll be in the Database Administrators hands and I will ply him with coffee to get all 2’ contours from the major project areas posted as early as possible. I will forward an update at that time. This will complete “Phase I” as noted below and permit me to begin working on the smaller, existing data extents in “Phase III” while simultaneously working with the DBA on “Phase II”.

New LiDAR? The 2014 Spring data acquisition effort for the Grand Isle/Rutland County/Little & Mad river watersheds Area of Interest (AOI) sadly did not get completed due to the trifecta of late snow cover, followed by long periods of rainy/cloudy weather and topped off by a quick warm spell that propelled leaf-out a week ahead of “normal” (whatever that is). The photo above shows in light pink and yellow what was collected (Champlain Islands and Eastern Waterbury). The remainder (Mad River and Otter Creek areas) will be flown this fall.

Plans to Collect Even More Data? Efforts are underway to pursue the next data acquisition for spring 2015 (very small possibility it may be fall 2014 but don’t count on it), and it includes 1,746 square miles of Chittenden County and the final outstanding subbasin areas for the Vermont side of Lake Champlain. Subject to funding, more areas may be added but would be based on the funding sources priorities.

Thank you for all your feedback and constructive criticisms on various inconsistencies on the LiDAR web page and related documents. This helps me continually refine the information to the benefits all LiDAR data users – keep it coming.

What Has Come Before and The Plan for the Future:

Just a reminder that VCGI released the following LiDAR-based, “secondary” derivatives in May, i.e., ASPECT, HILSHD, nDSM and SLOPE data. These data were derived from the Addison, Bennington and Essex Counties and the Missisquoi Subbasin projects.

Definitions:

ASPECT:  Cardinal direction of slope from 0 to 360 degrees (East = 90, South = 180, West = 270 etc.)

HILSHD (Hillshade):  Models illumination of a surface from a light source at an azimuth of 315º and an altitude of 45º

nDSM:  “Normalized Digital Surface Model.”  DEM subtracted from the DSM – each pixel represents the height above ground, not above sea level.

SLOPE:  Change in elevation over the distance between the cell and its eight neighbors expressed in percent slope or percent grade, i.e., rise/run * 100.

The Plan:

To put this release into perspective of the overall VT LiDAR Initiative and its data related goals, a very brief overview of our approach to date follows. The fact that only 3 of the 8 steps are mostly complete belies the fact that Phase I involved a high level of effort in establishing protocols, guidelines and technical approaches that extend to subsequent phases.

PHASE I: (Includes 2012 Addison, 2012 Bennington and 2005 Essex Counties and the 2008/2010 Missisquoi Subbasin projects). These cover ~ 30% of the state.

1)      COMPLETE:                 Make “primary derivative” LiDAR data available on the VGIS, i.e., DEM and DSM, for the largest projects;

2)      COMPLETE:                 Make “secondary derivative” LiDAR data available on the VGIS, i.e., ASPECT, HILSHD, Ndsm and SLOPE for the largest projects;

3)      IN PROCESS (95%):  Integrate vendor provided 2’ contours, generate 2’ contours where needed to update the existing “ElevationContour_CN2T” data layer and make data available on the VGIS.

PHASE II: (Includes 2012 Addison, 2012 Bennington and 2005 Essex Counties and the 2008/2010 Missisquoi Subbasin projects). These cover ~ 30% of the state.

1)      IN PROCESS (25% JULY):  Process prototype of Contour, DEM and DSM data into feature and image services, respectively and make available on the VGIS.

2)      PLANNED (JULY/AUGUST):  Process all Phase I AOI’s to put Contour, DEM and DSM data into feature and image services, respectively and make available on the VGIS.

PHASE III: (Includes 2007 Bennington, Chittenden, Rutland & Washington flood plains, 2009 Barre-Montpelier, 2010 Bennington flood plains and 2012 VTrans-TSIrene projects). These cover ~6.8% of the state but not exclusive of larger projects, e.g., 2012 Bennington County vs. 2007 & 2010 Bennington floodplains.

1)      PLANNED (JULY/AUGUST):            Make “primary derivative” LiDAR data available on the VGIS, i.e., DEM and DSM, for the largest projects;

2)      PLANNED (AUGUST/SEPT) :                      Make “secondary derivative” LiDAR data available on the VGIS, i.e., ASPECT, HILSHD, Ndsm and SLOPE for the largest projects;

3)      PLANNED (SEPT/OCT):           Integrate vendor provided 2’ contours, generate 2’ contours where needed to update the existing “ElevationContour_CN2T” data layer and make data available on the VGIS.

PHASE IV: (Includes 2007 Bennington, Chittenden, Rutland & Washington flood plains, 2009 Barre-Montpelier, 2010 Bennington flood plains and 2012 VTrans-TSIrene projects). These cover ~6.8% of the state but not exclusive of larger projects, e.g., 2012 Bennington County vs. 2007 & 2010 Bennington floodplains.

1)      PLANNED (SEPT/OCT):            Process Contour, DEM and DSM data into feature and image services, respectively and data available on the VGIS.

 

Please refer to vcgi.vermont.gov/lidar for information about the VT LiDAR Initiative, LiDAR related data and resources, or contact me with questions: mikeb@vcgi.org or 802-882-3008.

 


UVM Staff Award Results in Geospatial Trophy!

May 28, 2014

From  http://www.uvm.edu/~uvmpr/?Page=news&&storyID=18463

OCG Trophy_05.01.14_crop OCG Trophy_05.01.14_toponly

“Six UVM staff members were recognized for their extraordinary contributions and overall impact on the university on May 5 at the inaugural President’s Our Common Ground Staff Award recognition breakfast in Billings Library.

Honorees were chosen from a pool of 24 nominees for exemplifying the qualities of the University of Vermont’s Our Common Ground, the statement of aspirations and shared values of our community: respect, integrity, innovation, openness, justice and responsibility.

Honorees were presented with a hand-crafted award designed by local artist Chris Reck that UVM President Tom Sullivan said embodies the values expressed in the President’s Our Common Ground award. Anchored by a piece of red cambrian sedimentary rock known as Monkton quartzite used in many of the university’s buildings, the award features the Our Common Ground statement transposed on an intricate woodcarving map of the campus.”

Chris Reck of Direct Design contacted VCGI for ideas regarding who might actually create the 3D wood topo map featured in this trophy. Leslie Pelch of VCGI sent a message out on the VT GIS email list serve and several people got in touch with Chris to say they might be able to help. In the end, Spencer Wright of Bristol Contours (802-355-0800) was able to create the maple topo map of a portion of the UVM campus.

 


VCGI and Census Webinars Coming Up!

May 22, 2014

Webinar: Remote Sensing of Lakes: They’re Not All Just Blue!

Come join us for an exploration of the remote sensing of lakes with Shane Bradt of UNH! While most common land remote sensing approaches treat surface water as a single class (“blue” most of the time), a great deal of information about the dynamics and water quality of lakes can be obtained through remote sensing. This webinar will detail the important considerations when using remote sensing on inland water bodies, and summarize some of the recent advances in the remote sensing of lakes.

Webinar takes place May 28 from 1:30 to 2:30 PM

Reserve your FREE Webinar seat now at:

https://www3.gotomeeting.com/register/563164318

U.S. Census Bureau: Free Data Access Summer Camp (Webinars!)
This summer our Partnership and Data Services team will be conducting a series of free data access webinars. Join us online to learn about our datasets and data retrieval tools.We will be conducting thematic sessions utilizing different data tools such as the American Fact Finder, Quick Facts, Data Ferret, Local Employment Dynamics, Business Dynamics Statistics, Voting Hot Reports, etc. All sessions will be conducted by a representative from the U.S. Census Bureau, and will last approximately 2-3 hours.More details and links to register:

http://vcgi.vermont.gov/census_data_webinars_2014


VT Mapping Forum – June 11 – Colchester – Registration Open!

May 12, 2014

VCGI will soon transform into…VCGI (a division of ACCD)!

May 12, 2014

vcgi_staff_2013_b_sm

The Vermont Legislature has passed a bill that changes VCGI’s legal standing. Once the Governor signs the legislation, VCGI will become a division of the Agency of Commerce and Community Development (ACCD). The legislation provides that 6 positions (same as the number of positions we currently employ) will be created and existing employees shall be permitted to transfer to the positions created within the new VCGI. VCGI’s duties have not been changed, so we will continue to provide public geospatial data, information, training, and technical support to the citizens, businesses, nonprofits, and public agencies of Vermont. We’ll let you know if any other changes come up!

Here is a link to the legislation (page 260!): http://www.leg.state.vt.us/docs/2014/journal/HJ140510.pdf


VT Interactive Map Viewer BETA 2.0 Released

April 29, 2014

imv_beta

The VT Center for Geographic Information (VCGI) is pleased to announce an “open beta release” of the new VT Interactive Map Viewer (VT Viewer).

You can participate in a guided tour during the free webinar on April 30.

This BETA 2.0 release includes numerous enhancements

  • The toolbar has been rearranged to make it more intuitive.
  • The look-and-feel of the VT GIS basemap has been significantly improved.
  • Several dozen new data layers (including parcel data) have been added to the viewer.
  • User can change the symbology of any layer.
  • Complete set of VT imagery and imagery indexes.
  • Several new supplemental background basemaps have been added such as contoured hillshade and the latest USGS Topographic Maps.
  • All layers have links to full documentation and downloadable data files.

Now we need to hear from you! Please take the new VT Interactive Map Viewer (BETA 2.0) for a test drive, then let us know what you think by completing the Feedback Survey.

VT Viewer (BETA 2.0): http://dev.maps.vermont.gov/vcgi/vtmapviewerbeta2/

User Survey: http://dev.maps.vermont.gov/vcgi/vtmapviewer/survey.html

The BETA 2.0 release will be available as an “open beta” until May 31st, 2014. After that VCGI will be reviewing all survey feedback and applying any needed adjustments/fixes to the site. We plan to release the final version by July 1st, 2014. It will replace the current VT Interactive Map Viewer.

You can participate in a guided tour during the free webinar on April 30.


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