Vermont’s Public Mapping Data Portal Is Transforming

February 20, 2015

Feb. 20, 2015

Leslie Pelch, Outreach Coordinator

move_pic

After more than 20 years as a public nonprofit, the Vermont Center for Geographic Information (VCGI) will become a division of state government once again. Specifically, it will become a division of the Agency of Commerce and Community Development (ACCD) on March 30, 2015. Originally created as the Office of GIS (geographic information system) in the late 80’s, and then re-formulated as a nonprofit in the early 90’s, VCGI’s mission has never changed and it will continue to provide a one-stop-free-data experience for those seeking digital map layers for Vermont.

Most of VCGI’s staff will be making the transition into state government, where they will take up positions within ACCD’s Information Technology group. VCGI’s Executive Director, David Brotzman, has chosen not to make the transition; his work over the past 15 years has ensured VCGI’s continued effectiveness and sustainability and the VT GIS community wishes him well!

VCGI, as a distinct division, will continue to collect data from municipal, regional, state, and federal entities; make it available for free download; and provide information and links to other resources for those interested in taking advantage of geospatial technology. VCGI also participates in funded projects such as the Broadband Mapping project, digital mapping at the Department of Emergency Management and Homeland Security, and the Vermont Renewable Energy Atlas.

“Users of our services will not notice much of a change in the short term as we make this transition,” VCGI Outreach Coordinator Leslie Pelch said. “In the long term, there may be more opportunities to work with state entities not currently taking advantage of this technology. We will continue to serve all users of Vermont geospatial data.”

“We look forward to leading and advancing the coordination of statewide geospatial data and believe the role of geospatial information within state government, and statewide, is virtually limitless. ACCD is excited to meet this important new challenge with the addition of the VCGI staff into our exceptional team,” added ACCD Deputy Secretary Lucy Leriche.

VCGI staff will join their ACCD coworkers at the National Life Building in Montpelier in early April. Contact information will not change.


VT Mapping News: RFP for Parcel Mapping Posted, Bridge and Culvert Data Videos Posted!

January 14, 2015

grantees_2014_2015RFP for Parcel Mapping Posted: 

Lemington today, Brunswick, Stannard, and Sutton coming soon…

I am excited to report that I have posted the first of (at least) 4 parcel mapping RFPs that will be made available in the next month or so: Lemington, VT!

http://vcgi.vermont.gov/about_us/projects/nvpdp

The link for the RFP is near the bottom of the page, but feel free to check the other information about this funded project (which will be done at the end of this year).

youtube_vtransVTrans Youtube Videos of Bridge and Culvert Data Workshop:

In October 2014, the Vermont Agency of Transportation (VTrans) hosted a workshop to help GIS users of Vermont data understand what bridge and culvert information is available, and which data set is appropriate for their needs.

A series of videos of the information presented at the workshop have been produced by Eric Goldman, Multimedia Specialist, and Sara Moulton, GIS Specialist of the VTrans Division of Policy, Planning and Intermodal Development. The videos can be accessed on YouTube at


Survey to Collect Input on the Value of Parcel Data in Vermont

December 9, 2014

ParcelsScreenshot.285px

 

VTrans has engaged the services of AppGeo to perform a Return on Investment Study as well as a Parcel Lifecycle Report. They are seeking input from a wide variety of people who live or work in VT in order to gather knowledge and opinions about the value of parcel data (one of the key ingredients of a tax map). Visit the Statewide Parcel Data page to learn more ( http://vcgi.vermont.gov/parcels ) or click here to go directly to the survey: https://www.surveymonkey.com/s/VTParcelROI.


The VT LiDAR Initiative Presents: A LiDAR Based Web Service Prototype

October 18, 2014

Join us for a Free Webinar on November 5, 10:30 AM – 11:30 AM

Reserve your Webinar seat now at:
https://www3.gotomeeting.com/register/647517934

In an ongoing effort to “democratize” access to the wealth of information present in LiDAR data, the Vermont LiDAR Initiative (VTLI) sponsored by the Enterprise Geospatial Consortium (EGC) sub-committee “VTeam LiDAR”, presents the first Vermont LiDAR image service prototype of the 2012 Addison County project area. This freely accessible data “service” will ultimately expand to make all available LIDAR project data accessible in both basemap and imagery services. After a very brief introduction on “What is LiDAR?” we will overview the proposed suite of LiDAR-based Web Services to be created and hosted by VCGI and how it can be accessed by all users. Closing out the webinar, we will provide a brief update on the status of LiDAR data collection and distribution efforts across the state before having an open floor discussion on related topics. For a primer on LiDAR basics before the presentation please overview – http://tinyurl.com/WhatIsLiDAR

More about the VT LiDAR Initiative Here: http://vcgi.vermont.gov/LiDAR


Webinars Scheduled, LiDAR Information, Parcels Service Updated

October 1, 2014

LiDAR_Status_2014_250dpi_092914

by Leslie Pelch, VCGI

Parcels: the parcels web map service has been updated to reflect additional or updated parcel data (also available for download)

LiDAR:

  • In addition to completing the Rutland County collection (orange in map above), the entire Winooski River Watershed plus some additional area will be collected in 2014 or 2015. The project will cover more than 2400 square miles (light green in map above), complete Lake Champlain Basin coverage on the Vermont side and include a new coverage for Chittenden County. Total project funding was $880,000 and a total of six cooperators contributed to the project.
  • A pilot area Web Map Service of LiDAR data will be available soon!
  • Updated ArcGIS Online VT LiDAR map makes finding information about available LiDAR and derivatives easier: http://vcgi.vermont.gov/LiDAR

Fall Webinar Series Scheduled (all will be recorded and posted at VCGI’s Youtube channel):


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.

 


Follow

Get every new post delivered to your Inbox.

Join 54 other followers