Welcome to the Montana Geodetic Resources Page, created and maintained by your Montana Geodetic Coordinator and Montana Geodetic Working Group. Within, please find useful information and updates on events and programs that directly affect Montana’s geodetic data users and creators.
The Montana Geodetic Working Group currently consists of representatives from NOAA/NGS, MARLS, MDT, The Montana State Library, MAGIP, and the Tribal Nations.
View the INTERACTIVE REGIONAL BENCH MARK MAP to discover and reserve remaining bench marks prioritized for recovery and survey-grade GPS observation! (WEBINAR 2 offers an introduction in how to use this map application beginning at 1:05:40 …link below.)
LIVE DASHBOARD OF THE GPS ON BENCH MARKS EFFORT IN THE ROCKY MOUNTAIN REGION. See who is submitting observations!
View the NGS BENCH MARK PRIORITY MAP to see the nationally prioritized bench marks. (completed marks shown by green symbol)
Don’t know what the GPS on Bench Marks effort is?…CLICK HERE to learn more from the National Geodetic Survey website.
SIGN UP HERE to provide your volunteer information to the regional campaign and be on our list to receive future updates.
Three webinars have been offered and recorded. If you’d like to view these webinars, please find the links below:
VIEW WEBINAR 1: This webinar was an introduction to the GPS on Bench Mark effort and available resources.
VIEW WEBINAR 2: This webinar focused on bench mark recovery. We reviewed what a data sheet is and what most of its content reveals (so you can find the mark), how to use DS-World to upload your recovery information (descriptions, photos, coordinates) to the NGS database (the information will be added to the existing data sheet).
We discussed the map provided for the Rocky Mountain Region (CO, WY and MT) as well as contacts in each of the states. (****An introduction in how to use the INTERACTIVE REGIONAL BENCH MARK MAP starts at 1:05:40)
VIEW WEBINAR 3: This webinar focused on data collection and submittal via OPUS Share. Link to be provided soon!
In 2022 (or therebouts) a new National Spatial Reference Frame (NSRF) will be released by NGS. This updated National Spatial Reference System (NSRS) will do away with NAD 83 and NAVD 88 datums and rely on GNSS infrastructure and an updated and time-tracked GEOID model. Montana State Plane Coordinates will also be affected as NAD 83 is left behind. Learn more about NGS datum naming conventions HERE.
Currently, this State Plane Coordinate System update is open for comment until August 31, 2018. READ THE DRAFT POLICY HERE. Email your State Geodetic Coordinator to submit your comments. MTcoordinator@marls.com
From the NGS website:
Through a concerted outreach effort by NGS, each state will be given the opportunity to update their State Plane Coordinate system, with the roll-out of the four new terrestrial reference frames. Any requested changes to the system must be in accordance with the NGS Policy on Changes to State Plane Coordinate Systems.
Should a state decide not to provide any feedback, NGS will likely define State Plane Coordinates (SPC) for that state through the same projections and zones associated with NAD 83, but with offsets in northings and/or eastings to distinguish these new coordinates from the SPCs of NAD 83 and NAD 27. As SPCs are a user-driven commodity, NGS is not expending any resources at this time investigating the improvement of this system.
Learn more about the replacement of NAD 83 and NAVD 88 on the NGS website.
The Bonneville Power Administration (BPA) has been providing the Pacific Northwest with clean energy since 1937, and it has been responsible for surveying its infrastructure since inception. Over the course of our 80 year history, we have been fortunate to preserve cadastral records across our seven state territory. We are in the process of creating an ArcGIS Online (AGOL) environment where the individual cadastral records are georeferenced and original field notes can be searched. We now have Idaho, Montana, and Oregon available for research and want to share this information with you!
The data can be accessed through ArcGIS Online by searching for ‘BPA Cadastral’, then open the ‘APP’ icon at the bottom of the search. You can also reach the same maps here:
BPA Cadastral Control – Idaho
BPA Cadastral Control – Montana
BPA Cadastral Control – Oregon
Please note that the location data was pulled mostly from GCDB values and should be used for research purposes only. There is no warranty that monuments as noted should be held. Please be sure to perform additional research and utilize this information for its’ historical value in perpetuating evidence.
We will be periodically adding to the database, with Washington cadastral records to follow. We continue to survey across BPA’s service area and will update current records at a regular interval, to be determined. Please share this with others who may benefit as well.
For technical assistance or questions regarding content, please contact Dave Taylor at 360-619-6947 or firstname.lastname@example.org
Thank you and happy researching!
Kelly and Jay
Kelly L. Miller, RLS, EIT
Supervisory Land Surveyor | TERM – TPP4
Bonneville Power Administration
bpa.gov | P 360-619-6948 | C 360-719-0401
Email the Montana Geodetic Coordinator Working Group: MTcoordinator@MARLS.com