JJ Bjordahl

Goat Rocks Wilderness, North of Old Snowy, South of Packwood Glacier, looking Southwest toward Loowit (Mt. St. Helens).

BT-I-310.pdf

Above is a Public Land Corner Maintenance Report and is among the first public records with my name attached for work performed under the County Surveyor.

Above four pink dots show the first public Land Corners I have located and for which my name is on record.  The NE-most dots are a pair.  The area shown is in the neighborhood of Corbett and Larch.

Asset Mapping and Project Tracking Samples

(click < > to navigate)

Above slide-deck shows simple Google Map products for navigation, project tracking and asset locating. Use arrows to change slides.

Looking for Giants (Yggdrasil in a Haystack), LiDAR Project

Pictured above: One of the trees I sought in the Looking for Giants (Yggdrasil in a Haystack) project- some work samples shown below. The project was developing GIS methods for locating individual mature  / ancient / old growth trees and thus protectable habitats, using public LiDAR data.

From Looking for Giants (Yggdrasil in a Haystack): Above is a animated GIF showing visualized samples of Watershed Delineation, Canopy Height Modeling, Canopy Density Calculations, Tree Crown Delineation, Lidar Extraction & 3D Modelling. Fall 2020

Canyoneering Cartography, Utah & Arizona

Buckskin Gulch & Paria Canyon, Winter 19/20.

"Buckskin is the longest slot canyon in the U.S., and some consider it the longest in the world. It's also one of the most dangerous. " - Jennifer Billock (Smithsonian)

Native Plant Center, Data Visualization

NPC Phenology Project Sample

A Phenology Data Visualization Project for Metro's Native Plant Center. Spring 2019

(sample only)

3D Interactive Modelling

Wy'East (Mt. Hood) topography cookie-cut to the Timberline Trail.  From a Digital Elevation Model (DEM) to a 3D object. (Click image to navigate)

Topographic Visualization

Tahoma's (Mt. Rainier) Wonderland Trail stylized.

Jobsite & Asset Mapping

A job site map for a project involving Metro and Multnomah County, 48"x36"

Asset mapping for projects involving City of Portland's Water Bureau and Multnomah County, 48"x36"

Wildlife Habitat Data Visualization and Analysis

Remote Camera Trap Sites in the Mt. Hood National Forest & A Sierra Nevada Red Fox (Vulpes vulpes nector) Site Suitability Assessment with Locations of Positive Identifications, 2010-2017. For Cascadia Wild & USFS. 

Popular Trails Stylized

Popular NW circumnavigation trails, a project in progress.