Lmst

See The Mississippi River’s Hidden History, Uncovered By Lasers
Using hyperprecise LiDAR data,. a cartographer [well, hydrographer!] maps the river’s bend and channels over time with mesmerizing results…
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https://www.nationalgeographic.com/science/article/mississippi-rivers-hidden-history-uncovered-by-lidar <-- shared technical / media article
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https://dancoecarto.com/ <-- shared @Daniel Coe portfolio and more
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https://usace.contentdm.oclc.org/digital/collection/p266001coll1/id/10015/ <-- shared Harold Fisk's 1944 USACE report, “The Alluvial Valley of the Lower Mississippi River”
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#GIS #spatial #mapping #water #hydrography #hydrology #LiDAR #remotesensing #spatialanalysis #spatiotemporal #hydrogeomorphology #Mississippi #River #Fiske #cartography #visualisation #meandering #channels #landforms #floodplains #opendata #3DEP #topography #geomorphology #levees #dikes #oxbows #channel #paleohydrology
#DanielCoe | @nationalgeographic | #USGS | #USACE

Processing [#USGS] 3DEP [#OpenData] LiDAR Point Clouds with Purdue's Data to Science Open Source Pipelines [overview/tutorial]
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https://youtu.be/oicXic8cVqU?si=cz41PgHOC5v-53SY <-- shared video
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https://github.com/gdslab/3dep_tutorial/blob/main/usgs_3dep_tutorial.ipynb <-- #Data2Science project and #Github repositories
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#GIS #spatial #mapping #KnowledgeBase #NSGIC #USGS #3dep #pointcloud #remotesensing #earthobservation #processing #pipelines #opendata #fedscience #publicgood #DataToScience #opensource #overview #tutorial #derivateproducts #workflow #stakeholders #elevation #USA #national #TheNationalMap #tools #3DEPfortheNation #3DEPFTN
#USGS | #NSGIC | #PurdueUniversity

The 3D Elevation Program—Supporting The Economy Of Massachusetts [USGS]
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https://pubs.usgs.gov/publication/fs20253044 <-- shared USGS fact sheet
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#GIS #spatial #mapping #3DEP #opendata #LiDAR #elevation #DEM #Massachusetts #USA #costbenefit #returnoninvestment #topography #usecase #cost #economics #risk #hazard #infrastructure #USGS
@USGS

Need A Tech Colouring Book?
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https://a.co/d/5UuAIPU <-- link to Amazon source
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[note that I am in NO way associated with the publisher or 'author'...]
"This coloring book was assembled using high resolution topography data from the United States Geological Survey’s 3D Elevation Program to create detailed contour maps for each US State and the District of Columbia.
Each State's contour interval (the vertical distance between elevation lines on a map) was selected to preserve the topographic details the State’s inhabitants know and love. Specifically major mountain ranges and river valleys."
#GIS #spatial #mapping #3dep #USGS #elevation #oldschool #coloringbook #colouringbook #contour #contor #relaxation #landform #geology

The Feasibility Of Using LiDAR-Derived Digital Elevation Models [DEMs] For Gravity Data Reduction
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https://www.usgs.gov/3d-elevation-program/news/feasibility-using-lidar-derived-digital-elevation-models-gravity-data <-- shared article
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https://pubs.usgs.gov/publication/ofr20251019 <-- shared report
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“A nice report from our colleagues in the USGS Mineral Resources Program on the feasibility of lidar-derived DEMs, including 3DEP data, for gravity data reduction…”
#GIS #spatial #mapping #3dep #elevation #fedscience #remotesensing #earthobservation #gravity #submetre #accuracy #precision #dGNSS #GNSS #global #navigation #satellite #GPS #LiDAR #DEMs #gravimetrics #milligals #Bouguer #anomaly #monitoring #corrleation #refinement #datareduction #appliedscience #usecases
@USGS

Fluvial System Block Diagrams
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I was looking to understand a fluvial system the other day, up in the high Arctic, as I looked at 3DEP remote sensed elevation data… I have always been fascinated by the how geology, water, weather shapes a landscape, including erosion (aka geomorphology if you will) – and realized how very much value fluvial block diagrams have as we try to conceptualise what has, is and will happen(ed.)
#spatial #spatiotemporal #morphology #meander #levee #understanding #oxbow #pointbar #river #water #hydrology #landform #geomorphology #geomorphometry #geology #fluvial #riverine #weather #climate #erosion #sediment #sedimentation #Arctic #3dep #opendata #DEM #BeringSea #northslope #opendata #fedservice

I Am Proud To Be Part Of The Integrated Team Generating and Publishing An Open Data 3DHP Hydrology Spatial Data Product For The Nation At The USGS
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https://doi.org/10.5066/P148NT7B <-- shared product DOI
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https://commons.datacite.org/doi.org?query=10.5066%2FP148NT7B <-- shared DateCite repository record
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https://3dhp.nationalmap.gov/ <-- 3DHP data is also available via a USGS spatial data service (with select & export capability)
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[‘my’ first product DOI generation & publication as well ~smile~]
#GIS #spatial #mapping #data #water #hydrology #LiDAR #EDH #elevationderivedhydrography #3DHP #opendata #publicdata #DOI #stagedproducts #3DTNM #3DEP #NHD #national #USA #nonproprietary #waterresources #spatialanalysis #model #modeling #3d #vector #schema #DOI#geopackage #filegeodatabase #metadata #XML
@USGS

screen shot - USGS Staged Products download page - 3DHP datasets

screen shot - DateCite repository new record - 3DHP datasets

screen shot - USGS Science Base page page - 3DHP datasets - GeoPackage - Alaska

image - LiDAR-derived - portion of Laguna Creek, CA

Happy New Year and Happy Mapping in 2025!

I plan to boost some #introductions over the next few weeks. It's exciting to see a new wave and I hope that you enjoy the Fediverse!

In the meantime, I've been working on refining a recipe for relative elevation models (REMs) using Dan Coe's methods. My 2025 goal is to cover most of the #Virginia rivers, but we'll see.

Check out @FediTips for tips on how to use Masto.

#GIS #gischat #3DEP #Rappahannock #RVA

Relative Elevation Model of the Rappahannock River in central Virginia, United States. River is shown in various shades of blue to white on a black background.

Postfire Debris-Flow Hazards
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https://www.usgs.gov/programs/landslide-hazards/science/postfire-debris-flow-hazards <-- shared technical article / overview
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http://alturl.com/po3yj <-- USGS Post-Fire Debris Flow Hazard Assessment Viewer
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https://earthquake.usgs.gov/arcgis/rest/services/ls/ <-- Post-Fire Debris-Flow Hazards USGS spatial data / GIS Services
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#GIS #spatial #mapping #USGS #LandslideHazardsProgram #NaturalHazards #3DEP #NGP #NationalGeospatialProgram #GIRT #GeospatialInformationResponseTeam #GIS #geology #hydrospatial #hydrology #landslides #debrisflows #fires #postfire #lidar #elevationdata #hazardassessments #preparedness #massmovement #engineeringgeology #risk #hazards #impacts #cost #economics #geomorphology #geomorphometry #spatialanalysis #spatiotemporal #remotesensing #soil #model #modeling #LosAngeles #LA #LosAngelesfires #California #wildfires #opendata
@USGS

photo - A home damaged by the January 9, 2018 debris flow event in Montecito, California. The event was triggered by heavy rain on the Thomas Fire burn area above Montecito. This home is located near Buena Vista Creek.

screen shot centered on LA - USGS Post-Fire Debris Flow Hazard Assessment Viewer (web map)

photo - Debris Flow in Cable Canyon following the 2003 Old Fire in the San Bernardino Mountains, California

photo - Post-fire debris flow depositing ash and sediment on a steep hillside, 2021 Dixie Fire in northern CA

Collaboration Advances Elevation Mapping – USGS EROS And NGTOC Work Together To Map A 1 Metre Digital Elevation Model For A Watershed
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https://www.usgs.gov/centers/eros/news/collaboration-advances-elevation-mapping <-- shared technical article
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https://doi.org/10.5066/P1CEPE2M <-- USGS data release, Lower Androscoggin Watershed Hydrologic Unit 8 Seamless 1-m DEM Pilot, 2013 to 2020
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#GIS #spatial #mapping #remotesensing #LiDAR #water #hydrology #3dep #3dhp #3dtnm #NGTOC #spatialanalysis #elevation #DEM #EROS #seamlessonemeter #Androscoggin #ME #maine #research #integration #watershed #opendata
@USGS | @USGS_EROS

schematic - this graphic depicts an airborne lidar system, a remote sensing detection system that uses light from a laser. The quick light pulses measure the distance from the plane to the surface and back. GPS is used to help pinpoint location and time for greater accuracy.

map - the seamless 1-meter Digital Elevation Model (DEM) for the Lower Androscoggin watershed in Maine, produced by scientists at NGTOC and EROS. Elevations run from low elevation in light blue on up to tan, green, yellow, red and finally gray/white. The lowest point in the watershed is -.109777 meters, and the highest is 1,916.04 meters.

map / thumbnail - Lower Androscoggin watershed in Maine

This photo was taken at USGS gaging station 01055000 on the Swift River near Roxbury, Maine. The falls is most commonly referred to as Swift River Falls and has many potholes and scours that demonstrate the impressive ability of water to errode rock.

Adding 3D Elevation Program's Dynamic Elevation Web Coverage Services To ArcGIS Pro And AGOL [training video]
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https://www.usgs.gov/ngp-user-engagement-office/news/new-training-video-dynamic-elevation-service-arcgis-pro-and-agol <-- shared technical article
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https://youtu.be/sDEMHT2CmZw?si=u90-966VvslM6RXc <-- shared video
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https://www.usgs.gov/3d-elevation-program/about-3dep-products-services <-- about 3DEP products & services
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https://apps.nationalmap.gov/services/ <-- link to USGS National Map Web Services
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#GIS #spatial #mapping #elevation #LiDAR #ifSAR #3dep #ArcGISPro #AGOL #training #video #learning #NationalMap #services #raster #topography #opendata #DynamicElevationWebCoverageService #DigitalElevationModels #DEM #DTM #onlinelearning #tutorial
@USGS

screen shot - ArcGIS Pro - 3D view of landsurface elevation data

screen shot - USGS training video - Adding 3D Elevation Program's Dynamic Elevation Web Coverage Services To ArcGIS Pro And AGOL

map - ifSAR data of ground surface created by poster, near Kaktovik Alaska on the Beaufort Sea / Arctic

Elevation-Derived Hydrography [EDH] - The USGS’s Rich New Hydrological Features Dataset
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https://doi.org/10.2489/jswc.2024.0314A <-- shared paper
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https://pubs.usgs.gov/publication/tm11B12 <-- USGS EDH Representation, Extraction, Attribution, and Delineation Rules reference publication
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https://www.usgs.gov/3d-hydrography-program <-- shared link to the USGS 3DHP page
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[in my role, I have the pleasure of working with the valuable EDH process(es) and the data it produces on a daily basis]
#GIS #spatial #mapping #water #hydrology #hydrography #3dep #edh #3dhp #elevationderivedhydrography #opendata #elevation #dem #dtm #interpretation #waterfeatures #usecase #waterresources #floodmodeling #alignment #model #modeling #dataset #naturalresources #costs #benefits #economics #businessuse #publicdata #spatialanalysis #USA #USGS
@USGS

map - Geomorphon index data overlaid on hillshade data for Elevation-Derived Hydrography production

maps - (a) Using contours and (b) geomorphon index to validate and refine stream location in Elevation-Derived Hydrography dataset.

maps - Progression of developing derived stream features from a Digital Elevation Model (left to right).

LiDAR base map / image - stream and road, false colour

New USGS Dataset Uncovers The Santiam River’s Underwater Topography To Aid In Fish Habitat And Water Flow Management
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https://www.usgs.gov/news/national-news-release/new-usgs-dataset-uncovers-santiam-rivers-underwater-topography-aid-fish <-- shared article
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https://apps.nationalmap.gov/lidar-explorer/#/ <-- USGS 3DEP LiDAR Explorer (open data)
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#GIS #spatial #mapping #remotesensing #LiDAR #topobathymetry #topobathy #example #usecase #wildfires #rivermanagement #climatechange #waterresources #SantiamRiver #Oregon #KlamathRiver #PotomacRiver #ColoradoRiver #USGS #USACE #3DEP #opendata #topography #elevation #3DTNM #water #hydrology #hydrospatial #pilotproject #prototype #infrastructure #navigation #engineering #riverbed #sediment #sedimentation #habitat #river #waterbody #flowmanagement #dams #salmon #steelhead #fish #WillametteValley #flood #flooding #risk #hazard #model #modeling #FIM #watersupply #agriculture
@USGS @USACE

screen shot - 3DEP LiDAR Explorer - Santiam River, OR's topobathy dataset(s)

imagery - Topobathymetric digital elevation model of the Santiam River in the Willamette Valley southeast of Salem, Oregon. The trees and dry land are shown as a lidar point cloud colored based on aerial imagery.

drone photo - oblique - The North Santiam drains from the Cascade Range and through the Willamette Valley foothills where it combines with the South Santiam before joining the Willamette River near Salem. The river in this section has numerous gravel bars and secondary channels and is flanked by agricultural lands and floodplain forests.

map - Topobathymetric digital elevation model of the Santiam River in the Willamette Valley southeast of Salem, Oregon.

Getting Started On Diagramming This Project’s Workflow, ‘Old School’
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Couple of 10s of pages of data inventory, roles and responsibilities, even the start of a RACI, pot of good black tea – now time to get started on diagramming this project’s workflow, components, interim data products, R&R, development and more #oldschoool, ready for full team involvement – ‘helpers’ notwithstanding!
#GIS #spatial #mapping #opendata #water #hydrology #3dep #edh #3dhp #datadelivery #3dhedit #3dtnm #rolesandresponsibilities #RACI #5W1H #workflow #planning #pm #projectmanagement #integration

photo - cat sitting on top of the start of my work flow diagramming

Consolidated Standardized Survey-Grade Checkpoints 3DEP 2010 to 2017 [USGS]
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https://www.sciencebase.gov/catalog/item/67075e6bd34e969edc59c3e7
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“One of the key aspects of 3DEP data is that data is verified by a collection of certified survey-grade GNSS checkpoints spread throughout each project. These points have always been available but were difficult to find and not standardized. [The USGS] have collated and standardized almost 42,000 of these checkpoints and are making them available for other uses. These points here in this first phase span from 2010-2017, but [the USGS] are in the process of making these available for all [their] projects, and hope to enable them in different ways in the future...”
#GIS #spatial #mapping #USGS #USA #elevation #opendata #remotesensing #LiDAR #ifSAR #3dep #3dhp #water #hydrology #3d #opendata #3dtnm #checkpoint #checkpointdigital #GNS #GPS #NGD #DEM #survey #surveygrade #accuracy #precision #calibration #digital #NGTOC #NAD83
@USGS

screen shot - the 40k± Consolidated Standardized Survey-Grade Checkpoints 3DEP 2010 to 2017

image / map - LiDAR shaded relief (sic) of Tennessee area

image - graphical representation of farmland made with LiDAR and other datasets

image - LiDAR data of trees and ground surface

Lesson 10k1 - Using LiDARExplorer [USGS National Map training video]
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https://youtu.be/36cfnwFWzj4?si=Ne5uk_jjbAjIaSGE <-- shared technical tutorial video
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https://apps.nationalmap.gov/lidar-explorer/#/ <-- link to USGS app
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https://www.usgs.gov/3d-elevation-program <-- USGS 3DEP home page
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“This [USGS] National Map training video is an introduction to using the LidarExplorer application to easily access lidar data and derived products. In LidarExplorer, you can search for lidar projects, digital elevation models, and lidar point cloud files to meet your needs…”
#GIS #spatial #mapping #remotesensing #LiDAR #LidarExplorer #app #webmap #data #opendata #NationalMap #training #video #tutorial #selfhelp #onlinelearning #3dep #US #USA #DEM #elevation
@USGS