💧🌏 Greg CocksAug 20
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
💧🌏 Greg CocksMay 14
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
The Feasibility of Using Lidar-Derived Digital Elevation Models for Gravity Data Reduction

Learn about the Feasibility of Using Lidar-Derived Digital Elevation Models for Gravity Data Reduction

USGS
💧🌏 Greg CocksMar 25
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
💧🌏 Greg CocksJan 28
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
3D Hydrography Program (3DHP) 2024 Staged Product (FY25 Release) - ScienceBase-Catalog

This product is new in federal fiscal year 2025 (FY25), and consists only of vector data in a series of feature classes. The product represents the 3DHP dataset and the schema in which it is contained as of September 30, 2024 Future Annual Staged Product releases will reflect the schema at the time the product is generated and include more EDH-sourced data holdings.

J9C   Jan 20

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

💧🌏 Greg CocksJan 17
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
Postfire debris-flow hazards | U.S. Geological Survey

Estimates of the probability and volume of debris flows that may be produced by a storm in a recently burned area, using a model with characteristics related to basin shape, burn severity, soil properties, and rainfall.Wildfire can significantly alter the hydrologic response of a watershed to the extent that even modest rainstorms can produce dangerous flash floods and debris flows. The USGS conducts post-fire debris-flow hazard assessments for select fires in the Western U.S. We use geospatial data related to basin morphometry, burn severity, soil properties, and rainfall characteristics to estimate the probability and volume of debris flows that may occur in response to a design storm.

💧🌏 Greg CocksJan 16
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
Collaboration Advances Elevation Mapping | U.S. Geological Survey

We can know a place pretty well and still learn something from a map of it. A map showing terrain elevation including rivers and streams, for example, indicates where heavy rainfall will flow or new construction of structures, bridges and roads would be most suitable.

💧🌏 Greg CocksJan 8
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
New Training Video: Dynamic Elevation Service in ArcGIS Pro and AGOL | U.S. Geological Survey

Learn how to use the 3D Elevation Program’s Dynamic Elevation Service in ArcGIS Pro and ArcGIS Online (AGOL) in a new training video released by the National Geospatial Program.

💧🌏 Greg CocksJan 7
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
Elevation-Derived Hydrography: The USGS’s rich new hydrological features dataset

The US Geological Survey (USGS) is the main source of publicly available elevation data in the United States. One of the USGS’s major programs, the 3D Hydrography Program (3DHP), includes Elevation-Derived Hydrography (EDH), a detailed water features dataset that is derived from elevation data such as Digital Elevation Models (DEMs). EDH fills the need for hydrography data that align with elevation data, which is important for analysis such as flood modeling. It is difficult to use hydrographic and elevation data together if they do not align—for example, a hydrographic features dataset produced from imagery might indicate a different location for a river’s edge than an elevation dataset over the same area. Because EDH data consist of hydrological features derived from an elevation dataset, the two datasets will align, enabling more accurate analysis and hydro modeling. This new dataset promises to be a very useful tool for a wide range of natural resource applications. In fact, the USGS posted a Hydrography Requirements and Benefits Study (Dewberry 2016), which indicated that the value of the benefits provided by hydrographic data could exceed US$1 billion annually in the United States. These benefits are broken down by “business uses,” which include river and stream flow management, water quality, coastal zone management, and many others. Amongst the public and private hydrographic data users who participated in this study, with regards to hydrographic data integration, “the top five requirements for integration with other datasets were elevation, stream flow, wetlands, …

Journal of Soil and Water Conservation
💧🌏 Greg CocksDec 19, 2024
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
New USGS dataset uncovers the Santiam River’s underwater topography to aid in fish habitat and water flow management | U.S. Geological Survey

A new dataset for the Santiam River in Oregon, published by the U.S. Geological Survey, provides a highly detailed underwater 3D elevation map that will help support fish habitat restoration and flood modeling work.