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USGS The National Map
Products and services
Elaine Guidero
North Dakota Geospatial Summit
9/14/2022
What is The National Map?
2
▪ Elevation
▪ Hydrography
▪ Orthoimagery
▪ Geographic Names
▪ Boundaries
▪ Transportation
▪ Structures
▪ Land Cover
Data
▪ 277,000 miles
of trails
Data: Trails
▪ 3000 editors
▪ 520,000 points
▪ 750,000 edits
TNM Corps
Viewer https://apps.nationalmap.gov/viewer/
Downloader https://apps.nationalmap.gov/downloader/
7
Services
8
Training
9
▪ BGN voted on 650
name changes last
week
▪ 5 names will be
changed in ND
GNIS place name changes
11
▪ Digital 7.5’ topographic map (2009+)
▪ 3-year production cycle
▪ XML metadata with every map
▪ Can be read on-screen or printed
US Topo
nationalmap.gov/ustopo
How to access US Topo maps
USGS Store
store.usgs.gov
TNM Downloader
apps.nationalmap.gov/downloader
Historical Topo maps
How to access historic topo maps
TopoView
ngmdb.usgs.gov/topoview/
topoBuilder
topobuilder.nationalmap.gov
▪ Maps made on demand
▪ Currently 7.5-minute maps, other
sizes/scales coming soon
▪ Latest available data
▪ Choose your layers, format, and
contour smoothness
topoBuilder
topoBuilder
topoBuilder
topoBuilder
topoBuilder
topoBuilder
US Topo 1:100,000 metric maps
Getting from 24K to 100K
Structures
Hydrography
Hydrography
Transportation
Contours
Woodland
Topo data
through time
3DEP
1 meter
resolution
10 meter
resolution
30 meter
resolution
Bare earth DEM
Lidar point cloud
(colorized by aerial
photo)
Lidar profile
3DEP
34
Elevation Viewer
apps.nationalmap.gov/3depdem
3DEP services
LidarExplorer
www.usgs.gov/nationalmap/lidar
explorer
35
ND Dept of Water Resources, Sept 2022
USGS 3DEP, Sept 2021
NHD and WBD
WBD
NHD
National drainage network, 24K scale Nested hydrologic units in 8 levels
From NHD to 3DHP
PAST:
NHD
Medium
Resolution
PRESENT:
NHD High
Resolution
FUTURE:
Hydrography
Derived from
Lidar
Elevation
source
30 meter 10 meter 1 meter
(5 meter in AK)
Hydrography
source
1:100,000-
scale NHD
1:24,000-scale
or better NHD
1:5,000-scale
or better
derived from
lidar
Number of
flowline
features
nationally
2.7 million 26 million 200-300
million
3DNTM: integrating elevation and hydrography
Underpins flood risk management, hazards response and mitigation,
infrastructure management, climate change science
National Hydrography Infrastructure
Other fun stuff
43
Elaine Guidero
eguidero@usgs.gov
720-768-9610
Need help? Want to learn more?
▪ TNM Help Desk
tnm_help@usgs.gov
▪ TNM User Engagement Office
usgs.gov/TNMLiaisons

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NDGeospatialSummit2022 - USGS The National Map