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State
California's Groundwater Update 2020 (Bulletin 118)
State of California —
California's Groundwater Update 2020 (CalGW) is California's foremost technical publication on groundwater in the state of California. CalGW, formally known as... -
State
MTA Service Alerts: 2012 - 2020
State of New York —
Historic service alerts archived from the GMS system. This dataset captures all revisions of alerts for incidents affecting the transit network prior to 2020. Unlike... -
Federal
North American Rail Network Nodes NGDA
Federal Geographic Data Committee —
The North American Rail Network (NARN) Rail Nodes dataset was created in 2016 and was updated on September 30, 2025 from the Federal Railroad Administration (FRA) and... -
Federal
Glacier Bay Cumulative Oceanographic Monitoring Database (OC_D)
Department of the Interior —
The NPS Southeast Alaska Inventory and Monitoring Network's oceanography vital sign is conducted in Glacier Bay National Park and Preserve. Vertical profiles of... -
Federal
BLM ID Ground Transportation Linear Features
Department of the Interior —
Formerly published as TRANS_NOC_GTLF_PUB_UNK_LINE This standard houses linear features on BLM lands as well as transportation features that provide access to BLM... -
State
Roadway Assets
State of Connecticut —
A custom basemap created for internal Connecticut Department of Transportation in web apps and maps.The basemap represents the most recent and active Public Road... -
Federal
AMS San Diego Testbed - Calibration Data
Department of Transportation —
The data in this repository were collected from the San Diego, California testbed, namely, I-15 from the interchange with SR-78 in the north to the interchange with... -
State
Local Roads
State of Connecticut —
A custom basemap created for internal Connecticut Department of Transportation in web apps and maps.The basemap represents the most recent and active Public Road... -
City
Mobility Hubs
City of Seattle —
Frequent, reliable transit service is the foundation of a transportation system that empowers all travelers and makes Seattle a truly transit-friendly city. A robust... -
Low English Proficiency Populations Index
District of Columbia —
Using Census data, the Low English Proficiency Populations Index shows Census blocks classified into five categories based on the population of persons with low... -
Roadway SubBlock
District of Columbia —
SubBlock represent the near-full extent of our centerline network (only driveways are excluded). SubBlock is the finest grained, 'base' segments from which all other... -
State
Connecticut Road
State of Connecticut —
Connecticut Roads and Trails is 1:24,000-scale base map data. It depicts the location of all roads and trails published on the USGS topographic quadrangle maps. For... -
High Injury Network
District of Columbia —
In 2022, DDOT conducted an analysis of all corridors in the District based on reported injury and fatality crash data from June of 2016 – July of 2021. The resulting... -
State
Maryland Routes
State of Maryland —
Maryland Roadway Centerline data consists of linear geometric features which represent the street centerline for all public roadways in the State of Maryland. The... -
Federal
Synthesize Data for Emerging Data Cleaning and Fusion Tool Link
Department of Transportation —
The Synthesize Data for Emerging Data Cleaning and Fusion Tool dataset is a privacy-preserving synthetic dataset developed to support and demonstrate the... -
City
Missing Sidewalks
City of Seattle —
The Pedestrian Element of the Seattle Transportation Plan (STP) is a blueprint to create a more walkable Seattle and provides a suite of pedestrian improvements... -
Federal
Intelligent Network Flow Optimization Prototype Traffic Management Entity-Based Speed Harmonization
Department of Transportation —
Data is from the small-scale demonstration of the Intelligent Network Flow Optimization (INFLO) Prototype System and applications in Seattle, Washington. Connected... -
City
Blockface
City of Seattle —
Displays blockfaces for all segments of the street network. Identifies the elements of the block, such as peak hour restrictions, length of the block, parking...