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Wetland Inventory
District of Columbia —
This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the United States and its Territories. These data delineate... -
City
Water Mains
City of Seattle —
A grouped feature layer that includes Water Mains, Water Services, Same Side Tap Only and No New Taps layers.Water Mains are large buried pipes that distribute water... -
City
Presumed Unlined
City of Seattle —
A grouped feature layer that includes Water Mains, Water Services, Same Side Tap Only and No New Taps layers.Water Mains are large buried pipes that distribute water... -
Wetland Types
District of Columbia —
This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the United States and its Territories. These data delineate... -
Impervious Surface 2021
District of Columbia —
The dataset contains basemap features that are typically classified as impervious surface, captured in 2021. Some examples of Impervious Surfaces include: Airport... -
State
WBDLine NGDA
State of Oregon —
Abstract: This file contains Hydrologic Unit (HU) polygon boundaries for the United States, Puerto Rico, and the U.S. Virgin Islands. The data is a seamless National... -
State
Surface Water Quality Polygon
State of Connecticut —
See full Data Guide here. Surface Water Quality Classifications Set: This dataset is a line and a polygon feature-based layer compiled at 1:24,000 scale that includes... -
City
Water Services
City of Seattle —
A grouped feature layer that includes Water Mains, Water Services, Same Side Tap Only and No New Taps layers.Water Mains are large buried pipes that distribute water... -
Fire Hydrants
District of Columbia —
This layer contains points representing locations for fire hydrants in the District of Columbia. -
County
Allegheny County Land Cover Areas
Allegheny County / City of Pittsburgh / Western PA Regional Data Center —
The Land Cover dataset demarcates 14 land cover types by area; such as Residential, Commercial, Industrial, Forest, Agriculture, etc. If viewing this description on... -
Federal
BLM OR Hydrography Area Polygon Hub
Department of the Interior —
HYD_AREA_POLY: This dataset contains area features from the US Geologic Survey (USGS) High Resolution National Hydrography Dataset (NHD). NHD Flowline features are... -
County
Sanitary Districts
Lake County, Illinois —
Download In State Plane Projection Here. Sanitary Districts provide sewage collection and treatment within their service areas. Update Frequency: This dataset is... -
Hydrography Lines 2021
District of Columbia —
This layer contains hydrography such as streams, rivers, and other linear hydrography features. Hidden hydrography, inferred drainage connectors, or culverts connect... -
State
10-digit HU (Watershed) NGDA
State of Oregon —
Abstract: This file contains Hydrologic Unit (HU) polygon boundaries for the United States, Puerto Rico, and the U.S. Virgin Islands. The data is a seamless National... -
Chesapeake Bay Watersheds
District of Columbia —
The dataset contains locations and attributes of HUC-11 watersheds. The USGS presents a detailed explanation of HUCs at https://water.usgs.gov/GIS/huc.html. HUC-11... -
Floodplains Outline
District of Columbia —
The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and... -
State
Water Wells
State of Oregon —
This is a hybrid of location sources for well reports (logs). There is one location for all reports, even if it is the same well (new, deepening, etc. may all be... -
Floodplains from 2023
District of Columbia —
The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and...