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County
Assessor - Parcel Universe (Current Year Only)
Cook County of Illinois —
A current-year-only universe of Cook County parcels with attached geographic, governmental, and spatial data. When working with Parcel Index Numbers (PINs) make sure... -
County
Assessor - Parcel Sales
Cook County of Illinois —
Update 10/31/2023: Sales are no longer filtered out of this data set based on deed type, sale price, or recency of sale for a given PIN with the same price. If users... -
County
Assessor - Commercial Valuation Data
Cook County of Illinois —
Commercial valuation data collected and maintained by the Cook County Assessor's Office, from 2021 to present. The office uses this data primarily for valuation and... -
State
Patents by Connecticut Inventors 1800-1890
State of Connecticut —
Connecticut Patents 1800-1890 This list was compiled by Museum of Connecticut History staff in the 1990s, and lists all patents by Connecticut inventors between the... -
County
Assessor - Parcel Universe
Cook County of Illinois —
A complete, historic universe of Cook County parcels with attached geographic, governmental, and spatial data. When working with Parcel Index Numbers (PINs) make sure... -
County
Assessor - Single and Multi-Family Improvement Characteristics
Cook County of Illinois —
Single and multi-family (less than 7 units) property characteristics collected and maintained by the Assessor's Office for all of Cook County, from 1999 to present.... -
State
Rivers and Streams - Generalized
State of Maryland —
The digital segmented network based on watershed boundaries, ERF1-2, includes enhancements to the U.S. Environmental Protection Agency's River Reach File 1 (RF1)... -
State
Chesapeake Bay Contours
State of Maryland —
Bathymetry for Chesapeake Bay was derived from two hundred ninety-seven surveys containing 3,178,509 soundings. Thirty-five older, less accurate, overlapping surveys... -
State
8 Digit Watersheds
State of Maryland —
This file (SWSUB8) is a statewide digital watershed file. It depicts the State with 138 separate watersheds each with an 8-digit numeric code. The file was created... -
State
Priority Shoreline Areas
State of Maryland —
Each point in Coastal Resiliency Assessment Shoreline Points represents a 250 meter segment of the Maryland coast, including Atlantic, Chesapeake Bay and Coastal Bay... -
City
108" Inundation Vulnerability Zone Line (Sea Level Rise + 100YR Flood Event)
City of San Francisco —
Disclaimer: The Sea Level Rise (SLR) map shows the most extreme level of SLR possible. It is a very, very unlikely scenario that would only occur if no efforts to... -
County
Assessor - Residential Condominium Unit Characteristics
Cook County of Illinois —
Residential condominium unit characteristics collected and maintained by the Assessor's office for all of Cook County, from 1999 to present. The office uses this data... -
State
Hazard Reduction by Habitats
State of Maryland —
Each point in Coastal Resiliency Assessment Shoreline Points represents a 250 meter segment of the Maryland coast, including Atlantic, Chesapeake Bay and Coastal Bay... -
State
Rivers and Streams - Generalized
State of Maryland —
The digital segmented network based on watershed boundaries, ERF1-2, includes enhancements to the U.S. Environmental Protection Agency's River Reach File 1 (RF1)... -
State
Shoreline Hazard Index
State of Maryland —
Each point in Coastal Resiliency Assessment Shoreline Points represents a 250 meter segment of the Maryland coast, including Atlantic, Chesapeake Bay and Coastal Bay... -
State
Priority Shoreline Areas
State of Maryland —
Each point in Coastal Resiliency Assessment Shoreline Points represents a 250 meter segment of the Maryland coast, including Atlantic, Chesapeake Bay and Coastal Bay... -
State
Hazard Reduction by Habitats
State of Maryland —
Each point in Coastal Resiliency Assessment Shoreline Points represents a 250 meter segment of the Maryland coast, including Atlantic, Chesapeake Bay and Coastal Bay... -
State
MO_2010_Department_of_Natural_Resources_Wild_Areas_shp
State of Missouri —
This data set depicts the boundaries of Wild Areas managed by the Missouri Department of Natural Resources, Division of State Parks. This data was derived by... -
State
Large Rivers Lakes and Ponds
State of Maryland —
This layer is extracted from The High Resolution National Hydrography Dataset Plus (NHDPlus HR). This is an integrated set of geospatial data layers, including the...