The CT Open Data Portal makes data from state agencies publicly available in machine-readable format to increase government transparency, drive efficiencies, and spark innovation. This page highlights information about assets published on the Open Data Portal, including the types of assets and the number of views and downloads of data on the Portal.

This dataset lists suggestions received through the CT Open Data Dataset Suggestion survey here: https://data.ct.gov/stories/s/eivh-c3ze.

This dataset provides information about access to public assets on the CT Open Data Portal by day. Types of access include:

-Grid view -Primer page view -Download -API read -Story page view -Visualization page view

It includes assets that meet the following criteria:

-Published on the data.ct.gov domain -Public -Official (ie published by a registered user) -Not a derived view

The Collaborative is a public-private partnership that advocates for the public availability of open and accessible data to drive planning, policy, budgeting and decision making in Connecticut at the state, regional and local levels. We are a user-driven organization, serving nonprofits, advocates, policymakers, community groups, and funders in using data to drive policy and improve programs and services. Michelle is responsible for executing the vision and strategy of the Collaborative which seeks to advance open data statewide and to facilitate data-driven decision making. She seeks to increase the use of public open data and grow the community of users across the state. Sasha Cuerda, Director of Technology: Sasha is a web developer with experience building data visualization tools, developing database systems for managing spatial data, and developing data processing workflows. He is also a trained urban planner and geographer. Brendan Swiniarski, Civics Applications Developer: Brendan is a web developer with experience designing user-centered web sites. He also processes data and develops metadata for CTData.org. Contact: Email us at info@ctdata.org Sasha Cuerda, Director of Technology: Sasha is a web developer with experience building data visualization tools, developing database systems for managing spatial data, and developing data processing workflows. He is also a trained urban planner and geographer. Brendan Swiniarski, Civics Applications Developer: Brendan is a web developer with experience designing user-centered web sites. He also processes data and develops metadata for CTData.org. Contact: Email us at info@ctdata.org Sasha is a web developer with experience building data visualization tools, developing database systems for managing spatial data, and developing data processing workflows. He is also a trained urban planner and geographer. Brendan is a web developer with experience designing user-centered web sites. He also processes data and develops metadata for CTData.org.

This page provides some instructions, tips, and videos to help you perform common tasks on data.ct.gov. It also contains links to more in-depth help content.

This dataset provides information about access to public assets on the CT Open Data Portal by day. Types of access include:

-Grid view -Primer page view -Download -API read -Story page view -Visualization page view

It includes assets that meet the following criteria:

-Published on the data.ct.gov domain -Public -Official (ie published by a registered user) -Not a derived view

Connecticut’s first Geographic Information Officer, Alfredo Herrera, presents about the mission, goals, and activities of the new CT GIS Office and the new CT Geodata Portal. The CT Geodata Portal is a catalog of geospatial data and apps developed by Connecticut state agencies and partner organizations. Alfredo covers different ways to use the Geodata Portal and what is planned in the future.Hosted by Emily Wilson. Recorded on September 13, 2023.

This file contains boundaries for each Town in the state, including the DCF Region and Area Office responsible for providing services to each Town. This data is as of 7/1/2014, is unlikely to change frequently, and will be updated with any change to the catchment zones.

Public Act 21-159 established a state goal of universal access to 1000 Mbps download and 100 Mbps upload across the State of Connecticut. This map shows progress to that goal. At the town level, the map includes both availability and adoption data for 1000/100 packages while the block level shows only availability.This map uses OPM collected availability and adoption data As of 2023, OPM collected availability data was submitted by internet service providers pursuant to PA 21-159 and processed by the GIS Office in the Office of Policy and Management, cleaned, and matched to the CostQuest location fabric.Metadata:All feature layers, maps, and datasets including OPM's internal broadband availability data follows the same basic schema with additional fields added in some case for convenience.Fields named no service, unserved, underserved, served, and GigC are counts of locations where a particular level of broadband service is provided, No service locations are those where there is no reported service at all. Unserved locations are locations where there is a provider offering wireline service, but not at or above 25 Mbps download and 3 Mbps upload. Underserved locations are locations where at least one provider offers wireline service of 25 Mbps download and 3 Mbps upload, but there is no provider offering wireline service of 100 Mbps download and 20 Mbps upload. Served locations are locations where there is wireline service of at least 100 Mbps download and 20 Mbps upload. GigC denotes the count of locations that have service at 1000 Mbps download and 100 Mbps upload. Accordingly, total locations is equal to the sum of no service, unserved, underserved, served, and "GigC" locations. Availability also includes fields for average download and upload speeds. These are calculated at the relevant level of census geography based on the maximum for all locations.The final field included in all availability data is the provider list. Link to town layer: Connecticut Broadband Availability Data by Town 2024

This dataset includes information about state agencies publishing data on the CT Open Data Portal, including number of datasets, maps, external datasets (href), federated datasets (federated href), and data stories. It also includes a summary of the freshness of the data and the completeness of the metadata by agency.

This feature service is available through CT ECO, a partnership between UConn CLEAR and CT DEEP. It is also available as a map service and a tiled map service. This dataset is a statewide service of municipal parcels (properties) including their geometry (polygon shape) and attributes (tabular information about each parcel). In order to preserve the attributes, each municipality is added individually to the service.

Note: Please use the following view to be able to see the entire Dataset Description: https://data.ct.gov/Environment-and-Natural-Resources/Hazardous-Waste-Portal-Manifest-Metadata/x2z6-swxe Dataset Description Outline (5 sections) • INTRODUCTION • WHY USE THE CONNECTICUT OPEN DATA PORTAL MANIFEST METADATA DATASET INSTEAD OF THE DEEP DOCUMENT ONLINE SEARCH PORTAL ITSELF? • WHAT MANIFESTS ARE INCLUDED IN DEEP’S MANIFEST PERMANENT RECORDS ARE ALSO AVAILABLE VIA THE DEEP DOCUMENT SEARCH PORTAL AND CT OPEN DATA? • HOW DOES THE PORTAL MANIFEST METADATA DATASET RELATE TO THE OTHER TWO MANIFEST DATASETS PUBLISHED IN CT OPEN DATA? • IMPORTANT NOTES INTRODUCTION • All of DEEP’s paper hazardous waste manifest records were recently scanned and “indexed”. • Indexing consisted of 6 basic pieces of information or “metadata” taken from each manifest about the Generator and stored with the scanned image. The metadata enables searches by: Site Town, Site Address, Generator Name, Generator ID Number, Manifest ID Number and Date of Shipment. • All of the metadata and scanned images are available electronically via DEEP’s Document Online Search Portal at: https://filings.deep.ct.gov/DEEPDocumentSearchPortal/ • Therefore, it is no longer necessary to visit the DEEP Records Center in Hartford for manifest records or information. • This CT Data dataset “Hazardous Waste Portal Manifest Metadata” (or “Portal Manifest Metadata”) was copied from the DEEP Document Online Search Portal, and includes only the metadata – no images. WHY USE THE CONNECTICUT OPEN DATA PORTAL MANIFEST METADATA DATASET INSTEAD OF THE DEEP DOCUMENT ONLINE SEARCH PORTAL ITSELF? The Portal Manifest Metadata is a good search tool to use along with the Portal. Searching the Portal Manifest Metadata can provide the following advantages over searching the Portal: • faster searches, especially for “large searches” - those with a large number of search returns unlimited number of search returns (Portal is limited to 500); • larger display of search returns; • search returns can be sorted and filtered online in CT Data; and • search returns and the entire dataset can be downloaded from CT Data and used offline (e.g. download to Excel format) • metadata from searches can be copied from CT Data and pasted into the Portal search fields to quickly find single scanned images. The main advantages of the Portal are: • it provides access to scanned images of manifest documents (CT Data does not); and • images can be downloaded one or multiple at a time. WHAT MANIFESTS ARE INCLUDED IN DEEP’S MANIFEST PERMANENT RECORDS ARE ALSO AVAILABLE VIA THE DEEP DOCUMENT SEARCH PORTAL AND CT OPEN DATA? All hazardous waste manifest records received and maintained by the DEEP Manifest Program; including: • manifests originating from a Connecticut Generator or sent to a Connecticut Destination Facility including manifests accompanying an exported shipment • manifests with RCRA hazardous waste listed on them (such manifests may also have non-RCRA hazardous waste listed) • manifests from a Generator with a Connecticut Generator ID number (permanent or temporary number) • manifests with sufficient quantities of RCRA hazardous waste listed for DEEP to consider the Generator to be a Small or Large Quantity Generator • manifests with PCBs listed on them from 2016 to 6-29-2018. • Note: manifests sent to a CT Destination Facility were indexed by the Connecticut or Out of State Generator. Searches by CT Designated Facility are not possible unless such facility is the Generator for the purposes of manifesting. All other manifests were considered “non-hazardous” manifests and not scanned. They were discarded after 2 years in accord with DEEP records retention schedule. Non-hazardous manifests include: • Manifests with only non-RCRA hazardous waste listed • Manifests from generators that did not have a permanent or temporary Generator ID number • Sometimes non-hazardous manifests were considered “Hazar

Links to videos to help users get started using the Connecticut Open Data portal and the Socrata platform.

Included in the data set is :

A page highlighting data stories published on the CT Open Data Portal

The towns of Connecticut (CT) Parcels and Computer-Assisted Mass Appraisal (CAMA) data for 2022 are part of a zipped file containing two items: CT parcels in geodatabases organized by COGs and associated CAMA files.

The parcel information includes 169 out of 169 town organized with geodatabases for each of the 9 Council of Governments. Most of the parcel data sets can be linked to the CAMA data which has attribute information (e.g. value of house, number of bedrooms) about real property. The parcel features for each town are in shape files, feature classes, or within a geodatabase. Most parcels are organized by town and COG and placed within a geodatabases.

The CAMA data sets have information about real property within the towns of CT. It may be linked to the parcels using a join process within a GIS package like ArcGIS Pro or QGIS. 154 out of 169 towns have complete CAMA information. Of the remaining 15 towns, four have no information and the remaining have some limited information mixed into the parcel attribute tables. These files were gathered from the CT towns by the COGs and then submitted to CT OPM. Town data is organized by COG. Attribute names, primary key, secondary key, naming conventions, and file formats are not fully consistent but some cleaning and reorganization was conducted to improve quality. This file was created on 03/08/2023 from data collected in 2021-2022.

The boundaries of the district polygons are both modified and unmodified pre-existing polygons provided by NPS and SHPO, as well as new, previously unmapped districts. For the previously unmapped districts, the boundaries were defined by any maps provided by the associated resource PDF, for resources that lacked a map the boundaries were drawn based on point _location. The boundaries of these district polygons may not be reflective of the boundaries as interpreted by local governments.Please refer to the local ordinances for specific local boundary information.

Connecticut off shore baseline for use with DSAS software. Created by J Stocker, modified by K O'Brien, reviewed by JS 9/25/2013.

The CT Geodata Portal is an open data site for all geospatial data in Connecticut. Users can find spatial datasets directly administered by the GIS Office as well as those shared by the Department of Transportation, the Department of Energy and Environmental Protection, CT ECO, and other partners. The Geodata portal aims to provide residents, policymakers, and researchers easy access to foundational geospatial datasets and promote open data principles.

This CT Full State layer consists of two individual polygons representing the land and Long Island Sound borders that make up the state of Connecticut.

This land portion of this feature layer is directly derived from the 'https://geodata.ct.gov/datasets/CTDOT::ct-municipalities/about' rel='nofollow ugc'>CTDOT Municipalities feature layer geometry, created by CT Department of Transportation. The full state is created by dissolving all the municipalities into one polygon.

The Long Island Sound portion is derived from points defining the Connecticut state waters boundary line, as described in the 'https://portal.ct.gov/-/media/deep/fishing/commercial/marinecircpdf.pdf' rel='nofollow ugc'>CTDEEP Marine Fisheries Information Circular (Table 6).

This feature layer includes US Census Federal Information Processing Standards (FIPS) codes that are associated with the state of Connecticut.