AndreaBozzo/ceres-open-data-index huggingface dataset:
Annual Average Daily Traffic

<font size='3'><span style='font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif;'>A collection of layers </span><span style='font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif;'>maintained</span><span style='font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif;'> by the Traffic Monitoring Unit. </span><span style='font-family:&quot;Segoe UI&quot;, Arial, sans-serif;'>The traffic signal control area polygons were developed by the CTDOT and updated by UConn and VHB. The feature class was developed by digitizing the area that represents the geographic extent of the signalized intersections. Attributes were migrated from the previous system and only the intersection number has been maintained. Long term plans are to remove some of the fields and migrate them to correct geographic asset in the signals data model. This will preserve the asset lifecycle.</span></font>
Erosion Susceptibility Set

Connecticut Erosion Susceptibility a 1:24,000-scale, polygon feature-based layer that was developed as a predictive tool to show areas most susceptible to terrace escarpment type erosion. The layer compiled from the soils and quaternary geology data layers and was field tested during October-December, 2005. The Erosion Susceptilibity layer was developed as part of Project #03-02 Statewide GIS Analysis and Mapping of the Geologic Conditions Contributing to Eroding Terrace Escarpments. The layer does not represent eroding conditions at any one particular point in time, but rather base or general conditions which can be accounted for during planning or management strategies. The layer includes 4 types of areas susceptible to erosion, ranked 1 (most susceptible) through 4, and their descriptive attribute. Areas outside of the mapped polygons can be considered less susceptible to erosion. Data is compiled at 1:24,000 scale. This data is not updated.

Connecticut Erosion Sites is a site specific, point feature-based layer developed at 1:24,000-scale that includes decriptive information regarding the character of the erosion (severity, slope, geologic factors) at selected locations through out the state. The layer is based on information collected and compiled during October-December, 2005 while field testing the applicability of the Erosion Susceptilibity layer developed as part of Project #03-02 Statewide GIS Analysis and Mapping of the Geologic Conditions Contributing to Eroding Terrace Escarpments. The layer represents conditions at a particular point in time. The layer includes 83 locations and descriptive attributes (site name, severity of erosion, description, etc) as well as attributes from a spatial join with merged soils and quaternary geology layers. Features are point locations that represent the selected study areas within the state; it is NOT a comprehensive inventory of erosion locations. Data is compiled at 1:24,000 scale. This data is not updated.
Broadband Availability by Tract 2025

<h1>Broadband Availability Data — Tract-Level Summary</h1><h3>What the dataset includes</h3><p><strong>Location counts</strong></p><ul><li>Total broadband serviceable locations</li><li>Number of providers&nbsp;</li><li>Counts of unserved, underserved, and served locations</li><li>Locations capable of gigabit, near-gigabit, or meeting the state’s 1000/100 Mbps goal</li></ul><p>&nbsp;</p><p><strong>Technology availability</strong></p><ul><li>Presence of major FCC technology codes:<br />copper/DSL (10), cable (40), fiber (50), and Fixed Wireless Access (71)</li><li>Percent of locations served by each technology type</li></ul><p>&nbsp;</p><p><strong>Speed statistics</strong></p><ul><li>Maximum, minimum, median, and 75th percentile advertised download and upload speeds</li></ul><p>&nbsp;</p><p><strong>Provider information</strong></p><ul><li>All providers present</li><li>Providers offering gigabit, ≥100/20 Mbps, or ≥1Gbps/100 Mbps service</li></ul>
Impaired River 2022

<p style='background:white;'><span style='font-family:&quot;inherit&quot;, serif; color:rgb(76, 76, 76);'><font size='3'>Connecticut 303(d) Impaired Waters
2022 is a subset of Connecticut 305(b) Assessed Waters 2022. If any one of the
assigned designated uses is categorized as NOT Supporting, the assessed
waterbody is included in this subset and is considered impaired. Additional
information about Integrated Water Quality reporting is available on the CT
DEEP website, <a href='https://portal.ct.gov/DEEP/Water/Water-Quality/Water-Quality-305b-Report-to-Congress' style='text-decoration-line:none;' rel='nofollow ugc'><span style='color:#0079C1;'>Integrated Water
Quality Report</span></a> page. </font></span></p><p style='background:white;'><span style='font-family:&quot;inherit&quot;, serif;'><font size='3'>Connecticut 305(b) Assessed Waters
files includes rivers, lakes and estuaries that have been assessed in
compliance with Sections 305(b) and 303(d) of the federal Clean Water Act.
Section 305(b) of the Clean Water Act requires each state to monitor, assess
and report on the quality of its waters relative to attainment of designated
uses established by the State's water quality standards. Section 303(d)
requires each State to compile a subset of that list identifying only those
waters not meeting water quality standards and assign a Total Maximum Daily
Load (TMDL) priority ranking to each impaired waterbody.</font></span></p><p style='background:white;'><span style='font-family:&quot;inherit&quot;, serif;'><font size='3'>This assessment is based on
information collected and compiled prior to 2022. It represents conditions at a
particular point in time and does not represent current conditions. Depending
on the type of waterbody - river, lake, or estuary - this information
geographically displays attainment and non-attainment (e.g. full supporting,
not supporting, not assessed) for each designated use - aquatic life, marine
aquatic life, recreation use, fish consumption, shellfish harvesting, and
drinking water supply.</font></span></p>
Phragimites 1968

Phragmites 1968 is a 1:12,000-scale, polygon feature-based layer that includes areas where phragmites existed in 1968 along the lower Connecticut River corridor from the towns of Portland and Cromwell south to Long Island Sound. This layer was published at the same time as the Phragmites 1994 layer in order to depict the historic differences in phragmites growth between 1968 and 1994. The Phragmites 1968 layer was compiled using 1:12,000 black and white digital orthophotos obtained in 1968 as part of a Connecticut Department of Environmental Protection aerial mapping survey. This data represents a particular point in time (1968). It is not updated and does not depcit current conditions. Features are polygon locations that represent the approximate location of phragmites growth in 1968. Attribute information is comprised of the NAME68 attribute that identifies one of 25 general locations of phragmites growth. Other attributes include AV_LEGEND that depicts the existence of phragmites, and ACREAGE that depicts the size of each polygon in acres. Data was compiled at a 1:12,000 scale.
Impaired Lake 2020

<p><font size='2'>Connecticut 303(d) Impaired Waters 2020 is a subset of
Connecticut 305(b) Assessed Waters 2020. If any one of the assigned designated
uses is categorized as NOT Supporting, the assessed waterbody is included in
this subset and is considered impaired. Additional information about Integrated
Water Quality reporting is available on the CT DEEP website, <a href='https://portal.ct.gov/DEEP/Water/Water-Quality/Water-Quality-305b-Report-to-Congress' rel='nofollow ugc'>Integrated
Water Quality Report</a> page. </font></p>

<p><font size='2'>Connecticut 305(b) Assessed Waters files includes rivers,
lakes and estuaries that have been assessed in compliance with Sections 305(b)
and 303(d) of the federal Clean Water Act. Section 305(b) of the Clean Water
Act requires each state to monitor, assess and report on the quality of its
waters relative to attainment of designated uses established by the State's
water quality standards. Section 303(d) requires each State to compile a subset
of that list identifying only those waters not meeting water quality standards
and assign a Total Maximum Daily Load (TMDL) priority ranking to each impaired
waterbody.</font></p>

<p><font size='2'>This assessment is based on information collected and compiled
prior to 2020. It represents conditions at a particular point in time and does
not represent current conditions. Depending on the type of waterbody - river,
lake, or estuary - this information geographically displays attainment and
non-attainment (e.g. full supporting, not supporting, not assessed) for each
designated use - aquatic life, marine aquatic life, recreation use, fish
consumption, shellfish harvesting, and drinking water supply.</font></p>
American Rescue Plan Project Inventory

This dataset contains a tabular version of the Project Inventory that appears in the state of Connecticut's Annual Recovery Performance Plans submitted to the US Treasury Department. This inventory includes each project's ID number as well as a description of the project, its budget, and any performance updates available as of July 31, 2025.

https://portal.ct.gov/opm/coronavirus/coronavirus-relief-fund/american-rescue-plan-act-of-2021

<a href="https://portal.ct.gov/-/media/datapolicy/arpa/recovery-plan-performance-reports/ct2023-slfrf-recovery-plan-performance-report-final.pdf">Connecticut's 2023 Recovery Plan Performance Report</a>
<a href="https://portal.ct.gov/-/media/datapolicy/arpa/recovery-plan-performance-reports/2024-slfrf-recovery-plan-performance-report-final-1.pdf">Connecticut's 2024 Recovery Plan Performance Report</a>
<a href="https://portal.ct.gov/-/media/datapolicy/arpa/recovery-plan-performance-reports/ct2025-recovery-plan-performance-report-final.pdf">Connecticut's 2025 Recovery Plan Performance Report</a>
Eelgrass Beds 2002 Polygon

Eelgrass Beds 2002 Set:

Field Verification of Eelgrass beds, located in the Long Island Sound, Eastern shore of Connecticut from Clinton Harbor to the Rhode Island State border, Fishers Island NYS and Eastern portion of the Northshore of Long Island NYS.

Interpretation and identification of Eelgrass beds located in the Long Island Sound Eastern Connecticut shoreline, Fishers Island NYS and the Northshore of Long Island NYS. Generated from 1:20,000 True Color Aerial Photography, 6/18/02.
Eelgrass Beds Historic Points

Eelgrass Beds Historic Set:



Historic Eelgrass Points is a 1:24,000-scale, point feature-based layer that depicts the locations of historic eelgrass beds (Zostera marina) in Long Island Sound, the Connecticut River, the Quinnipiac River and other bays, harbors and waterbodies in Connecticut's coastal area. It also includes several points located along the north shore of Long Island. There are a total of 131 point features, the majority of which are located east of the Connecticut River. Point features in this layer are compiled from two major sources: 1) the polygon feature label points in the Historic Eelgrass Beds polygon layer representing sources with a mapping component; and 2) additional points that were based on historic literature review that had no mapping component. Source information including source description and collection date for each point is described in the layer's table data. Feature locations are inexact. Because of the variety of source maps and methods used for their automation, this coverage should be considered to have limited spatial accuracy and is appropriate for general uses only. Actual data collection ranged from 1873 through 1996. This layer was published in 1997 and is not updated. It does not represent current conditions.

Historic Eelgrass Bed Polygons is a 1:24,000-scale, polygon feature-based layer that depicts the locations of historic eelgrass beds (Zostera marina) in Long Island Sound and the Niantic River, as well as in other bays, harbors and waterbodies in Connecticut's coastal area. It also includes several points located along the north shore of Long Island. There are a total of 52 polygon features, all of which (except the Long Island points), are located within or east of the Niantic River. This layer can be used with Historic Eelgrass Points. This layer does not represent current conditions. Rather, it depicts historic eelgrass bed locations that were observed and defined either cartographically or narratively over the course of many years and from various sources. The dates of each source's data collection are noted in the attribute table. Feature locations are inexact. Because of the variety of source maps and methods used for their automation, this information should be considered to have limited spatial accuracy and is appropriate for general uses only. The data was taken from maps of various scales and projections that were drawn between 1905 and 1996. These maps were reduced to approximately 1:24,000 scale and adjusted for best fit; eelgrass areas were redrafted onto USGS Topographic Quadrangle maps for digitizing. In order to create a single polygon coverage, areas were considered to represent a maximum extent of eelgrass beds. This layer was published in 1997 and is not updated.
2015 Developed Land Cover

This service is published by <a href='https://clear.uconn.edu' target='_blank' rel='nofollow ugc noopener noreferrer'>UConn CLEAR</a> and is made available on <a href='https://cteco.uconn.edu' target='_blank' rel='nofollow ugc noopener noreferrer'>CTECO</a>. The thematic raster has multiple classes that represent different land covers. This dataset is part of <a href='https://clear.uconn.edu/projects/landscape/' target='_blank' rel='nofollow ugc noopener noreferrer'>Changing Landscape</a> series which includes 7 dates of land cover spanning 30 years, from 1985 to 2015, including change and statistics.  <div><br /><div><div><font color='#104c9b'><b>2015 Land Cover</b></font><b><font color='#104C9B'> Dataset</font></b></div><div><div><b>Extent:</b> Connecticut</div><div><div><b>Classes:</b> 12 classes include developed, turf &amp; grass, other grasses, agricultural field, deciduous forest, coniferous forest, water, non-forested wetland, forested wetland, tidal wetland, barren and utility right-of-way. See <a href='https://clear.uconn.edu/projects/landscape/classes/' target='_blank' rel='nofollow ugc noopener noreferrer'>Land Cover Classes</a> for detailed descriptions. </div><div><b>Date:</b> Land cover created from 2015 Landsat satellite imagery</div></div><div><b>Pixel Resolution: </b>100 feet</div><div><b>Projection: </b>CT State Plane NAD 83 feet (EPSG 2234)</div></div><div><br /></div><div><b><font color='#104C9B'>More Information</font></b></div><div>- <a href='https://clear.uconn.edu/projects/landscape/classes/' target='_blank' rel='nofollow ugc noopener noreferrer'>Land Cover Classes</a></div><div>- <a href='https://clear.uconn.edu/projects/landscape/about/faq/' target='_blank' rel='nofollow ugc noopener noreferrer'>Land Cover FAQs</a><br /></div><div>- <a href='https://s.uconn.edu/landcoverviewer' target='_blank' rel='nofollow ugc noopener noreferrer'>Land Cover Viewer</a></div><div>- <a href='https://clear.uconn.edu/projects/landscape/ct-stats/' target='_blank' rel='nofollow ugc noopener noreferrer'>Numbers and Charts</a></div><div>- <a href='https://clear.uconn.edu/projects/landscape/about/metadata/' target='_blank' rel='nofollow ugc noopener noreferrer'>Metadata </a></div><div>- <a href='https://clear.uconn.edu/projects/landscape/download/' target='_blank' rel='nofollow ugc noopener noreferrer'>Download</a></div><div><div><b><font color='#104C9B'><br /></font></b></div><div><b><font color='#104C9B'>Credit and Funding</font></b><br /></div><div>CLEAR's Changing Landscape has been comprised of a series of projects funded over its 20 year extent by both state and federal agencies, and by support from the University of Connecticut. It is not practicable to list the specifics of each grant separately, but funding agencies include U.S. Environmental Protection Agency, National Aeronautics and Space Administration (NASA), National Oceanic and Atmospheric Administration (NOAA), Long Island Sound Study, New England Interstate Water Pollution Control Commission, and the Connecticut Department of Energy and Environmental Protection.</div></div></div></div>
COVID-19 Cases in CT Schools (State Summary), 2021-2022 School Year - Archive

This dataset provides the following measures related to COVID-19 in CT public and private PK-12 schools for the latest week-long reporting period during the 2021-2022 school year:

Number of student cases - total
Number of student cases - fully vaccinated
Number of student cases - not vaccinated
Number of student cases - no vaccine information

Number of staff cases - total
Number of staff cases - fully vaccinated
Number of staff cases - not vaccinated
Number of staff cases - no vaccine information

Data for the 2020-2021 school year is available here: https://data.ct.gov/Health-and-Human-Services/COVID-19-Cases-in-CT-Schools-State-Summary-2020-20/vvjf-9vkr

June 30, 2022 is the last report for the 2021 – 2022 academic school year.
Prescription Monitoring Program: Schedule IV Drug Prescriptions Dispensed

This dataset includes the amount of Schedule IV prescription drugs dispensed over a 3-month span, with the quarter ending March 2023. On the controlled substance Schedule II-V; Schedule IV prescription drugs have a low potential for abuse and low risk for dependence. Schedule IV drugs may be used for pain control. It only includes dispensations to CT residents reported to the CT Prescription Monitoring & Reporting System (CPMRS).
Environmental Monitoring Results for Radioactivity:  Other Samples

- Reporting units of sample results [where 1 picoCurie (pCi) = 1 trillionth (1E-12) Curie (Ci)]: 
 •  Other samples are reported in pCi/g.

- Data Quality Disclaimer: 
This database is for informational use and is not a controlled quality database. Efforts have been made to ensure accuracy of data in the database; however, errors and omissions may occur.

Examples of potential errors include: 
• Data entry errors. 
• Lab results not reported for entry into the database. 
• Missing results due to equipment failure or unable to retrieve samples due to lost or environmental hazards. 
• Translation errors – the data has been migrated to newer data platforms numerous times, and each time there have been errors and data losses.

- Error Results  are the calculated uncertainty for the sample measurement results and are reported as (+/-).

- Environmental Sample Records are from the year 1998 until present. Prior to 1998 results were stored in hardcopy, in a non-database format.

Requests for results from samples taken prior to 1998 or results subject to quality assurance are available from archived records and can be made through the DEEP Freedom of Information Act (FOIA) administrator at deep.foia@ct.gov. Information on 
FOIA requests can be found on the DEEP website.

FOIA Administrator 
Office of the Commissioner 
Department of Energy and Environmental Protection 
79 Elm Street, 3rd Floor 
Hartford, CT 06106
CT Geodata Portal

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. <div><br /></div><div>The Geodata portal aims to provide residents, policymakers, and researchers easy access to foundational geospatial datasets and promote open data principles. </div>
Connecticut Mainland Lines

Connecticut Mainland Line includes the line features of a layer named Connecticut Mainland. Connecticut Mainland is a 1:24,000-scale, polygon and line feature-based layer that depicts the geographic area encompassed by and the boundary for the State of Connecticut with an additional linear shoreline feature separating the Connecticut mainland from the waters of Long Island Sound. The layer includes a polygon feature representing the Connecticut mainland, a polygon feature representing Connecticut waters in Long Island Sound and approximately 700 polygon features representing Connecticut islands in Long Island Sound. The layer is based on information from USGS topographic quadrangle maps published between 1969 and 1984 and latitude and longitude coordinates that define the boundary between the states of Connecticut and New York in Long Island Sound. Feature length and geographic area are encoded for linear and polygon features, respectively. This layer was originally published in 2005.

Connecticut Mainland Polygon includes the polygon features of a layer named Connecticut Mainland. Connecticut Mainland is a 1:24,000-scale, polygon and line feature-based layer that depicts the geographic area encompassed by and the boundary for the State of Connecticut with an additional linear shoreline feature separating the Connecticut mainland from the waters of Long Island Sound. The layer includes a polygon feature representing the Connecticut mainland, a polygon feature representing Connecticut waters in Long Island Sound and approximately 700 polygon features representing Connecticut islands in Long Island Sound. The layer is based on information from USGS topographic quadrangle maps published between 1969 and 1984 and latitude and longitude coordinates that define the boundary between the states of Connecticut and New York in Long Island Sound. Feature length and geographic area are encoded for linear and polygon features, respectively. This layer was originally published in 2005.
Neglected Cemetery Awards

<a href="https://www.cga.ct.gov/current/pub/chap_368j.htm#sec_19a-308b">C.G.S. Sec. 19a-308b</a> established the Neglected Cemetery Account and authorizes the Office of Policy and Management to make grants to eligible municipalities for the purpose of municipal maintenance of neglected burial grounds and cemeteries, as described in C.G.S. Sec. 19a-308. The program is funded from death certificate fees collected by the Department of Public Health, pursuant to C.G.S. §7-74(b)(2).
CMT School Performance: 2013

This dataset contains the school classifications, school performance indices (SPIs), and SPI target attainment status for 2012-13 for all schools that administered the Connecticut Mastery Test (CMT). It also includes school classifications assigned to elementary/middle schools with non-tested grades. These data were published in the School Performance Reports released by the CT State Department of Education (CSDE) in December 2013 (see http://www.csde.state.ct.us/public/performancereports/20122013reports.asp)

Note: Target attainment status says “n/a” if there is no 2012-13 SPI target or if there is no 2012-13 SPI, which happens when there are small N sizes for a particular subgroup or subject.