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MD iMAP: Maryland Bathymetry - Chesapeake Bay Contours
opendata.maryland.gov | Last Updated 2020-01-25T00:30:22.000ZThis is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Bathymetry for Chesapeake Bay was derived from two hundred ninety-seven surveys containing 3 - 178 - 509 soundings. Thirty-five older - less accurate - overlapping surveys were entirely omitted before tinning. Partial overlap from other older - less accurate surveys was also omitted prior to tinning. The surveys used dated from 1859 to 1993. Thirty-six surveys dated from 1859 to 1918 - thirty-seven from the 1930s - ninety-one from the 1940s - sixty- six from the 1950s - twenty-five from the 1960s - twenty-four from the 1970s - fourteen from the 1980s - and four from the 1990s. The total range of sounding data was 3.7 meters to -50.4 meters at mean low water. Mean high water values between 0.2 and 1.2 meters were assigned to the shoreline. Fifteen points were found that were not consistent with the surrounding data and were removed prior to tinning. DEM grid values outside the shoreline (on land) were assigned null values (-32676). Chesapeake Bay has two hundred eighteen 7.5 minute DEMs and ten one degree DEMs. The 1 degree DEMs were generated from the higher resolution 7.5 minute DEMs which covered the estuary. A Digital Elevation Model (DEM) contains a series of elevations ordered from south to north with the order of the columns from west to east. The DEM is formatted as one ASCII header record (A- record) - followed by a series of profile records (B- records) each of which include a short B-record header followed by a series of ASCII integer elevations (typically in units of 1 centimeter) per each profile. The last physical record of the DEM is an accuracy record (C- record). The 7.5-minute DEM (30- by 30-m data spacing) is cast on the Universal Transverse Mercator (UTM) projection. It provides coverage in 7.5- by 7.5-minute blocks. Each product provides the same coverage as a standard USGS 7.5-minute quadrangle but the DEM contains over edge data. Coverage is available for many estuaries of the contiguous United States but is not complete.This layer was modified from its original form. Please see lineage section for details.Not to be used for Navigation. Acknowledgment of the National Oceanic and Atmospheric Administration- Nation Ocean Service would be appreciated in products derived from these data. The datum for these bathymetric DEMs is not the same as that used by the US Geological survey (USGS) for land based DEMs which results in a discontinuity if the two datasets are merged together. Moreover - the shoreline for the USGS DEMs is indeterminate and not the same as that used for the Bathymetric DEMs. The data within the bathymetry file is floating point. When using the data within a GIS care must be taken to ensure that the data are being read as floating point and not integer data. Last Updated: Feature Service Layer Link: http://geodata.md.gov/imap/rest/services/Elevation/MD_Bathymetry/MapServer/0 ADDITIONAL LICENSE TERMS: The Spatial Data and the information therein (collectively "the Data") is provided "as is" without warranty of any kind either expressed implied or statutory. The user assumes the entire risk as to quality and performance of the Data. No guarantee of accuracy is granted nor is any responsibility for reliance thereon assumed. In no event shall the State of Maryland be liable for direct indirect incidental consequential or special damages of any kind. The State of Maryland does not accept liability for any damages or misrepresentation caused by inaccuracies in the Data or as a result to changes to the Data nor is there responsibility assumed to maintain the Data in any manner or form. The Data can be freely distributed as long as the metadata entry is not modified or deleted. Any data derived from the Data must acknowledge the State of Maryland in the metadata.
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Section Heatmap of MDTA Accidents
opendata.maryland.gov | Last Updated 2023-12-13T02:53:46.000ZIncludes accidents that occured on MD Transportation Authority (MDTA) facilities, or were within a concurrent jurisdiction and were responded to by MDTA Police. MDTA facilities are the Francis Scott Key Bridge (I-695), John F. Kennedy Memorial Highway (I-95), Thomas J. Hatem Memorial Bridge (US 40), Fort McHenry Tunnel (I-95), Baltimore Harbor Tunnel (I-895), the Bay Bridge (US 50/301), Governor Harry W. Nice Memorial Bridge (US 301), and Intercounty Connector (ICC/MD200). MDTA Police are also responsible for accidents at BWI Airport and the Port of Baltimore. This dataset will be updated monthly by the MD Transportation Authority
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MDTA Accidents
opendata.maryland.gov | Last Updated 2023-04-12T13:22:44.000ZIncludes accidents that occured on MD Transportation Authority (MDTA) facilities, or were within a concurrent jurisdiction and were responded to by MDTA Police. MDTA facilities are the Francis Scott Key Bridge (I-695), John F. Kennedy Memorial Highway (I-95), Thomas J. Hatem Memorial Bridge (US 40), Fort McHenry Tunnel (I-95), Baltimore Harbor Tunnel (I-895), the Bay Bridge (US 50/301), Governor Harry W. Nice Memorial Bridge (US 301), and Intercounty Connector (ICC/MD200). MDTA Police are also responsible for accidents at BWI Airport and the Port of Baltimore. This dataset will be updated monthly by the MD Transportation Authority
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MD iMAP: Maryland Census Data - ZIP Code Tabulation Areas (ZCTAs)
opendata.maryland.gov | Last Updated 2020-01-25T00:25:52.000ZThis is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. The units of geography used for the 2010 Census maps displayed here are the Zip Code Tabulation Area (ZCTA). ZCTAs are statistical geographic areas produced by the Census Bureau by aggregating census blocks to create generalized areas closely resembling the U.S. Postal Service's postal zip codes. The data collected on the short form survey are general demographic characteristics such as age - race - ethnicity - household relationship - housing vacancy and tenure (owner/renter).Feature Service Link:http://geodata.md.gov/imap/rest/services/Demographics/MD_CensusData/FeatureServer/1 ADDITIONAL LICENSE TERMS: The Spatial Data and the information therein (collectively "the Data") is provided "as is" without warranty of any kind either expressed implied or statutory. The user assumes the entire risk as to quality and performance of the Data. No guarantee of accuracy is granted nor is any responsibility for reliance thereon assumed. In no event shall the State of Maryland be liable for direct indirect incidental consequential or special damages of any kind. The State of Maryland does not accept liability for any damages or misrepresentation caused by inaccuracies in the Data or as a result to changes to the Data nor is there responsibility assumed to maintain the Data in any manner or form. The Data can be freely distributed as long as the metadata entry is not modified or deleted. Any data derived from the Data must acknowledge the State of Maryland in the metadata.
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MD iMAP: Maryland Census Data - Census Tracts
opendata.maryland.gov | Last Updated 2020-01-25T00:18:34.000ZThis is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. The units of geography used for the 2010 Census maps displayed here are the Census tracts. Census tracts generally have a population size between 1 - 200 and 8 - 000 people - with an optimum size of 4 - 000 people. When first delineated - census tracts were designed to be homogeneous with respect to population characteristics - economic status - and living conditions. Census tract boundaries generally follow visible and identifiable features. State and county boundaries always are census tract boundaries in the standard census geographic hierarchy. In a few rare instances - a census tract may consist of noncontiguous areas. The data collected on the short form survey are general demographic characteristics such as age - race - ethnicity - household relationship - housing vacancy and tenure (owner/renter).Feature Service Link:http://geodata.md.gov/imap/rest/services/Demographics/MD_CensusData/FeatureServer/0 ADDITIONAL LICENSE TERMS: The Spatial Data and the information therein (collectively "the Data") is provided "as is" without warranty of any kind either expressed implied or statutory. The user assumes the entire risk as to quality and performance of the Data. No guarantee of accuracy is granted nor is any responsibility for reliance thereon assumed. In no event shall the State of Maryland be liable for direct indirect incidental consequential or special damages of any kind. The State of Maryland does not accept liability for any damages or misrepresentation caused by inaccuracies in the Data or as a result to changes to the Data nor is there responsibility assumed to maintain the Data in any manner or form. The Data can be freely distributed as long as the metadata entry is not modified or deleted. Any data derived from the Data must acknowledge the State of Maryland in the metadata.
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MDTA Structurally Deficient Bridges - 2011 to 2014
opendata.maryland.gov | Last Updated 2023-04-12T13:38:38.000ZThis measure provides the number of structurally deficient bridges and number of total bridges owned by MDTA. The latitude and longitude is also provided for the structurally deficient bridges. The MDTA's Annual Inspection Report consists of a walk/climb through physical inspection resulting in a thorough hands-on inspection of all structures, roadways, tunnels and tunnel ventilation buildings (including the mechanical and electrical systems), drainage structures, toll plazas, Variable Message Signs (VMS), incident detection equipment housings and structures, retaining walls, noise barriers, traffic and safety equipment, and truck weigh scales under the jurisdiction of the Maryland Transportation Authority at the following facilities: I-95 (John F. Kennedy Memorial Highway), I-895 (Baltimore Harbor Tunnel Thruway), Seagirt Marine Terminal, Thomas J. Hatem Memorial Bridge, I-395 and I-95 in Baltimore City (Fort McHenry Tunnel), I-695 (Francis Scott Key Bridge), Harry W. Nice Memorial Bridge, the Bay Bridge (twin structures) and the Intercounty Connector (ICC/MD200). The annual inspection process includes the development of a Structural Inventory and Appraisal (SI&A) assessment that is submitted to the Federal Highway Administration each April for the preceding calendar year.The data for this measure is collected from the SI&A assessment that is performed yearly by the MDTA's facilities inspection consultant. The MDTA continued to be successful in having 100 percent of its bridges fully operational and functioning (no weight restrictions), allowing all emergency vehicles, school buses, vehicles serving the economy of an area, and legally loaded vehicles to safely traverse. Bridges are considered structurally deficient if significant load carrying elements are found to be in a poor (or worse) condition due to deterioration and/or damage, or have a low weight restriction. The fact that a bridge is structurally deficient does not imply that it is unsafe. Data submitted for the CY are provided in February, but the data is not provided to FHWA until April. In some cases, the number could change if repairs are made to a structurally deficient bridge.
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MD iMAP: Maryland Election Boundaries - Maryland Legislative Districts 2012
opendata.maryland.gov | Last Updated 2020-01-25T00:30:33.000ZThis is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. Polygon layer contains the 2012 Maryland State Legislative Districts.Feature Service Link:http://geodata.md.gov/imap/rest/services/Boundaries/MD_ElectionBoundaries/FeatureServer/1 ADDITIONAL LICENSE TERMS: The Spatial Data and the information therein (collectively "the Data") is provided "as is" without warranty of any kind either expressed implied or statutory. The user assumes the entire risk as to quality and performance of the Data. No guarantee of accuracy is granted nor is any responsibility for reliance thereon assumed. In no event shall the State of Maryland be liable for direct indirect incidental consequential or special damages of any kind. The State of Maryland does not accept liability for any damages or misrepresentation caused by inaccuracies in the Data or as a result to changes to the Data nor is there responsibility assumed to maintain the Data in any manner or form. The Data can be freely distributed as long as the metadata entry is not modified or deleted. Any data derived from the Data must acknowledge the State of Maryland in the metadata.
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MD iMAP: Maryland Election Boundaries - US Congressional Districts 2011
opendata.maryland.gov | Last Updated 2020-01-25T00:30:26.000ZThis is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. Polygon layer contains the 2011 United States Congressional Districts in the State of Maryland.Feature Service Link:http://geodata.md.gov/imap/rest/services/Boundaries/MD_ElectionBoundaries/FeatureServer/0 ADDITIONAL LICENSE TERMS: The Spatial Data and the information therein (collectively "the Data") is provided "as is" without warranty of any kind either expressed implied or statutory. The user assumes the entire risk as to quality and performance of the Data. No guarantee of accuracy is granted nor is any responsibility for reliance thereon assumed. In no event shall the State of Maryland be liable for direct indirect incidental consequential or special damages of any kind. The State of Maryland does not accept liability for any damages or misrepresentation caused by inaccuracies in the Data or as a result to changes to the Data nor is there responsibility assumed to maintain the Data in any manner or form. The Data can be freely distributed as long as the metadata entry is not modified or deleted. Any data derived from the Data must acknowledge the State of Maryland in the metadata.
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Lobbying Reporting System: Maryland Campaign Contributions - November 1 2005 to April 30, 2019
opendata.maryland.gov | Last Updated 2020-01-25T00:27:11.000ZThis dataset shows all campaign contributions made to Maryland political candidates and organizations, starting November 1 2005 (reporting periods begin each November 1st). Data are provided by the Maryland State Ethics Commission. To view the most current data, please visit: http://search.lobby.ethics.state.md.us:8080/search. A lobbying year runs from November 1 through October 31. Activity reports are filed for each six-month period from November 1 to April 30 and May 1 to October 31.
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Maryland African American Heritage Preservation Program Grants, FY 2012 - FYTD 2017
opendata.maryland.gov | Last Updated 2018-10-16T17:10:33.000ZMaryland African American Heritage Preservation Programs Grants for the fiscal year of 2012 and 2013. The data includes the area location and the amount of the grant that was awarded.