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MD iMAP: Maryland Shoreline Changes - Transects
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. To quantify rates of change (erosion or accretion) along coastal and estuarine shorelines in Maryland - the Maryland Geological Survey (MGS) - in conjunction with Towson University's Center for Geographic Information Sciences (CGIS) and the U.S. Geological Survey (USGS) - installed and ran a computer program - the Digital Shoreline Analysis System (DSAS) - using as input a series of digital shoreline vectors dating from 1841-1995. Shorelines were derived from three sources: (1) maps from a Historical Shorelines and Erosion Rates Atlas (Conkwright - 1975) - (2) Coastal Survey maps (topographic or T-sheets) produced by the National Ocean Service (NOS) - a branch of the National Oceanic and Atmospheric Administration (NOAA) - and (3) a digital wetlands delineation based on photo interpretation of digital orthophoto quarter quads. DSAS constructed a 'baseline' landward of and approximately parallel to the shorelines - inserted nodes every 20 m along the baseline - and cast straight-line transects from each node - perpendicular to the baseline - across the shorelines. Based on the time elapsed and the along-transect distance between shoreline pairs - DSAS calculated rates of change for each transect. Last Updated: Feature Service Layer Link: http://geodata.md.gov/imap/rest/services/Hydrology/MD_ShorelineChanges/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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MD iMAP: Maryland Shoreline Changes - Historic Shorelines
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This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Digital shoreline vectors derived from bromide or mylar copies of National Ocean Service T-sheets or hydrographic surveys. Area covered includes Chesapeake Bay and tidal tributary shorelines along the western side of the Chesapeake Bay and five 7.5' quadrangles on the lower eastern shore of the Chesapeake Bay. Last Updated: Feature Service Layer Link: http://geodata.md.gov/imap/rest/services/Hydrology/MD_ShorelineChanges/MapServer/2 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.
MD iMAP: Riparian Land Use
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This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. Shoreline Situation Reports (SSR) is intended to assist planners - managers - and regulators in decisions pertaining to management of coastal areas and natural resources therein. Data collected describes conditions in the immediate riparian zone - the bank - and along the shore. Map Service Link: http://geodata.md.gov/imap/rest/services/Hydrology/MD_ShorelineInventory/MapServer 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.
MD iMAP: Phragmites
공공데이터포털
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. Shoreline Situation Reports (SSR) is intended to assist planners - managers - and regulators in decisions pertaining to management of coastal areas and natural resources therein. Data collected describes conditions in the immediate riparian zone - the bank - and along the shore. Map Service Link: http://geodata.md.gov/imap/rest/services/Hydrology/MD_ShorelineInventory/MapServer 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.
MD iMAP: Maryland Marine Boundaries - Shoreline
공공데이터포털
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. In 2000 - the Maryland Geological Survey (MGS) was awarded a Coastal ZoneManagement grant to complete the acquisition of a recent (ca. 1990) digital shoreline for the coastal regions of Maryland - the Chesapeake Bay - its tributaries - the coastal bays - and the Atlantic coast.MGS contracted the services of EarthData International - Inc. (EDI) of Gaithersburg - Md. - to extract shorelines from an existing wetlands delineation - which was based on photo interpretation of 3.75-minute digital orthophoto quarter quads (DOQQs). In areas where a wetlands coverage was not yet available - EDI interpreted shorelines directly from the orthophotography. DOQQ registration (Maryland State Plane Coordinate System - NAD 83 - meters) was transferred automatically to the shoreline vectors. Following shoreline extraction or interpretation - EDI assigned attributes to the vectors based on shoreline type: beach - vegetated - structure - or water's edge. This data set has been merged into a state wide file for ease of processing and decision making.Feature Service Link:http://geodata.md.gov/imap/rest/services/Boundaries/MD_MarineBoundaries/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.
MD iMAP: Access Structures
공공데이터포털
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. Shoreline Situation Reports (SSR) is intended to assist planners - managers - and regulators in decisions pertaining to management of coastal areas and natural resources therein. Data collected describes conditions in the immediate riparian zone - the bank - and along the shore. Map Service Link: http://geodata.md.gov/imap/rest/services/Hydrology/MD_ShorelineInventory/MapServer 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.
MD iMAP: Maryland Littoral Drift Maps - Littoral Drift Maps
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This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. The shoreline and littoral conditions maps were produced in 1982 as part of a study of shore erosion in the northern Chesapeake Bay - that is - the Maryland part of the Bay (Wang et al - 1982). In the early 1990s - the Maryland Geological survey contracted the services of a private company to scan and georeference 56 shoreline and littoral conditions maps.Feature Service Link:http://geodata.md.gov/imap/rest/services/Geoscientific/MD_LittoralDriftMaps/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.
MD iMAP: Stabilization Structures
공공데이터포털
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. Shoreline Situation Reports (SSR) is intended to assist planners - managers - and regulators in decisions pertaining to management of coastal areas and natural resources therein. Data collected describes conditions in the immediate riparian zone - the bank - and along the shore. Map Service Link: http://geodata.md.gov/imap/rest/services/Hydrology/MD_ShorelineInventory/MapServer 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.
MD iMAP: Maryland Watersheds - Maryland Coastal Zone
공공데이터포털
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. The Maryland coastal zone is comprised of the land - water and subaqueous land between the territorial limits of Maryland in the Chesapeake Bay - Atlantic Coastal Bays and the Atlantic Ocean - as well as the towns - cities and counties that contain and help govern the thousands of miles of Maryland shoreline. The Maryland coastal zone extends from three miles out in the Atlantic Ocean to the inland boundaries of the 16 counties and Baltimore City that border the Atlantic Ocean - Chesapeake Bay and the Potomac River up to the District of Columbia. This area encompasses two-thirds of the State s land area and is home to almost 70% of Maryland's residents. Feature Service Layer Link: http://geodata.md.gov/imap/rest/services/Hydrology/MD_Watersheds/FeatureServer/4 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.
MD iMAP: Maryland Waterbodies - Lakes (Generalized)
공공데이터포털
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Polygon boundaries of lakes (generalized shape) in Maryland. Last Updated: Feature Service Layer Link: http://geodata.md.gov/imap/rest/services/Hydrology/MD_Waterbodies/MapServer/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.
MD iMAP: Shoreline Bank Height and Condition
공공데이터포털
This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. Shoreline Situation Reports (SSR) is intended to assist planners - managers - and regulators in decisions pertaining to management of coastal areas and natural resources therein. Data collected describes conditions in the immediate riparian zone - the bank - and along the shore. Map Service Link: http://geodata.md.gov/imap/rest/services/Hydrology/MD_ShorelineInventory/MapServer 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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