© Dorchester County GIS

Geographic Extent: SANDY_Restoration_DE_MD_QL2 Area of Interest covers approximately 3.096 square miles. Lot #5 contains the full project area Dataset Description: The SANDY_Restoration_DE_MD_QL2 project called for the Planning, Acquisition, processing and derivative products of LiDAR data to be collected at a nominal pulse spacing (NPS) of 0.7 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LiDAR Specification, Version 1. The data was developed based on a horizontal projection/datum of State Plane Zone Maryland (1900), NAD83, feet and vertical datum of NAVD1988 (GEOID12A), feet. LiDAR data was delivered in RAW flight line swath format, processed to create Classified LAS 1.2 Files formatted to 3842 individual 1500m x 1500m tiles, and corresponding Intensity Images and Bare Earth DEMs tiled to the same 1500m x 1500m schema, and Breaklines in ESRI shapefile format. Ground Conditions: LiDAR was collected in Winter 2013 / Spring 2014, while no snow was on the ground and rivers were at or below normal levels. In order to post process the LiDAR data to meet task order specifications, Quantum Spatial established a total of 78 QA control points and 99 Land Cover control points that were used to calibrate the LiDAR to known ground locations established throughout the SANDY_Restoration_DE_MD_QL2 project area.This is a MD iMAP hosted service. Find more information at https://imap.maryland.gov.Image Service Link: https://mdgeodata.md.gov/lidar/rest/services/Dorchester/MD_dorchester_slope_m/ImageServer

Parcels and Land Ownership dataset current as of 2011. Dorchester County Parcel Lines - some records include distance and direction (COGO information).

This data was developed in response to citizens’ road maintenance requests from across the state as to whom to contact as the official maintenance authority - be it MDOT State Highway Administration, MDOT Transportation Authority, a county, or a municipality.MDOT SHA Website

Watershed Boundaries dataset current as of 2009. Dorchester County Watershed Boundaries (Source: USGS).

Navigation Aids dataset current as of 2008. Dorchester County Channel Markers - Planimetric Data.

Road Edge of Pavement dataset current as of 2008. Dorchester County Edge of Pavement - Planimetric Data.

Road Bridges and Culverts dataset current as of 2008. Dorchester County Bridges - Planimetric Data.

Aerial Cartographics of America, Inc. collected LiDAR for over 681 square miles in Accomack, Dorchester, Somerset, Sussex, Wicomico, and Worchester Counties in Maryland, Delaware and Virginia. The nominal pulse spacing for this project was no greater than 0.7 meters. This project was collected with a Riegl LMS-Q680i Full Waveform LiDAR Sensor which collects an intensity value, GPS Week Time, Flightline and echo number attributes for each discrete pulse. Dewberry used proprietary procedures to classify the LAS into an initial ground surface. Dewberry used proprietary procedures to classify the LAS and then performed manual classifications according to project specifications: 1-Unclassified, 2-Ground, 7-Noise, 9-Water, and 10-Ignored Ground due to breakline proximity. Dewberry produced 3D breaklines and combined these with the final LiDAR data to produce seamless DTMs, DSMs and hydro flattened DEMs, for 833 tiles (1500 meters x 1500 meters) that cover the project area.This is a MD iMAP hosted service. Find more information at https://imap.maryland.gov.Image Service Link: https://mdgeodata.md.gov/lidar/rest/services/Wicomico/MD_wicomico_dem_ft/ImageServer

November 2025

Fire GP mutual aid districts for Wicomico County, Maryland. Developed based on the output of a response time analysis. Geographic locations of Fire Stations in Wicomico County, Summerset County, Dorchester County, Worcester County and Southern Delaware that have mutual aid agreements with Wicomico County and the City of Salisbury Fire Chiefs. These locations were used to aid the City of Salisbury and Wicomico County Emergency Services with developing a run order for 1st through 10th due to all 911 addresses in Wicomico County. The results of the analysis were delivered to Wicomico County Emergency Services to be ingested into the County Fire CAD system.