elevationabovesea level (ft)

0 - 56 - 10

11 - 1516 - 20

21 - 2526 - 30

31 - 35

36 - 4041 - 45

46 - 5051 - 60

61 - 7071 - 80

81 - 9091 - 100101 - 150151 - 200201 - 250

251 - 300301 - 350351 - 400

401 - 450countyboundary

Miles

100

Kilometers

100

Scale 1:400,000

Pennsylvania

Maryland

Maryland

Delaware Bay

Atlantic Ocean

New Jersey

Digital Elevation Model of Delaware created from LiDAR data collected in Winter 2013/Spring 2014.Lidar Task Order Number: G13PD00884 USGS Contract: G10PC00025

The Delaware Geological Survey led a multi-agency, state and federal effort(including DelDOT, DNREC, USGS, and NOAA) to secure funds from theHurricane Sandy Relief appropriation to collect new, high-quality LiDARfor the entire state of Delaware. LiDAR, which stands for Light Detection and Ranging, is a remote sensing method that uses light in the form of a pulsed laser to measure distances from a source to a target object. Typically, a LiDAR device is attached to the bottom of a plane and is pointed at the ground. The time it takes the pulse to return represents the distance it traveled and can be used to generate precise, three-dimensional information about the landscape below and its surface characteristics.

Shown here is an elevation dataset derived from the LiDAR data that will help to enhance watershed modeling for predicting stream flooding, produce up-to-date topographic maps, predict and assess the impacts of storm surge and sea-level rise, improve our geologic and land-use mapping, measure changes in marshes and wetlands, and much more.

Delaware Geological SurveyUniversity of DelawareDavid R. Wunsch, State Geologist

Special Publication No. 28By Lillian T. Wang

2017

Digital Elevation Model of Delaware