Virginia

Maryland

Delaware

District of Columbia

Potomac River Patuxent River

Rappahannock River

Susquehanna

7 4

C H E S A P E A K E B AY L A N D S AT E N H A N C E M E N T A N D C O M PA R I S O NC H E S A P E A K E B AY L A N D S AT E N H A N C E M E N T A N D C O M PA R I S O N

Watershed

Rivers

HighwaysStates

DC

Maryland

Virginia

Delaware

New Jersey

Date: 3/4/2015Author: Kevin McMahonCoordinate System: WGS 1984 UTM zone 18NProjection: Transverse MercatorDatum: WGS 1984false easting: 500,000.0000false northing: 0.0000central meridian: -75.0000scale factor: 0.9996latitude of origin: 0.0000Units: Meter

Disclaimer: This map is for educational purposes only.

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0 10 20 30 40 505Miles This is a Band 4 ir image with the National Mall being the focus.

The 30m resolution makes it impossible to distinguish individualbuildings or detail, only differences between land mass, urban,

water and vegetation can be made.

This is a Band 2 image that was compared to bands 1-7to deliniate water and the visibility of bridges. Both bands2 and 3 highlight the bridges best, while bands 4 and 5deliniate water best. Band 2 and 3 in regards to water doshow what appears to be depth, while bands 4-5 do not.

This is a Band 5 image that was compared to bands 1-7to show the differences in vegetation. While all bands dovarying degrees of vegetation band 5 adds what can beinterpreted as trees whereas the other images just appearto highlight individual land boundaries, farms, plots, etc.

This is a Band 4 image that has had individual values(7-18) selected in its attribute table and highlighted.The screen capture below depicts the selected bandsand the resulting highlighted area within the image.

This is a Band 4 image that was used with the pixelinspector tool ro show on the fly variances betweenpixel values, mainly moving from land areas to water.Pixel values increase from water (typically 7-20 DN)to the hundreds (100-152 DN). In this Band 4 imagethough most of the water areas have a value of 72.

This set of images were compared amongst oneanother to show the range clustering of valuesfrom inage to another. Each band was denotedin a seperate color as seen in the grapg below.

This is a Band 4 image with the histogramdisplayed showing the value ranges fromits original form to a stretched form. DN 0peaks in the Band 4 image (background).