Delaware County Data Review

Delaware_Address_Pts

This is a map that shows the different address points (or building structures) within Delaware County, Ohio.

Delaware_Annexations

This data set shows the locations of different annexations and conforming boundaries in Delaware County.

Delaware Archeological

This shows the different archeological sites in Delaware County.

Delaware_Bench_Marks

This map shows all the bench marks in Delaware County.

A benchmark is a point whose position is known to a high degree of accuracy and is normally marked in some way. The marker is often a metal disk made for this purpose, but it can also be a church spire, a radio tower, a mark chiseled into stone, or a metal rod driven into the ground.

They are used by land surveyors, builders and engineers, map makers, and other professionals who need an accurate answer to the question, “Where?”

This website shows a gallery of benchmarks: http://www.geocaching.com/mark/gallery.aspx

Delaware_Building Outlines

This map layer marks the different points in Delaware County where buildings are located and makes an outline of it.

Delaware_Census_Block

This map layer marks the boundaries of Delaware County. The area is broken down into blocks so it is easier to conduct census. If the census of Delaware needs to be taken, then it will have to be within this block. Maybe it also shows areas where the population density is high?

Delaware_Census_BlockGroup

The map layer again shows areas broken down by the US Census bureau to help in conducting the decennial census.

Delaware_Census_Tract

This map layer shows the tracts or areas in Delaware County broken down by the US Census Bureau to help them conduct the decennial census. Each tract shows the road center lines and political boundaries of Delaware County.

Delaware_Farmlots

This map layer shows the location, sizes and boundaries of different farm lots in Delaware County.

Delaware_Floodplain_100 yr

This map layer shows the 100 year old flood plains in Delaware County. It is shown in blue and the tracts are shown in green.

Delaware_Floodplain_500yr

It shows all the 500 year old flood plains in Delaware County. They are far less and smaller than the 100 year old ones.

Delaware_Floodways

As can be assumed from the title, the map layer shows all the flood ways in Delaware County. They are shown in purple.

Delaware_Historical_Local

The map shows all locations within Delaware County that are of historical significance to its citizens.

Delaware_Historical_National

The map layer shows all locations within Delaware County that are of historical significance nationally.

Delaware_Hydro

The map layer shows all the major water ways in Delaware County.

Delaware_Hydro_Detail

This map layer shows an additional detail to the Delaware_Hydro map — it shows the Delaware Run.

Delaware_Landmarks

There are many map layers within this category. They show different landmarks within Delaware County.

• Bldg 1_Base: A point coverage containing Hospital/Urgent care, EMS, Fire departments, Township halls, Fairgrounds or track.
• Bldg 2_Base: A point coverage containing County Buildings, City Buildings, State Buildings, Weight Stations, Interstate Rest Areas, Libraries, Interstate Exit # 131 and Interstate Exit # 121.
• Cemetery_Base: A point coverage containing all Cemeteries within Delaware County.
• Churches: It contains all of the Churches in Delaware County, Ohio.
• Golfcourses_Base: A point coverage containing all Golf Courses within Delaware County.
• Parks: It contains a polygon shapefile and a point shapefile containing all parks within Delaware County.
• Schools_Base: A point coverage containing all Elementary Schools, Intermediate Schools, High Schools, JVS, Private Schools and Colleges within Delaware County.
• USPS_Base: A point coverage containing all Post Offices within Delaware County.

Delaware_Municipalities

This map layer contains the location and boundaries of all municipalities within Delaware County.

Delaware_Natural_Heritage_ODNR

The points indicate the different locations within Delaware County that are natural heritage.

Delaware_Orthophoto_2008 and Delaware_Orthophoto_Detailed_2008

An orthophoto  is an aerial photograph geometrically corrected such that the scale is uniform: the photo has the same lack of distortion as a map. Unlike an uncorrected aerial photograph, an orthophotograph can be used to measure true distances, because it is an accurate representation of the earth’s surface, having been adjusted for topographic relief, lens distortion, and camera tilt.

Look at this link for more details: http://online.wr.usgs.gov/ngpo/doq/doq_basics.html

The data layer shows orthophotographs of the periphery or boundaries of Delaware County.  All distortions due to terrain have been corrected and the area is seen in its true state as an almost straight line.

Delaware_Parcels

This map layer shows the different parcels within Delaware County. These parcels were created to facilitate and enhance the property appraisal process.

Delaware_Precincts

This map layer shows each precinct voting boundary in Delaware County.  The dots on the map show polls.

Delaware_Public Land Survey System

This data set helps to identify the two public land survey districts in Delaware County. It was first hard to determine how the data set was shown. Then it became clear that one PLSS was shown by drawing equal sized squares and the other PLSS was shown by drawing unequally sized rectangles. This data set also shows the size and boundaries of each PLSS.

Delaware_Railroad

This map layer shows all rail road lines running through Delaware County.

Delaware_Road_ Center_Line

It shows all the roads within Delaware County. It can be used extensively for geocoding, mapping and transportation analysis.

Delaware_Road_Right of Way

This map layer shows all road within Delaware County that are right of ways.

Delaware_School_Districts

It shows all school districts within Delaware County.

Delaware_Soils

It shows all the different soil types within Delaware County.

Delaware_Subdivision

The map layer shows the location of all subdivisions and condos in Delaware County.

Delaware_Tax District

The map layer shows all tax districts in Delaware County.

Delaware_Topography

This data set shows contour lines for Delaware County. The topography shapefiles are subdivided into separate township files. The townships are Berkshire, Berlin, Brown, Concord, Delaware, Genoa, Harlem, Kingston, Liberty North, Liberty South, Marlboro, Orange, Oxford, Porter, Radnor, Scioto, Thompson, Trenton and Troy. (Liberty Township has two shapefiles.)

Delaware_Townships

This shows the 19 different townships in Delaware County, their boundaries and sizes.

Delaware_Townships_Historical

This map layer shows the 18 original townships in Delaware County before the tax district changes affected their shapes.

Delaware_Watersheds_ODNR

The map layer shows the different water sheds in Delaware County.

Delaware_Wetlands

As the name indicates, the map layer describes the different wetlands found in Delaware County.

Delaware_Woodland_ODNR

This data set shows all the woodlands within Delaware County.

Delaware_Zip Codes

The data set shows the different regions within Delaware County according to their zip codes.

Delaware_Zoning

• Historic District: Maybe this data set shows Delaware City within Delaware County.
• Zoning: This data set zooms the area and shows details of Delaware City?