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Data Integrity - Maps and other data viewable on GoMaps or in other mapping applications on the City of Durham website were developed from public records and data sources including recorded deeds, plats, and other public records. Users of maps, images and tabular data produced for or created by these applications are hereby notified that the aforementioned public primary information sources should be consulted for verification of the information obtained from this website. While efforts have been made to use the most current and accurate data possible, Durham County, the City of Durham, NC and the mapping and software companies assume no legal responsibility for the information contained in the online mapping applications.

Metadata - In addition to new layers and tools available within the GoMaps application we are providing links to external Metadata for many of these layers. Metadata files are documents that describe the data itself including how and when the files were acquired or created and by whom. Metadata files provide information on update frequency, usage restrictions and contact information for City and County departments responsible for creating and maintaining the data.

Data Distribution - For information on acquiring copies of the data displayed on GoMaps for personal & professional use or for commercial use visit the Durham GIS webpages on the City of Durham website.

Feedback - We welcome any comments or suggestions. Send email feedback to Durham GIS or call one of the numbers listed below.

Contact Information -

Durham - Geographic Information Systems
101 City Hall Plaza (City Hall, Fourth Floor)
Durham, North Carolina 27701-3329 USA
Phone: 919.560.4122 Web Administrator ext 33246 / GIS Manger ext 33249
Fax: 919.560.4808
Email: gis@durhamnc.gov

Extended Contact List:   Contact

Supplemental Info. Tell Me About:   

Aerial Photography

Assessor Land Use Codes 

Assessor Parcels 

Condominiums

FEMA Flood Zones 

PIN Numbers 

Soil Types

Types of Topo Lines 

UDO - Unified Development Ordinance 

Water Supply Watersheds 

 

 

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 Flood Insurance Rate Maps

 GoMaps Customization 

 

 


Metadata Link Abstract
2010 Ortho TIF

2010 Ortho SID
The North Carolina 911 Board awarded a grant of $12.3 million to the City of Durham's Emergency Communications Center on September 25, 2009 for acquisition of statewide orthoimagery (aerial photography for base mapping purposes). The City of Durham recognized that the value of up-to-date, consistent orthoimagery would apply equally to its neighboring counties. The situation in North Carolina in 2009 was a patchwork of imagery (years captured and resolutions) and a slow pace of new imagery acquisition in difficult economic times. The Durham PSAP concluded that a statewide project would maximize benefits in a timely way. The products of the statewide project are orthoimagery in true color, 6-inch ground resolution in 5,000 by 5,000-foot tiles, in uncompressed and compressed formats, packaged by county for all 100 counties in North Carolina. The project was managed by the NC Center for Geographic Information and Analysis (CGIA) in the NC OneMap framework of data access. CGIA collaborated with the Geospatial & Technology Management Office to take advantage of the Qualifications-Based Selection contracts in place for orthoimagery acquisition, the NC Geodetic Survey to assure positional accuracy of the new products, and the Statewide Mapping Advisory Committee’s Working Group for Orthophotography Planning for technical advice. Images were collected with digital cameras in early 2010, image processing and quality control occurred through 2010, and products became available in early 2011. Data will be downloadable through NC OneMap.
2005 Ortho TIF

2005 Ortho SID
Orthophoto image data. Remotely sensed image data with displacement of features in the image resulting from terrain relief and sensor orientation mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map. Acquisition dates: March 18, March 20 and March 28, 2005. Photo Scale 1" = 600'producing natural color orthoimages at 6-inch Pixel Resolution. Positional accuracy meets the requirements for 1"=100' scale maps and as per NMAS (National Map Accuracy Standard) 90% of well identified features should be within 2.5 feet. Original TIF images are optionally compressed using MrSID compression software.
Durham Parcels Property Tax Map and Attributes for Durham County, North Carolina, USA. Official tax data and the official tax map represent status of each record as of January 1 of a given year and remains static until January 1 of the following year. Geographic Information System files and maps created in the interim represent the status of each record as of the date of the file and may differ from the official tax map.
FEMA Flood Risk 06 FloodRisk06 is a feature class representing the area within the flood mapping boundaries defined by the engineering models for the 100 year, 500 year and floodway. The FloodRisk06 spatial table contains information about the flood hazard within the study area. These zones are used by FEMA to designate the Special Flood Hazard Area (SFHA), identify areas of coastal high hazard flooding, and for insurance rating purposes. These data are the flood hazard areas that are or will be depicted on the FIRM.
FEMA MapBFE MapBFE is a file containing information about the Base Flood Elevations (BFE) within a study area. BFE lines indicate the approximate water surface elevation of the 1% annual chance flood hazard.
FEMA MapXSLN MapXsLn is a feature class containing information about Cross Section lines. These lines represent the locations of channel surveys performed for input into the hydraulic model used to calculate flood elevations. These locations are also shown on the flood profiles in the Flood Insurance Study report and can be used to cross reference the flood profiles to the planimetric depiction of the flood hazard.
Future Land Use Future Land Uses are established by the Durham Comprehensive Plan to guide the growth and development in Durham. The Future Land Use Map represents desired patterns of land use and the map and policies in the Plan offer a set of guidelines for expansion of private development and public services and facilities.
Overlay Airport The Airport Overlay applies to properties in the vicinity of Raleigh-Durham Airport. It is also the intent of this overlay to encourage land use patterns which are appropriate for the airport vicinity and public safety by avoiding concentrations of population. The Airport Overlay is divided into two suboverlays. Area A is found within the 65 Ldn and Area B is located outside the 65 Ldn but within the 60 Ldn of the Raleigh-Durham Airport.
Overlay_DDO This Downtown Design Overlay District is intended for properties adjacent to the Downtown Historic District of the City of Durham. The regulations of the overlay district either supplement, or replace, the regulations of the underlying zoning district, as described herein. The DDO is divided into the following three areas DDO-1, DDO-2, and DDO-3.
Overlay Downtown Developmenet Tier Development Tiers are established by the Durham Comprehensive Plan to guide the growth and development in distinctive parts of the Durham community. The Plan promotes new development and redevelopment that is appropriate to each tier by establishing policies and development regulations that recognize their unique character.
Overlay Local Historic District Historic districts are overlay zones established in the Unified Development Ordinance for the purposes of protecting historic resources. The overlay zones are applied by the governing bodies at the same time a historic preservation plan is adopted. Upon designation of an area as a historic district, any exterior building change requires review by the Durham Historic Preservation Commission and the issuance of a Certificate of Appropriateness (COA). The Commission uses the reveiw criteria in the adopted Plan and can approve a COA indicating that the proposed change is in keeping with the historic character of the area.
Overaly Major Transporation Corridor Rights-of-way carrying high volumes of traffic are image makers for Durham City and County. They act as entryways for visitors and residents and also serve as an indicator of the quality of life found in the area. Standards are provided to ensure that thoroughfares in this overlay develop with improved traffic efficiency and safety by reducing visual clutter and avoiding inappropriate site design. The MTC Overlay applies to all property within 1,250 feet of a designated major thoroughfare, and may extend up to 2,500 feet at intersections.
Overlay Transitional Office The Transitional Office Overlay (TO) is established to allow an orderly transition of land use from residential use to relatively small-scale office use of lots and parcels fronting major roadways, while maintaining a predominantly residential property appearance and building scale. See Section 4.6 of the Unified Development Ordinance (UDO).
Stormwater Drains Also referred to as Stromwater Nodes. The features in this layer represent closed system storm water structures such as catch basins, drop inlets, and end sections. It is intended to provide accurate location and attributes for all closed system inlet and outlet structures.
Stormwater Pipes This layer contains storm water closed system linear features such pipes and culverts. It is intended to provide location and attribute information for the closed system pipes that are part of the storm water system.
Stormwater Ponds Also referred to as Stormwater BMPs. Location of stormwater Best Management Practice (BMP) structures in the City of Durham. It is intended to roughly locate BMPs for efficiently scheduling annual inspections and for watershed planning projects. Location generally accurate only to parcel. Location within the parcel may not be accurate.
Stromwater Streams and Ditches Also referred to as Stormwater Channels. These are linear features that correspond to the open storm water system. Features represented include streams, ditches, and flow lines (i.e. indicators of flow across a body of water). It is intended to provide a record of the open system network which connects to elements of the closed system network.
Stormwater Watersheds Also referred to as Stormwater Basins. Boundaries of the watershed basins that correspond to the major streams within Durham County. It is intended to provides the delineation for major watersheds within the county.
 

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Aerial Photography:
Date- Flights for the 1999 digital orthophoto project were made in the last two weeks of March 1999. Processing and delivery of the digital files now in use on GoMaps were completed in November 2000.
Coverage- The 1999 orthophoto project coverage is county wide. Flight paths were designed to provide continuous photographic coverage of all of Durham County plus a 750' buffer. A total of 1467 digital orthophotographs make up the county wide coverage.
File Types- Digital orthophotos for the 1999 Durham GIS orthophoto project were delivered in TIFF World format. Images used in GoMaps are mosaics of 16 orthophotos compressed 50:1. GoMaps maps and images are transmitted as GIF files.
File Size- Each 1999 digital orthophoto in the original TIFF file format is roughly 25 megabytes in size. County wide coverage (1467 orthos) totals 37 gigabytes.
Resolution- The 1999 digital orthophoto images are made from black and white aerial photography at a photo scale of 1":660' with a ground resolution of one-half foot per pixel.
Map Coordinates- Each 1999 digital orthophoto is registered to the North Carolina State Plane Coordinate System (NCSPC) and covers a 2500 x 2500 foot area. Sixteen adjacent orthos, four on a side, make up a 10,000 x 10,000 foot NCSPC grid section. The location information for any point in the 1999 orthophoto project is based on the NAD83 horizontal and NAVD88 vertical datum.
Mapsheet Names- Mapsheets are named for the NCSPC grid they occupy. The naming convention for digital orthophotos in Durham GIS uses a 4 digit number to locate the 10,000 foot grid section, 0737 in south central Durham County for example. A two digit number from 05 to 20 is appended to specify one of 16 2,500 foot sheets inside the 10,000 foot grid area. By this method sheet 073705 would be in the upper left of the 0737 grid section while 073720 would be in the lower right of the same grid. The next grid section to the east, 0747 would be made up of sheets 074705 through 074720. One section to the north would be 0738 made up of sheets 073805 through 073820, and so on.
NEW- Durham GIS with funding from the City of Durham and Durham County acquired new photography in March 2005. Processing necessary to project the air photos in the correct coordinate system and to remove photographic and geometric distortion was completed the following year. The resulting image data set includes 1467 individual images covering the entire county, color this time, with a 6-inch pixel resolution from 1":600' scale photography. Each 2005 color image is three times the size of the 1999 black and white imagery. The same file layout covers the 1467 tiles with color images at approximately 75 megabytes per image or 110 gigabytes for the entire county. After processing and quality control the images are available to the public and uploaded to the internet applications.
FYI - The United States Geological Survey (USGS) and the North Carolina Center of Geographic Information and Analysis (NC CGIA) have imagery flown in 2002 which covers the lower two thirds of Durham County including most of the city. Search on the web for The National Map or for NC OneMap.

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Condominiums
Parcel Data - Parcel information on GoMaps is based on the Durham County Land Records database. All parcels are assigned a PIN number to identify the property.
Condos - Condominiums are a special type of commercial and residential building ownership. Owners of condominiums do not own the land on which the condo is built and are therefore not represented in the Durham County Land Records parcel database used on the Spatial Data Explorer.
Condo PIN No - Tax parcels that have condominiums on them are assigned a PIN number to identify the parcel, with an additional three digit Sub-Parcel number to identify the property as a so called Parent Parcel.
Parent Parcels - Parent Parcels represented in GoMaps may contain a number of condominiums but the property information for the individual condominiums is maintained in a separate County Tax Database. Parent parcels of condominiums have a PIN number 000-00-00-0000 and a Sub-Parcel extension .000.
Other Search - Also, in some cases the condominium name is the same as a subdivision name. Go to the Advanced Query screen (text link below the Parcel Query box) and search through the Subdivision names for your condominium. The list is sorted alphabetically for ease of use, but be aware that your condominium may or may not be listed as a separate subdivision.
County Data - Individual condominium ownership information can be found on the County website. Check the address of the Parent Parcel using techniques described above. Then, visit the County website http://www.durhamcountync.gov/index.html and take the text links to Public Record Databases and to Property Taxes. Go past the Start page to View Parcel Data. Enter the street name of the Parent Parcel of the condominium. Do not enter a house number. The query will return a list of all ownership records on that street. Scroll down and select a property by Name, Address or Legal Description. Be aware that many condominiums will have an address of 0. Parent Parcels will have a PIN number in the format, xxxx-xx-xx-xxxx.000 with the extension .000. Individual condominiums will have the identical PIN number with extension .001, .002, 003... and so on.
More Help - Note: Interactive mapping applicatons are maintained by the City of Durham GIS group, 919 560-4082 ext 246 or 249.
Durham County Land Records are maintained by the Durham County Tax Administrator 919 560-0300.

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PIN Numbers
NCSPC - The PIN is a combination of the easting and northing coordinates from the North Carolina State Plane Coordinate System (NCSPC). The PIN is based on the location of the centroid of the parcel, two digits to indicate the map scale and the tile location within a 10,000’ map grid.
Location - Given the following location:
E 2,029,898.65N 817,635.31
PIN Creation - The PIN is formed by combining alternating pairs of easting and northing coordinates
2 02 9 89 8.65
0 81 7 63 5.31
the leading 0 in the northing is implied, plus the tile locator (08) is added and becomes
208 20986 9
written as 0821-08-97-8693.

2The numbers representing the most significant digits of the easting and northing values for maps of this scale are not necessary and are dropped.
08 2The easting and northing numbers representing the 100K and 10K digits are paired to form the 10,000’ grid (10K) map number.
0The second set of numbers defines map scale and identifies a grid tile for a 200 scale map consisting of 4 tiles, 01 - 04 or a 100 scale map consisting of 16 tiles, 05 - 20. These numbers are not part of the easting and northing coordinates.
9The numbers representing the 1,000s digit of easting and northing are paired.
86 93 The numbers representing the 100s and 10s digits of easting and northing are paired.
The least significant digits are also unnecessary and are dropped.
Property - The property associated with PIN number 0821-08-97-8693 in the Durham County Parcel Database is City Hall at 101 City Hall Plaza in downtown Durham.

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Types of Topo Lines
INDV - Index Contour Line showing constant elevation at 10' interval.
Accuracy to within one-half the map contour interval, or + / - 1'.
INDVH - Index Contour Line indicating constant elevation at 10' interval but hidden or masked by other features.
Accuracy Unspecified.
INTV - Intermediate Contour Line showing constant elevation at 2' interval.
Accuracy to within one-half the map contour interval, or + / - 1'.
INTVH - Intermediate Contour Line indicating constant elevation at 2' interval but hidden or masked by other features.
Accuracy Unspecified.
INDV-DEPR - Index Depression Contour Line showing constant elevation at 10' interval and that closes on itself surrounding an area of lower elevation.
Accuracy to within one-half the map contour interval, or + / - 1'.
INDV-DEPRH - Index Depression Contour Line indicating constant elevation at 10' interval and that closes on itself surrounding an area of lower elevation but hidden or masked by other features.
Accuracy Unspecified.
INTV-DEPR - Intermediate Depression Contour Line showing constant elevation at 2' interval that closes on itself surrounding an area of lower elevation.
Accuracy to within one-half the map contour interval, or + / - 1'.
INTV-DEPRH - Intermediate Depression Contour Line indicating constant elevation at 2' interval that closes on itself surrounding an area of lower elevation but hidden or masked by other features.
Accuracy Unspecified.
INDV-OBS - Obscured Index Contour Line showing constant elevation at 10' interval but is obscured (made less accurate) by areas of dense vegetation or shadows.
Accuracy greater than one-half the map contour interval, or > 1'.
INDV-OBSH - Obscured Index Contour Line indicating constant elevation at 10' interval but is obscured (made less accurate) by areas of dense vegetation or shadows and also hidden by some other feature.
Accuracy Unspecified.
INTV-OBS - Obscured Intermediate Contour Line showing constant elevation at 2' interval but is obscured (made less accurate) by areas of dense vegetation or shadows.
Accuracy greater than one-half the map contour interval, or > 1'.
INTV-OBSH - Obscured Intermediate Contour Line showing constant elevation at 2' interval but is obscured (made less accurate) by areas of dense vegetation or shadows and also hidden by some other feature.
Accuracy Unspecified.

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FEMA Flood Codes

Zone Description
A Area subject to inundation from the 1% annual chance flood, no Base Flood Elevations determined.
AE Area subject to inundation from the 1% annual chance flood, Base Flood Elevations determined.
AEFW Delineated floodway.
AO Area subject to inundation from the 1% annual chance flood with flood depths of 1 to 3 feet.
1 PCT FUTURE CONDITIONS Area subject to inundation form the 1% annual chance flood based on future build out conditions.
Shaded X Area subject to inundation from the 0.2% annual chance flood.
X Area outside FEMA mapped 1% future and 0.2% annual chance floodplain.

Water Supply Watersheds


District Designation General Location
M/LR-A Lake Michie/Little River District A One (1) mile from the normal pool of Lake Michie and the Little River Reservoir, or to the ridge lines defining their drainage basins, whichever is less.
M/LR-B Lake Michie/Little River District B The portion of the drainage basins of Lake Michie and the Little River Reservoir not covered by M/LR-A
F/J-A Falls/Jordan District A One (1) mile from the normal pool of Falls Reservoir and Jordan Reservoir, or to the ridge lines defining their drainage basins, whichever is less.
F/J-B Falls/Jordan District B From the edge of F/J-A District to five (5) miles from the normal pool of the Falls Reservoir and Jordan Reservoir, or to the ridge line that defines their drainage basins, whichever is less.
E-A Eno River District A One (1) mile from and draining to the Eno River water intake.
E-B Eno River District B From the edge of E-A to ten (10) miles from the Eno River water intake, or to the ridge line that defines the drainage area of the intake, whichever is less.

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Soil Legend


The first capital letter is the initial one of the soil name. A second capital letter, A, B, C, D, E or F, shows the slope. Most symbols without a slope letter are those of nearly level soils, but some are for land types that have a considerable range of slope. A final number, 2, in a symbol shows that the soil is eroded.

Symbol Name % Slope
AlA Altavista silt loam 0-2
AlB Altavista silt loam 2-6
ApB Appling sandy loam 2-6
ApC Appling sandy loam 6-10
Cc Cartecay and Chewacla soils  
CfB Cecil fine sandy loam 2-6
CfC Cecil fine sandy loam 6-10
CfE Cecil fine sandy loam 10-25
Ch Chewacla and Wehadkee soils  
Cp Congaree silt loam  
CrB Creedmoor sandy loam 2-6
CrC Creedmoor sandy loam 6-10
DaB Davidson clay loam 2-6
DaC Davidson clay loam 6-10
GeB Georgeville silt loam 2-6
GeC Georgeville silt loam 6-10
GeD Georgeville silt loam 10-15
GlE Goldston slaty silt loam 10-25
GlF Goldston slaty silt loam 25-45
GrB Granville sandy loam 2-6
GrC Granville sandy loam 6-10
Gu Gullied land, clayey materials  
HeB Helena sandy loam 2-6
HeC Helena sandy loam 6-10
HrB Herndon silt loam 2-6
HrC Herndon silt loam 6-10
HsC Herndon stony silt loam 2-10
IrB Iredell loam 2-6
IrC Iredell loam 6-10
IuB Iredell-Urban land complex 0-6
IuC Iredell-Urban land complex 6-10
LgB Lignum silt loam 2-6
MfB Mayodan sandy loam 2-6
MfC Mayodan sandy loam 6-10
MfD Mayodan sandy loam 10-15
MfE Mayodan sandy loam 15-25
MrC Mayodan Urban land complex 0-10
MrD Mayodan Urban land complex 10-15
MuB Mecklenburg loam 2-6
MuC Mecklenburg loam 6-10
NaD Nason silt loam 10-15
NaE Nason silt loam 15-25
NoD Nason stony silt loam 10-15
PfC Pinkston fine sandy loam 2-10
PfE Pinkston fine sandy loam 10-25
Ro Roanoke silt loam  
TaE Tatum gravelly silt loam 15-25
Ur Urban land  
Wh Wahee loam alkaline subsoil variant  
WmD Wedowee sandy loam 10-15
WmE Wedowee sandy loam 15-25
Wn Wehadkee silt loam  
WsB White Store sandy loam 2-6
WsC White Store sandy loam 6-10
WsE White Store sandy loam 10-25
WvC2 White Store clay loam 2-10. Eroded
WvE2 White Store clay loam 10-25. Eroded
WwC White Store Urban land complex 0-10
WwE White Store Urban land complex 10-25
WxE Wilkes sandy loam 10-25


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