Land Use Data for Latitude 38.75 Longitude -77.25

Area size: .5 degrees latitude by .5 degrees longitude


Chesapeake & Ohio Canal National Hist. Park
George Washington Memorial Parkway
National Capital Parks - Central
Prince William Forest Park
Rock Creek Park
Thomas Stone National Historic Site

Agricultural Land Uses

Forestry - Pastoralism if moderate or higher
Rainfed agriculture (Subsistence/Commercial)
Cropped Agriculture with intensive livestock
Urban land


Temperate humid




Cereals and cereal products
Oil-bearing crops

Growing Period (days)

210 to 239
240 to 269

Soil Types



Plain or plateau

Slopes (degrees)

0.5 to 2
2 to 5
5 to 8

Population Density (persons per km2)

10 to 50
50 to 250
above 250

Infant mortality (per 1000 live births)

5 to 10

Mineral Extraction

Site Name (Type)Minerals
 Sand and Gravel, Construction
 Iron, Copper
 Copper, Silver
Agnewville ProspectSulfur-Pyrite, Arsenic, Gold
Agnewville ProspectGold, Sulfur
Brentsville ProspectCopper
Bull Run OccurrenceGold
Chantilly Crushed Stone Inc. (Surface)Stone, Crushed/Broken
Chantilly Crushed Stone, Inc. QuarryStone, Crushed/Broken
Chantilly ProspectCopper
Chantilly Prospect ACopper
Chantilly Prospect BCopper, Silver
Clay DepositClay
Clay Deposit Sw of PohickClay
Clay ProspectClay
Clay Prospect Se of DumfriesClay
Fairfax Quarry (Surface)Stone, Crushed/Broken
Fairfax Quarry Prospect (Surface)Copper
Franconia Gravel Co. PitsSand and Gravel, Construction
Franconia Gravel No. 1 (Surface)Sand and Gravel, Construction
Graham Virginia Quarry (Surface)Stone, Crushed/Broken
Graham-Virginia Granite QuarryGranite
Greenbriar ProspectIron, Copper
Greenwood ProspectGold
Hilltop Sand and Gravel Co. PitsSand and Gravel, Construction
Hilltop Sand and Gravel Pit (Surface)Sand and Gravel, Construction
Hise ProspectAsbestos, Stone, Crushed/Broken
Jenkins Farm ProspectCopper
Joplin ProspectSulfur-Pyrite
Joplin ProspectSulfur
Leebrick Bros. Inc. Sand and Gravel PitSand and Gravel, Construction
Loudoun Quarries, IncStone, Crushed/Broken
Loudoun Quarry,Div of Chant (Surface)Stone, Crushed/Broken
Manassas OccurrenceBarium-Barite
Manassas QuarryStone, Crushed/Broken
No. 2 (Surface)Granite
Potomac Sand & Gravel Co. ProspectSand and Gravel, Construction
Potomac Sand and Gravel Co. Dredge DepositSand and Gravel, Construction
Rock Run Gold PlacersGold
Schist ProspectMica
Shale ProspectClay
Shale Prospect Ne of ChantillyStone, Crushed/Broken
Shale Prospect Se of FlorisStone, Crushed/Broken
Shale Prospect South of Bull RunStone, Crushed/Broken
Shale Prospect Sw of SterlingStone, Crushed/Broken
South Manassas ProspectBarium-Barite
Spencer Farm ProspectCopper
Stoneyhurst Quarry Number 1Stone, Dimension
Stoneyhurst Quarry Number 3Stone, Dimension
Toms Run QuarrySilica
Virginia Concrete Co.Plant 4Sand and Gravel, Construction

Agricultural use data provided by LADA, 2008. "Mapping Land Use Systems at global and regional scales for Land Degradation Assessment Analysis. Version 1.0" Nachtergaele F. & Petri M.
Mineral extraction data provided by USGS Mineral Resources Data System (MRDS), downloaded June 2, 2010.