Map Layer Title Description Metadata Link BIODIVERSITY CONSERVATION CLEAN AIR CLEAN AND PLENTIFUL WATER CLIMATE STABILIZATION "FOOD, FUEL, AND MATERIALS" NATURAL HAZARD MITIGATION "RECREATION, CULTURE, AND AESTHETICS" Acres of crops that have no nearby pollinator habitat "This map layer depicts the total acres of agricultural crops within a subwatershed (12-digit HUC) that require or would benefit from the presence of pollinators, but are without any nearby supporting habitat." Metadata X Agricultural water use (million gallons/day) "This map estimates the millions of gallons of water used daily for agricultural irrigation for each subwatershed (HUC-12) in the contiguous United States. Estimates include self-supplied surface and groundwater, as well as water supplied by irrigation water providers, which may include governments, companies, or other organizations." Metadata X Area of solar energy (km2) This map estimates the square kilometers of area within each subwatershed (12-digit HUC) that offers the potential for harvesting solar energy. This map does not take into account land use or ownership. Metadata X Average annual daily potential (kWh/m2/day) This map estimates the average daily potential kilowatt hours of solar energy that could be harvested per square meter within each subwatershed (12-digit HUC). This calculation is based on environmental factors and does not take into account land ownership or viability of installing solar harvesting systems. Metadata X Average annual precipitation (inches/yr) This map estimates the average number of inches of precipitation that fall within a subwatershed (12-digit HUC) each year. Precipitation includes snow and rain accumulation. Metadata X X X X X Carbon storage by tree biomass (kg/m2) This map estimates the kilograms of dry carbon stored per square meter of above ground biomass of trees and forests in each subwatershed (12-digit HUC). Metadata X Carbon storage by tree root biomass (kg/m2) This map estimates the kilograms of dry carbon stored per square meter in below ground biomass in each subwatershed (12-digit HUC). Biomass below ground includes tree root biomass and soils. Metadata X Cotton yields (thousand tons/yr) This map depicts the thousands of tons of cotton that are grown annually within each subwatershed (12-digit HUC). Metadata X Cultivated biological nitrogen fixation (kg N/ha/yr) This map depicts the mean rate of biological nitrogen fixation from the cultivation of crops within each subwatershed (12-digit HUC) in kg N/ha/yr. Metadata X X Domestic water use (million gallons/day) "This map estimates the millions of gallons of water used daily for domestic purposes in each subwatershed (HUC-12). For the purposes of this map, domestic or residential water use includes all indoor and outdoor uses, such as for drinking, bathing, cleaning, landscaping, and pools for primary residences." Metadata X Fruit yields (thousand tons/yr) This map depicts the thousands of tons of fruit crops that are grown annually within each subwatershed (12-digit HUC). Metadata X Grain yields (thousand tons/yr) This map depicts the thousands of tons of major grain crops that are grown annually within each subwatershed (12-digit HUC). Metadata X Hectares of cotton crops This map depicts the total hectares managed for cotton crops annually within each subwatershed (12-digit HUC). Metadata X Hectares of fruit crops This map depicts the total hectares managed for fruit crops annually within each subwatershed (12-digit HUC). Metadata X Hectares of grain crops This map depicts the total hectares managed for major grain crops annually within each subwatershed (12-digit HUC). Metadata X Hectares of vegetable crops This map depicts the total hectares managed for vegetable crops annually within each subwatershed (12-digit HUC). Metadata X Industrial water use (million gallons/day) "This map estimates the millions of gallons of water used daily for industrial processes in each subwatershed (HUC-12). Estimates include self-supplied surface and groundwater, as well as water supplied by water providers, which may include governments, companies, or other organizations." Metadata X Manure application (kg N/ha/yr) This map depicts the mean rate of manure application to agricultural lands from confined animal feeding operations within each subwatershed (12-digit HUC) in kg N/ha/yr. Metadata X X X Maximum amphibian species richness - southeast "This map models the maximum number of amphibian species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X Maximum amphibian species richness - southwest "This map models the maximum number of amphibian species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X Maximum bat species richness - southeast "This map models the maximum number of bat species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum bat species richness - southwest "This map models the maximum number of bat species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum big game species richness - southeast "This map models the maximum number of big game species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum big game species richness - southwest "This map models the maximum number of big game species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum bird species richness - southeast "This map models the maximum number of bird species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum bird species richness - southwest "This map models the maximum number of bird species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum fur bearer species richness - southeast "This map models the maximum number of fur bearer species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum fur bearer species richness - southwest "This map models the maximum number of fur bearer species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum land cover diversity - southeast This map models the diversity of land cover types within a subwatershed (12-digit HUC) in the southeast. The maximum value is the greatest number of land cover types found within 1 kilometer of any given point in the subwatershed. Metadata X X Maximum land cover diversity - southwest This map models the diversity of land cover types within a subwatershed (12-digit HUC) in the southwest. The maximum value is the greatest number of land cover types found within 1 kilometer of any given point in the subwatershed. Metadata X X Maximum mammal species richness - southeast "This map models the maximum number of mammal species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X Maximum mammal species richness - southwest "This map models the maximum number of mammal species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X Maximum modeled threatened and endangered vertebrate species - southeast "This map models the maximum number of threatened and endangered species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum modeled threatened and endangered vertebrate species - southwest "This map models the maximum number of threatened and endangered species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum reptile species richness - southeast "This map models the maximum number of reptile species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X Maximum reptile species richness - southwest "This map models the maximum number of reptile species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X Maximum small game species richness - southeast "This map models the maximum number of small game species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum small game species richness - southwest "This map models the maximum number of small game species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum total harvestable species richness - southeast "This map models the maximum number of harvestable species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum total harvestable species richness - southwest "This map models the maximum number of harvestable species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum total vertebrate species richness - southeast "This map models the maximum number of vertebrate species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum total vertebrate species richness - southwest "This map models the maximum number of vertebrate species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum waterfowl species richness - southeast "This map models the maximum number of waterfowl species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Maximum waterfowl species richness - southwest "This map models the maximum number of waterfowl species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The maximum number does not represent the potential richness for the entire watershed." Metadata X X Mean amphibian species richness - southeast "This map models the average number of amphibian species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations." Metadata X Mean amphibian species richness - southwest "This map models the average number of amphibian species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations." Metadata X Mean bat species richness - southeast "This map models the average number of bat species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations." Metadata X X Mean bat species richness - southwest "This map models the average number of bat species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations." Metadata X X Mean big game species richness - southeast "This map models the average number of big game species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations." Metadata X X Mean big game species richness - southwest "This map models the average number of big game species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations." Metadata X X Mean bird species richness - southeast "This map models the average number of bird species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations." Metadata X X Mean bird species richness - southwest "This map models the average number of bird species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations." Metadata X X Mean fur bearer species richness - southeast "This map models the average number of fur bearer species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations." Metadata X X Mean fur bearer species richness - southwest "This map models the average number of fur bearer species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations." Metadata X X Mean land cover diversity - southeast This map models the diversity of land cover types within a subwatershed (12-digit HUC) in the southeast. The mean value is the average number of land cover types found within 1 kilometer of any given point in the subwatershed. Metadata X X Mean land cover diversity - southwest This map models the diversity of land cover types within a subwatershed (12-digit HUC) in the southwest. The mean value is the average number of land cover types found within 1 kilometer of any given point in the subwatershed. Metadata X X Mean mammal species richness - southeast "This map models the average number of mammal species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations." Metadata X Mean mammal species richness - southwest "This map models the average number of mammal species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations." Metadata X Mean modeled threatened and endangered vertebrate species - southeast "This map models the average number of threatened and endangered species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations." Metadata X X Mean modeled threatened and endangered vertebrate species - southwest "This map models the average number of threatened and endangered species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations." Metadata X X Mean reptile species richness - southeast "This map models the average number of reptile species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations." Metadata X Mean reptile species richness - southwest "This map models the average number of reptile species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations." Metadata X Mean small game species richness - southeast "This map models the average number of small species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations." Metadata X X Mean small game species richness - southwest "This map models the average number of small species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations." Metadata X X Mean total harvestable species richness - southeast "This map models the average number of harvestable species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations." Metadata X X Mean total harvestable species richness - southwest "This map models the average number of harvestable species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations." Metadata X X Mean total vertebrate species richness - southeast "This map models the average number of vertebrate species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations." Metadata X X Mean total vertebrate species richness - southwest "This map models the average number of vertebrate species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations." Metadata X X Mean waterfowl species richness - southeast "This map models the average number of waterfowl species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations." Metadata X X Mean waterfowl species richness - southwest "This map models the average number of waterfowl species that are likely to be present in any single location within a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations." Metadata X X Natural biological nitrogen fixation (kg N/ha/yr) This map depicts mean biological nitrogen fixation in natural and semi-natural ecosystems within each subwatershed (12-digit HUC) in kg N/ha/yr. Metadata X X NIB amphibian species richness - southeast "This map depicts an index value of amphibian species richness for a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X NIB amphibian species richness - southwest "This map depicts an index value of amphibian species richness for a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X NIB bat species richness - southeast "This map depicts an index value of bat species richness for a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB bat species richness - southwest "This map depicts an index value of bat species richness for a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB big game species richness - southeast "This map depicts an index value of big game species richness for a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB big game species richness - southwest "This map depicts an index value of big game species richness for a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB bird species richness - southeast "This map depicts an index value of bird species richness for a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB bird species richness - southwest "This map depicts an index value of bird species richness for a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB fur bearer species richness - southeast "This map depicts an index value of fur bearer species richness for a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB fur bearer species richness - southwest "This map depicts an index value of fur bearer species richness for a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB land cover diversity - southeast This map models the diversity of land cover types within a subwatershed (12-digit HUC) in the southeast. The index value is based on average values determined for each HUC. Metadata X X NIB land cover diversity - southwest This map models the diversity of land cover types within a subwatershed (12-digit HUC) in the southwest. The index value is based on average values determined for each HUC. Metadata X X NIB mammal species richness - southeast "This map depicts an index value of mammal species richness for a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X NIB mammal species richness - southwest "This map depicts an index value of mammal species richness for a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X NIB modeled threatened and endangered vertebrate species - southeast "This map depicts an index value of threatened and endangered species richness for a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB modeled threatened and endangered vertebrate species - southwest "This map depicts an index value of threatened and endangered species richness for a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB reptile species richness - southeast "This map depicts an index value of reptile species richness for a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X NIB reptile species richness - southwest "This map depicts an index value of reptile species richness for a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X NIB small game species richness - southeast "This map depicts an index value of small game species richness for a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB small game species richness - southwest "This map depicts an index value of small game species richness for a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB total harvestable species richness - southeast "This map depicts an index value of harvestable species richness for a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB total harvestable species richness - southwest "This map depicts an index value of harvestable species richness for a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB total vertebrate species richness - southeast "This map depicts an index value of vertebrate species richness for a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB total vertebrate species richness - southwest "This map depicts an index value of vertebrate species richness for a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB waterfowl species richness - southeast "This map depicts an index value of waterfowl species richness for a subwatershed (12-digit HUC) in the southeast. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X NIB waterfowl species richness - southwest "This map depicts an index value of waterfowl species richness for a subwatershed (12-digit HUC) in the southwest. This map is based on habitat models, not wildlife observations. The index value is based on average values determined for each HUC." Metadata X X Number of aquatic animal species "This map illustrates the total number of animal species associated with aquatic habitat that are listed as G1, G2, or in the federal endangered species program that may reside within each subwatershed (12-digit HUC). G1 and G2 denote Global Conservation Ranks classified by NatureServe." Metadata X X X Number of aquatic plant species "This map illustrates the total number of plant species associated with aquatic habitat that are listed as G1, G2, or in the federal endangered species program that may reside within each subwatershed (12-digit HUC). G1 and G2 denote Global Conservation Ranks classified by NatureServe." Metadata X X X Number of dams "This map depicts the number of dams within each subwatershed (12-digit HUC). For this map, EnviroAtlas uses the National Inventory of Dams maintained by the US Army Corps of Engineers." Metadata X X X X Number of fruit crop types (annually) This map depicts the number of fruit crop types that are grown annually within each subwatershed (12-digit HUC). Metadata X Number of grain crop types (annually) This map depicts the number of major grain crop types that are grown annually within each subwatershed (12-digit HUC). Metadata X Number of terrestrial animal species "This map illustrates the total number of animal species associated with terrestrial habitat that are listed as G1, G2, or in the federal endangered species program that may reside within each subwatershed (12-digit HUC). G1 and G2 denote Global Conservation Ranks classified by NatureServe. Terrestrial habitat refers to land areas such as forests, grasslands, deserts and rainforests." Metadata X X Number of terrestrial plant species "This map illustrates the total number of plant species associated with terrestrial habitat that are listed as G1, G2, or in the federal endangered species program that may reside within each subwatershed (12-digit HUC). G1 and G2 denote Global Conservation Ranks classified by NatureServe. Terrestrial habitat refers to land areas such as forests, grasslands, deserts and rainforests." Metadata X X Number of vegetable crop types (annually) This map depicts the number of vegetable crop types that are grown annually within each subwatershed (12-digit HUC). Metadata X Number of wetland animal species "This map illustrates the total number of animal species associated with wetland habitat that are listed as G1, G2, or in the federal endangered species program that may reside within each subwatershed (12-digit HUC). G1 and G2 denote Global Conservation Ranks classified by NatureServe." Metadata X X X Number of wetland plant species "This map illustrates the total number of plant species associated with wetland habitat that are listed as G1, G2, or in the federal endangered species program that may reside within each subwatershed (12-digit HUC). G1 and G2 denote Global Conservation Ranks classified by NatureServe." Metadata X X X Oxidized nitrogen dry deposition (kg/ha) This map estimates the annual dry deposition of oxidized nitrogen within each subwatershed (12-digit HUC) in kilograms per hectare. Dry deposition occurs when particles or gases attach to surfaces such as dust or smoke and fall to the earth's surface. Metadata X X X Oxidized nitrogen wet deposition (kg/ha) "This map estimates the annual wet deposition of oxidized nitrogen within each subwatershed (12-digit HUC) in kilograms per hectare. Wet deposition occurs when rain, snow, or fog carry nitrogen to the earth’s surface." Metadata X X X Percent agriculture on hydric soil "This map depicts the percentage of land managed for agriculture that has hydric soils within each subwatershed (12-digit HUC). This includes all land dedicated to the production of crops, but excludes land managed for pasture." Metadata X X X Percent agriculture on wet areas (wetness index > 550) This map estimates the percent of land within a subwatershed (12-digit HUC) that is frequently or periodically wet and is managed for agriculture. This map uses a wetness index of 550 to determine if the area is considered to be wet. Metadata X X X Percent cropland "This map depicts the percent of land managed as cropland in each subwatershed (12-digit HUC). For this map, EnviroAtlas uses all crop types in the Cropland Data Layer created by the United States Department of Agriculture." Metadata X X X X X X Percent developed land on wet areas (wetness index > 550) "This map estimates the percent of land within a subwatershed (12-digit HUC) that is frequently or periodically wet and has been developed or urbanized. This map uses a wetness index of 550 to determine if the area is considered to be wet. This map includes various types of development such as open spaces, parks, golf courses, single family homes, multifamily housing units, retail, commercial, industrial sites, and associated infrastructure." Metadata X X Percent emergent herbaceous wetlands "This map depicts the percent of land comprised of emergent herbaceous wetlands in each subwatershed (12-digit HUC). For this map, EnviroAtlas uses the National Land Cover Database and its definition of emergent herbaceous wetlands." Metadata X X X X X X Percent forest This map illustrates the percentage of total land within each subwatershed (12-digit HUC) that is covered by trees and forest. Metadata X X X X X X X Percent forest and woody wetlands This map illustrates the percentage of total land within each subwatershed (12-digit HUC) that is covered by trees and forest or woody wetlands. EnviroAtlas uses the National Land Cover Database definition of woody wetlands. Metadata X X X X X X Percent forest and woody wetlands in buffer "This map layer portrays the percent of land within 30 meters of streams, rivers, and other hydrologically connected waterbodies within each subwatershed (12-digit HUC) that is covered by trees and forests or woody wetlands. EnviroAtlas uses the 2006 National Land Cover Database definition of woody wetlands." Metadata X X X X Percent forest land in buffer "This map layer portrays the percent of land within 30 meters of streams, rivers, and other hydrologically connected waterbodies within each subwatershed (12-digit HUC) that is covered by trees and forests." Metadata X X X X Percent forest on wet areas (wetness index > 550) This map estimates the percent of land within a subwatershed (12-digit HUC) that is frequently or periodically wet and is covered by trees and forests. This map uses a wetness index of 550 to determine if the area is considered to be wet. Metadata X X Percent GAP status 1 and 2 "This map illustrates the percent of land within a subwatershed (12-digit HUC) that is designated as Status 1 or 2 under the USGS Gap Analysis Program. These lands have permanent protections in place limiting visitation, use, and human impacts. Lands with status 1 have more restrictions in place to minimize disturbance and maintain the land's natural state." Metadata X X "Percent GAP status 1, 2, and 3" This map illustrates the percent of land within subwatershed (12-digit HUC) that has legally recognized easements for conservation or other protections in place to restrict human use or development. This layer includes both public and private land. Metadata X X Percent GAP status 3 "This map illustrates the percent of land within a subwatershed (12-digit HUC) that is designated as Status 3 under the USGS Gap Analysis Program. These areas have permanent protection from conversion of natural land cover for the majority of area. Subject to extractive uses of either broad, low-intensity type (e.g.. Logging) or localized intense type (e.g.. Mining). Confers protection to federally listed endangered and threatened species throughout the area." Metadata X X Percent impervious area "This map illustrates the percent of total land within each subwatershed (12-digit HUC) that is impervious. Impervious surfaces do not allow the penetration of water and include buildings, roads, and sidewalks." Metadata X X X X X X X Percent IUCN status IA "This map portrays the percentage of land within each subwatershed (12-digit HUC) that has been classified as Status IA by International Union for Conservation of Nature (IUCN). Category IA protected areas seek to protect biodiversity and natural features; human visitation, use, and impacts are strictly controlled." Metadata X X Percent IUCN status IB "This map portrays the percentage of land within each subwatershed (12-digit HUC) that has been classified as Status IB by International Union for Conservation of Nature (IUCN). Category IB protected areas include large unmodified or slightly modified areas, without permanent or significant human habitation. These lands are protected and managed so as to protect their natural condition." Metadata X X Percent IUCN status II "This map portrays the percentage of land within each subwatershed (12-digit HUC) that has been classified as Status II by International Union for Conservation of Nature (IUCN). Category II protected areas re large natural or near natural areas set aside to protect large-scale ecological processes, along with the complement of species and ecosystems characteristic of the area, which also provide a foundation for environmentally and culturally compatible, spiritual, scientific, educational, recreational, and visitor opportunities." Metadata X X Percent IUCN status III "This map portrays the percentage of land within each subwatershed (12-digit HUC) that has been classified as Status III by International Union for Conservation of Nature (IUCN). Category III protected areas are set aside to protect a specific natural monument, which can be a landform, sea mount, submarine cavern, geological feature such as a cave or even a living feature such as an ancient grove. They are generally quite small protected areas and often have high visitor value." Metadata X X Percent IUCN status IV "This map portrays the percentage of land within each subwatershed (12-digit HUC) that has been classified as Status IV by International Union for Conservation of Nature (IUCN). Category IV areas aim to protect particular species or habitats and management reflects this priority. Many Category IV protected areas will need regular, active interventions to address the requirements of particular species or to maintain habitats, but this is not a requirement of the category." Metadata X X Percent IUCN status V "This map portrays the percentage of land within each subwatershed (12-digit HUC) that has been classified as Status V by International Union for Conservation of Nature (IUCN). Category V protected areas have distinct character with significant, ecological, biological, cultural and scenic value: and where safeguarding the integrity of this interaction is vital to protecting and sustaining the area and its associated nature conservation and other values." Metadata X X Percent IUCN status VI "This map portrays the percentage of land within each subwatershed (12-digit HUC) that has been classified as Status VI by International Union for Conservation of Nature (IUCN). Category VI protected areas are generally large, with most of the area in a natural condition, where a proportion is under sustainable natural resource management and where low-level non-industrial use of natural resources compatible with nature conservation is seen as one of the main aims of the area." Metadata X X Percent land with any IUCN status This map portrays the percentage of land within each subwatershed (12-digit HUC) that is protected. It includes all lands that have been classified by International Union for Conservation of Nature (IUCN) as protected areas. Metadata X X Percent large natural areas "This map illustrates the percent of land within each subwatershed that are covered by large natural areas. Large natural areas are greater than 25,000 acres and covered by forests, shrubs, grasslands, barren land, or wetlands. It excludes areas that are covered by agriculture and developed land." Metadata X X Percent medium natural areas "This map illustrates the percent of land within each subwatershed that are covered by medium sized natural areas. Medium natural areas are less 25,000 acres but greater than 500 acres and are covered by forests, shrubs, grasslands, barren land, or wetlands. It excludes areas that are covered by agriculture and developed land." Metadata X X Percent natural land cover "This map illustrates the percent of total land within each subwatershed (12-digit HUC) that has natural land cover. Natural land cover includes forests, shrubs, grasslands, barren land, and wetlands; it excludes agriculture and impervious surfaces." Metadata X X X X X X Percent natural land cover in buffer "This map layer portrays the percent of naturally covered land within 30 meters of streams, rivers, and other hydrologically connected waterbodies within each subwatershed (12-digit HUC). Natural land cover includes forests, shrubs, grasslands, barren land, and wetlands; it excludes agriculture and developed land." Metadata X X X X Percent pasture This map depicts the percent of land managed as pasture in each subwatershed (12-digit HUC). Pasture areas are planted for livestock grazing or the production of seed or hay crops. Metadata X X X X X X Percent potentially restorable wetlands This map estimates the percent of land within each subwatershed (12-digit HUC) that may be suitable for wetland restoration. Metadata X X X X Percent range on wet areas (wetness index > 550) This map estimates the percent of land within a subwatershed (12-digit HUC) that is frequently or periodically wet and is covered by range land. This map uses a wetness index of 550 to determine if the area is considered to be wet. EnviroAtlas defines range as land dominated by shrubs or herbaceous vegetation. Metadata X X X Percent rare ecosystem "This map estimates the percent of land within each subwatershed (12-digit HUC) that could be classified as rare ecosystem. Ecosystem rarity in EnviroAtlas is based on size, shape, and type of ecosystem." Metadata X X Percent rare ecosystem protected "This map estimates the percent of land within each subwatershed (12-digit HUC) that is protected and could be classified as rare ecosystem. Ecosystem rarity in EnviroAtlas is based on size, shape, and type of ecosystem." Metadata X X Percent small natural areas "This map illustrates the percent of land within each subwatershed that are covered by small patches of natural areas. Small natural areas are less 500 acres and covered by forests, shrubs, grasslands, barren land, or wetlands. It excludes areas that are covered by agriculture and developed land." Metadata X X Percent urban area "This map estimates the amount of developed land within each subwatershed (12-digit HUC). For the purposes of this map, urban land cover includes a variety of development, such as open spaces, parks, golf courses, single family homes, multifamily housing units, retail, commercial, industrial sites, and associated infrastructure. Urban land cover is not confined to city limits." Metadata X X X X X X X Percent wetlands "This map depicts the percent of land comprised of woody and emergent herbaceous wetlands in each subwatershed (12-digit HUC). For this map, EnviroAtlas uses the National Land Cover Database and its definitions of woody and emergent herbaceous wetlands." Metadata X X X X X X X Percent wetlands on wet areas (wetness index > 550) This map estimates the percent of land within a subwatershed (12-digit HUC) that is frequently or periodically wet and is covered by wetlands. This map uses a wetness index of 550 to determine if the area is considered to be wet. EnviroAtlas uses the National Land Cover Database classification of wetlands. Metadata X X Population near roadway with little to no tree buffer "This map estimates the total population that lives within 90 meters of a major road with little to no tree buffer. For the purposes of this map, little to no tree buffer means that no area within the 90 meters was classified in the National Land Cover Database as forest." Metadata X Reduced nitrogen dry deposition (kg/ha) This map estimates the annual dry deposition of reduced nitrogen within each subwatershed (12-digit HUC) in kilograms per hectare. Dry deposition occurs when particles or gases attach to surfaces such as dust or smoke and fall to the earth's surface. Metadata X X X Reduced nitrogen wet deposition (kg/ha) "This map estimates the annual wet deposition of reduced nitrogen within each subwatershed (12-digit HUC) in kilograms per hectare. Wet deposition occurs when rain, snow, or fog carry nitrogen to the earth’s surface." Metadata X X X Stream density (km/km2) This map estimates the drainage density within each subwatershed (12-digit HUC). The density is equal to the total stream length in kilometers within a subwatershed divided by its total area in square kilometers. Metadata X X X Stream length (km) "This map estimates the total kilometers of streams, rivers, or other linear waterways within each subwatershed (12-digit HUC). It includes both natural and man-made water features, but excludes non-linear waterbodies such as lakes." Metadata X X X Stream length impaired by metals (km) This map depicts the total stream length in kilometers within the subwatershed (12-digit HUC) that has been listed as impaired due to the presence of metals in the water. Metadata X Stream length impaired by nutrients (km) This map depicts the total stream length in kilometers within the subwatershed (12-digit HUC) that has been listed as impaired due to the presence of nutrients in the water. Metadata X Stream length impaired for biota (km) This map depicts the total stream length in kilometers within the subwatershed (12-digit HUC) that has been listed as impaired for biota. Biota or biological impairment is an indication of water quality and not necessarily the source of impairment. Metadata X Stream length impaired for temperature (km) This map depicts the total stream length in kilometers within the subwatershed (12-digit HUC) that has been listed as impaired for having higher than average temperature. Metadata X Sulfur dry deposition (kg/ha) This map estimates the annual dry deposition of sulfur within each subwatershed (12-digit HUC) in kilograms per hectare. Dry deposition occurs when particles or gases attach to surfaces such as dust or smoke and fall to the earth's surface. Metadata X X X Sulfur wet deposition (kg/ha) "This map estimates the annual wet deposition of sulfur within each subwatershed (12-digit HUC) in kilograms per hectare. Wet deposition occurs when rain, snow, or fog carry sulfur to the earth’s surface." Metadata X X X Synthetic nitrogen fertilizer application (kg N/ha/yr) This map depicts the mean rate of synthetic nitrogen fertilizer application to agricultural lands within each subwatershed (12-digit HUC) in kg N/ha/yr. Metadata X X X Thermoelectric water use (million gallons/day) This map estimates the millions of gallons of water used daily for thermoelectric power generation in each subwatershed (HUC-12). Thermoelectric power creates electricity through steam powered turbines. This map is based on water withdrawn and does not include water that is returned to the watershed. Metadata X Total nitrogen deposition (kg/ha) This map estimates the total annual deposition of nitrogen within each subwatershed (12-digit HUC) in kilograms per hectare. This map includes both dry and wet deposition of oxidized and reduced nitrogen. Metadata X X X X Total number of aquatic species "This map illustrates the total number of species associated with aquatic habitat that are listed as G1, G2, or in the federal endangered species program that may reside within each subwatershed (12-digit HUC)." Metadata X X X Total number of terrestrial species "This map illustrates the total number of species associated with terrestrial habitat that are listed as G1, G2, or in the federal endangered species program that may reside within each subwatershed (12-digit HUC). G1 and G2 denote Global Conservation Ranks classified by NatureServe. Terrestrial habitat refers to land areas such as forests, grasslands, deserts and rainforests." Metadata X X Total number of wetland species "This map illustrates the total number of species associated with wetland habitat that are listed as G1, G2, or in the federal endangered species program that may reside within each subwatershed (12-digit HUC). G1 and G2 denote Global Conservation Ranks classified by NatureServe." Metadata X X X Total oxidized nitrogen deposition (kg/ha) This map estimates the annual deposition of oxidized nitrogen within each subwatershed (12-digit HUC) in kilograms per hectare. This map includes both dry and wet deposition of oxidized nitrogen. Metadata X X X Total reduced nitrogen deposition (kg/ha) This map estimates the annual deposition of reduced nitrogen within each subwatershed (12-digit HUC) in kilograms per hectare. This map includes both dry and wet deposition of reduced nitrogen. Metadata X X X Total reptile species richness - US This map models the total number of reptile species that are likely to be present anywhere within each subwatershed (12-digit HUC). Metadata X Total sulfur deposition (kg/ha) This map estimates the annual deposition of sulfur within each subwatershed (12-digit HUC) in kilograms per hectare. This map includes both dry and wet deposition of sulfur. Metadata X X X X Value of cotton crops (dollars) This map depicts annual sales in dollars for cotton produced within each subwatershed (12-digit HUC). Metadata X Value of grain crops (dollars) This map depicts annual sales in dollars for major grain crops produced within each subwatershed (12-digit HUC). Metadata X Vegetable yields (thousand tons/yr) This map depicts the thousands of tons of vegetable crops that are grown annually within each subwatershed (12-digit HUC). Metadata X Water supply from reservoirs (million gallons) "This map estimates the millions of gallons of surface water in each subwatershed (12-digit HUC) that is contained in reservoirs and/or behind dams. This map only estimates volume and does not take into account water rights, designated uses, or previous appropriations." Metadata X X X