| Abbreviation | Units | Description |
| AQUANATIVE | # species | The number of native aquatic species( fish and mussels) |
| AQUATE | # species | The number of threatened and endangered aquatic species (fish and mussels) |
| C5FS | % | The percentage of children in families and subfamilies that are between 0-5 years of age |
| INDTHPTH | deaths/1000 births | The number of infant deaths per every 1000 live births |
| INT2 | % | The percentage of forest habitat called interior measured at 2 hectare scale |
| INT65 | % | The percentage of forest habitat called interior measured at 65 hectare scale |
| MIGSCENARIO | # of scenarios | The number of migratory scenarios for long-distance forest migrants that use a particular watershed. |
| NATCOVERPCT | % | The percentage of forest with species that match potential vegetation designated by Kuchler |
| NTCMPPLM | % | The percent of household units with incomplete plumbing in 1990. |
| POV65 | % | The percentage of the population that is older than 65 years and is below the poverty level |
| PRAGFM | % | The proportion of persons employed in agriculture, forestry and fisheries |
| PRMINE | % | The proportion of persons employed in mining |
| PSOIL | % | The proportion of the watershed that is estimated to lose more than 1 ton/acre/year of soil due to erosion |
| RIPFOR | % | The proportion of total stream length with adjacent forest land cover |
| TERRNATIVE | # species | The number of native birds, mammals, butterflies, amphibians, and reptiles |
| TERRTE | # species | The number of threatened and endangered birds, mammals, butterflies, amphibians, and reptiles |
| WETLNDSPCT | % | The percentage of watershed classified as wetlands |
| Abbreviation | Units | Description |
| AGSL | % | The proportion of the watershed with agriculture land cover with slopes that are greater than 9% |
| AQUAEXOTIC | # species | The number of exotic aquatic species ( fish and mussels) |
| DAMS | dams/1000km | The number of dams present for every 1000 kilometers of stream length |
| EDGE2 | % | The percentage of forest habitat called edge measured at a 2 ha. scale |
| EDGE65 | % | The percentage of forest habitat called edge measured at a 65 ha. scale |
| FORCOVDEFOL | % | The percent of forest cover defoliated and with mortality as a proportion of forest in a watershed |
| FUNGICIDE | lbs/acre | The number of pounds per acre of fungicide loaded into streams on an annual basis |
| GYPSYMOTH | risk? | The historical distribution of gypsy moth infestation from 1972-2002 |
| HARDCHIPMIL | tons | The volume of hardwood estimated to be available for chip mills and other low-grade uses |
| HERBICIDE | lbs/acre | The number of pounds per acre of herbicide (atrazine) loaded into streams on an annual basis. |
| IMPLCPCT | % | The percent of impervious land surface (parking lots, rooftops, roads) per watershed |
| INSECTICIDE | lbs/acre | The number of pounds per acre of insecticide loaded into streams on an annual basis |
| NBLDPM97 | % | The percent of new private building permits issued in 1997 |
| NITRATEGW | prob. | The probability of nitrate presence in ground water |
| NO3DEPMODEL | kg/ha | The kilograms per hectare of modeled annual wet depostion of nitrate based on averages from 1987-1999 |
| OZONE8HR | ppm-hrs | Ozone (8 hr max) is a human health indicator and are given in parts per billion (ppb) |
| POPDENS | people/sq. mile | The number of people per square mile |
| POPGROWTH | % | The annual population growth rate from 1990-2000 |
| RDDENS | m/ha. | The number of meters of road per hectare |
| RIPAG | % | The proportion of total stream length with adjacent agriculture land cover |
| SO4DEPMODEL | kg/ha | The kilograms per hectare of modeled annual wet depostion of sulfate, calculated based on averages from 1987-1999. |
| SOFTCHIPMIL | tons | The volume of softwood estimated to be available for chip mills and other low-grade uses |
| STRD | % | The number of road crossings per total stream length |
| SUM06 | ppb | The cumulative sum of all hourly ozone concentrations equal to or above 0.06 ppm (or 60 ppb) for hours between 7am and 7pm. the SUM06 index is an indicator of ozone exposure that plants receive during daylight hours. |
| TERREXOTIC | # species | The number of exotic birds, mammals, butterflies, amphibians, and reptiles |
| TOTALN | kg/ha/yr | The total estimated nitrogen in streams predicted by using land cover information |
| TOTALP | kg/ha/yr | The estimated total phosphorous in streams predicted from land cover information |
| UINDEX | % | The proportion of the watershed with agriculture land or urban land use |
| UVB | IRRADIANCE (J/sq. me | The average annual UV-B Irradiance |
