Idd Sols Et Ressources Globales

  • Uploaded by: susCities
  • 0
  • 0
  • December 2019
  • PDF

This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA


Overview

Download & View Idd Sols Et Ressources Globales as PDF for free.

More details

  • Words: 4,161
  • Pages: 16
Forest Sustainability Indicators Information System Technical Notes Report Criterion 4. Conservation and Maintenance of Soil and Water Resources Indicator 8. Soil quality on forest land Metric 8.1. Soil pH Source USDA Forest Service, Forest Inventory and Analysis Citation Perry, Charles. 2005. USDA Forest Service, Forest Inventory and Analysis, Soil Quality Indicator. St. Paul, MN: USDA Forest Service, Forest Inventory and Analysis Program. Data development methodology Soil quality is monitored by the USDA Forest Service, Forest Inventory and Analysis (FIA) Program on a subset of the standard FIA plots. The sampling intensity is one plot to 96,000 acres and these plots are referred to as the FIA Phase 3 plots. Soil pH is assessed through the collection of soil samples, which are submitted to a regional laboratory for analysis. Soil pH is analyzed for two depths: 0-10 cm (0-4 inches) and 10-20 cm (4-8 inches). Soil pH at the 0-10 cm depth is reported in the map and graph. The data are mapped by U.S. EPA Environmental Monitoring and Assessment Program (EMAP) hexes. EMAP hexes are 160,000 acres--the same size as the old Forest Health Monitoring hexes and a little larger than the FIA Phase 3 hexes (96,000 acres); therefore, the coverage of EMAP hexes closely matches the availability of FIA soils data. Data were obtained from the USDA Forest Service, Forest Inventory and Analysis Program for the indicators information system through a special request. Data quality and usage tips The FIA soils protocols were designed for use with soils models for regional and national analysis. Since the sampling is not intensive enough to measure spatial distribution (expansion factors have not been developed), data are reported in the graph by the percentage of plots. The scale also limits the use of these data for State-level analysis (the extent of limitation varies by State and depends upon the specific use of the data). Regional-level data are cited as "2005"; however, the actual date of data collected varies for each State. Refer to the document "FIA Inventory Years for Indicator 8" under "Related Resources." No soil data were collected in the portion of Ecological Province 234 that is in the Northern United States region. Only one plot was sampled in both DE and RI. Date posted 28-OCT-05 Reporting cycle Data are collected by the USDA Forest Service, Forest Inventory and Analysis Program according to an annualized inventory. Each FIA Phase 3 plot is sampled once every 5 to 10 years. Since new data are collected annually, new data uploads are planned for 2007. Description of download table The download table includes the following columns: (1) YEAR (nominal year for data), (2) STATE_REGION_FLAG (specifies the scale), (3) STATE_ECO_NAME (State abbreviation or ecological province code), (4) SOIL_PH (categories data are reported by in the graph), (5) NOS_PLOTS_SOIL_MEASUREMENT (number of plots that had a pH within the category specified in column 4), (6) TOTAL_NUMBER_OF_PLOTS_MEASURED (the total number of plots in the State or eco province that have been sampled).

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

45 of 128

Additional data available The USDA NRCS National Soil Survey Center has additional soils data available on-line; see the link under "Other Data Sources."

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

46 of 128

Forest Sustainability Indicators Information System Technical Notes Report Criterion 4. Conservation and Maintenance of Soil and Water Resources Indicator 8. Soil quality on forest land Metric 8.2. Total soil carbon Source USDA Forest Service, Forest Inventory and Analysis Citation Perry, Charles. 2005. USDA Forest Service, Forest Inventory and Analysis, Soil Quality Indicator. St. Paul, MN: USDA Forest Service, Forest Inventory and Analysis Program. Data development methodology Soil quality is monitored by the USDA Forest Service, Forest Inventory and Analysis (FIA) Program on a subset of the standard FIA plots. The sampling intensity is one plot to 96,000 acres and these plots are referred to as the FIA Phase 3 plots. Soil carbon is assessed through the collection of soil samples, which are submitted to a regional laboratory for analysis. Soil carbon is analyzed for three depths: forest floor, 0-10 cm (0-4 inches), and 10-20 cm (4-8 inches). Total soil carbon (carbon at all three depths) is reported in the map and graph. The data are mapped by U.S. EPA Environmental Monitoring and Assessment Program (EMAP) hexes. EMAP hexes are 160,000 acres--the same size as the old Forest Health Monitoring hexes and a little larger than the FIA Phase 3 hexes (96,000 acres); therefore, the coverage of EMAP hexes closely matches the availability of FIA soils data. Data were obtained from the USDA Forest Service, Forest Inventory and Analysis Program for the indicators information system through a special request. Data quality and usage tips The FIA soils protocols were designed for use with soils models for regional and national analysis. Since the sampling is not intensive enough to measure spatial distribution (expansion factors have not been developed), data are reported in the graph by the percentage of plots. The scale also limits the use of these data for State-level analysis (the extent of limitation varies by State and depends upon the specific use of the data). Regional level data are cited as "2005"; however, the actual date of data collected varies for each State. Refer to the document "FIA Inventory Years for Indicator 8" under "Related Resources." No soil data were analyzed for DE. No soil data collected in the portion of Ecological Province 234 that is in the Northern United States region. Only one plot was sampled in RI. Date posted 27-DEC-05 Reporting cycle Data are collected by the USDA Forest Service, Forest Inventory and Analysis Program according to an annualized inventory. Each FIA Phase 3 plot is sampled once every 5 to 10 years. Since new data are collected annually, new data uploads are planned for 2007. Description of download table The download table includes the following columns: (1) YEAR (nominal year for data), (2) STATE_REGION_FLAG (specifies the scale), (3) STATE_ECO_NAME (State abbreviation or ecological province code), (4) SOIL_CARBON_RANGE (percent of carbon categories that are reported in the graph), (5) NO_PLOTS_SP_SOIL_MEASURD_RANGE (number of plots that had a total soil carbon percentage within the category specified in column 4), (6) TOT_NO_PLOTS_MEASURED (the total number of plots in the State or eco province that have been sampled).

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

47 of 128

Additional data available The USDA NRCS National Soil Survey Center has additional soils data available on-line; see the link under "Other Data Sources."

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

48 of 128

Forest Sustainability Indicators Information System Technical Notes Report Criterion 4. Conservation and Maintenance of Soil and Water Resources Indicator 8. Soil quality on forest land Metric 8.3. Estimated bare soil Source USDA Forest Service, Forest Inventory and Analysis Citation Perry, Charles. 2005. USDA Forest Service, Forest Inventory and Analysis, Soil Quality Indicator. St. Paul, MN: USDA Forest Service, Forest Inventory and Analysis Program. Data development methodology Soil quality is monitored by the USDA Forest Service, Forest Inventory and Analysis (FIA) Program on a subset of the standard FIA plots. The sampling intensity is one plot to 96,000 acres and these plots are referred to as the FIA Phase 3 plots. Estimates of bare soil are made visually, in four subplots within each plot. The data are mapped by U.S. EPA Environmental Monitoring and Assessment Program (EMAP) hexes. EMAP hexes are 160,000 acres--the same size as the old Forest Health Monitoring hexes and a little larger than the FIA Phase 3 hexes (96,000 acres); therefore, the coverage of EMAP hexes closely matches the availability of FIA soils data. Data were obtained from the USDA Forest Service, Forest Inventory and Analysis Program for the indicators information system through a special request. Data quality and usage tips The FIA soils protocols were designed for use with soils models for regional and national analysis. Since the sampling is not intensive enough to measure spatial distribution (expansion factors have not been developed), data are reported in the graph by the percentage of plots. The scale also limits the use of these data for State-level analysis (the extent of limitation varies by State and depends upon the specific use of the data). Regional-level data are cited as "2005"; however, the actual date of data collected varies for each State. Refer to the document "FIA Inventory Years for Indicator 8" under "Related Resources." No soil data were collected in the portion of Ecological Province 234 that is in the Northern United States region. Only one plot was sampled in both DE and RI. Date posted 27-DEC-05 Reporting cycle Data are collected by the USDA Forest Service, Forest Inventory and Analysis Program according to an annualized inventory. Each FIA Phase 3 plot is sampled once every 5 to 10 years. Since new data are collected annually, new data uploads are planned for 2007. Description of download table The download table includes the following columns: (1) YEAR (nominal year for data), (2) STATE_REGION_FLAG (specifies the scale), (3) STATE_ECO_NAME (State abbreviation or ecological province code), (4) BARE_SOIL_RANGE (percentage of bare soil categories that are reported in the graph), (5) NO_PLOTS_SP_SOIL_MEASURD_RANGE (number of plots that had a percentage of bare soil within the category specified in column 4), (6) TOT_NO_PLOTS_MEASURED (the total number of plots in the State or eco province that have been sampled). Additional data available

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

49 of 128

The USDA NRCS National Soil Survey Center has additional soils data available on-line; see the link under "Other Data Sources."

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

50 of 128

Forest Sustainability Indicators Information System Technical Notes Report Criterion 4. Conservation and Maintenance of Soil and Water Resources Indicator 8. Soil quality on forest land Metric 8.4. Bulk density Source USDA Forest Service, Forest Inventory and Analysis Citation Perry, Charles. 2005. USDA Forest Service, Forest Inventory and Analysis, Soil Quality Indicator. St. Paul, MN: USDA Forest Service, Forest Inventory and Analysis Program. Data development methodology Soil quality is monitored by the USDA Forest Service, Forest Inventory and Analysis (FIA) Program on a subset of the standard FIA plots. The sampling intensity is one plot to 96,000 acres and these plots are referred to as the FIA Phase 3 plots. Bulk density is assessed through the collection of soil samples, which are submitted to a regional laboratory for analysis. Bulk density is analyzed for two depths: 0-10 cm (0-4 inches) and 10-20 cm (4-8 inches). Bulk density at the 0-10 cm depth is reported in the map and graph. The data are mapped by U.S. EPA Environmental Monitoring and Assessment Program (EMAP) hexes. EMAP hexes are 160,000 acres--the same size as the old Forest Health Monitoring hexes and a little larger than the FIA Phase 3 hexes (96,000 acres); therefore, the coverage of EMAP hexes closely matches the availability of FIA soils data. Data were obtained from the USDA Forest Service, Forest Inventory and Analysis Program for the indicators information system through a special request. Data quality and usage tips The FIA soils protocols were designed for use with soils models for regional and national analysis. Since the sampling is not intensive enough to measure spatial distribution (expansion factors have not been developed), data are reported in the graph by the percentage of plots. The scale also limits the use of these data for State-level analysis (the extent of limitation varies by State and depends upon the specific use of the data). Regional-level data are cited as "2005"; however, the actual date of data collected varies for each State. Refer to the document "FIA Inventory Years for Indicator 8" under "Related Resources." No soil data were collected in the portion of Ecological Province 234 that is in the Northern United States region. Only one plot was sampled in both DE and RI. Date posted 27-DEC-05 Reporting cycle Data are collected by the USDA Forest Service, Forest Inventory and Analysis Program according to an annualized inventory. Each FIA Phase 3 plot is sampled once every 5 to 10 years. Since new data are collected annually, new data uploads are planned for 2007. Description of download table The download table includes the following columns: (1) YEAR (nominal year for data), (2) STATE_REGION_FLAG (specifies the scale), (3) STATE_ECO_NAME (State abbreviation or ecological province code), (4) BULK_DENSITY_RANGE (categories of bulk density that are reported in the graph; in gm per cubic cm), (5) BULK_DENSITY_RANGE_ORDER (database field used to generate the graph), (6) NO_PLOTS_SP_SOIL_MEASURD_RANGE (number of plots that had a bulk density value within the category specified in column 4), (7) TOT_NO_PLOTS_MEASURED (the total number of plots in the State or eco province

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

51 of 128

that have been sampled) Additional data available The USDA NRCS National Soil Survey Center has additional soils data available on-line; see the link under "Other Data Sources."

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

52 of 128

Forest Sustainability Indicators Information System Technical Notes Report Criterion 4. Conservation and Maintenance of Soil and Water Resources Indicator 8. Soil quality on forest land Metric 8.5. Calcium-aluminum ratio Source USDA Forest Service, Forest Inventory and Analysis Citation Perry, Charles. 2005. USDA Forest Service, Forest Inventory and Analysis, Soil Quality Indicator. St. Paul, MN: USDA Forest Service, Forest Inventory and Analysis Program. Data development methodology Soil quality is monitored by the USDA Forest Service, Forest Inventory and Analysis (FIA) Program on a subset of the standard FIA plots. The sampling intensity is one plot to 96,000 acres and these plots are referred to as the FIA Phase 3 plots. Calcium and aluminum are assessed through the collection of soil samples, which are submitted to a regional laboratory for analysis. Calcium and aluminum are analyzed for two depths: 0-10 cm (0-4 inches) and 10-20 cm (4-8 inches). The ratio of calcium to aluminum (at 0-10 cm) is reported in the map and graph. The data are mapped by U.S. EPA Environmental Monitoring and Assessment Program (EMAP) hexes. EMAP hexes are 160,000 acres--the same size as the old Forest Health Monitoring hexes and a little larger than the FIA Phase 3 hexes (96,000 acres); therefore, the coverage of EMAP hexes closely matches the availability of FIA soils data. Data were obtained from the USDA Forest Service, Forest Inventory and Analysis Program for the indicators information system through a special request. Data quality and usage tips The FIA soils protocols were designed for use with soils models for regional and national analysis. Since the sampling is not intensive enough to measure spatial distribution (expansion factors have not been developed), data are reported in the graph by the percentage of plots. The scale also limits the use of these data for State-level analysis (the extent of limitation varies by State and depends upon the specific use of the data). Regional-level data are cited as "2005"; however, the actual date of data collected varies for each State. Refer to the document "FIA Inventory Years for Indicator 8" under "Related Resources." No soil data were collected in the portion of Ecological Province 234 that is in the Northern United States region. Only one plot was sampled in both DE and RI. Date posted 02-NOV-05 Reporting cycle Data are collected by the USDA Forest Service, Forest Inventory and Analysis Program according to an annualized inventory. Each FIA Phase 3 plot is sampled once every 5 to 10 years. Since new data are collected annually, new data uploads are planned for 2007. Description of download table The download table includes the following columns: (1) YEAR (nominal year for data), (2) STATE_REGION_FLAG (specifies the scale), (3) STATE_ECO_NAME (State abbreviation or ecological province code), (4) CALCIUM_ALUMINIUM_RATIO (the categories of calcium-aluminum ratios that are reported in the graph), (5) NO_PLOTS_SP_SOIL_MEASURD_RANGE (number of plots that had a calcium-aluminum ratio within the category specified in previous column), (6) TOT_NO_PLOTS_MEASURED (the total number of plots in the State/region that have been sampled)

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

53 of 128

Additional data available The USDA NRCS National Soil Survey Center has additional soils data available on-line; see the link under "Other Data Sources."

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

54 of 128

Forest Sustainability Indicators Information System Technical Notes Report Criterion 4. Conservation and Maintenance of Soil and Water Resources Indicator 9. Area of forest land adjacent to surface water, and forest land by watershed Metric 9.1. Forested riparian area Source USDA Forest Service, Northeastern Area State and Private Forestry, Information Management and Analysis Citation Whitney, Rebecca. 2006. Riparian area land cover types based on the 1992 National Land Cover Dataset. USDA Forest Service, Northeastern Area State and Private Forestry, Information Management and Analysis. (Data received electronically 1/13/2006). Data development methodology Three layers of the National Hydrography Dataset (NHD) (USGS 1999) were used to generate riparian areas: water bodies, areas, and flowlines. The "waterbodies" layer depicts any water that has area, such as lakes, swamps, and ocean. The "areas" layer shows features, such as rivers that become too large to represent with only a line. The "flowlines" layer shows all linear features and includes information about the direction of flow through its topology. All three layers include an "Fcode" for each feature, which describes the feature. Flowline features coded as "Pipeline" were deleted because they do not have a riparian area. All NHD features were buffered by 30-meters and converted to a raster dataset (by USDA Forest Service, North Central Research Station). During this process, flowline buffers that intersected a water body or area features were removed. This prevented any flowline buffers from occurring inside lakes, swamps, etc. In addition, if a lake were surrounded by a forested wetland (swamp), only the buffer around the swamp would be included. The final 30-meter riparian buffer raster was overlaid with the 1992 National Land Cover Dataset to determine which land cover types fell within the riparian area. The information was then summarized by 8-digit watershed, State, ecological province, and region. NLCD cover types were grouped into the following categories (by 1992 NLCD code): Forested: 41--Deciduous Forest; 42--Evergreen Forest; 43--Mixed Forest; 91--Woody Wetland Developed: 21--Low Intensity Residential; 22--High Intensity Residential; 23--Commercial/ Industrial/ Transportation Agricultural: 61--Orchards/ Vineyards/ Other; 81--Pasture/ Hay; 82--Row Crops; 83--Small Grains; 85--Urban/ Recreational Grasses Other: 11--Open Water; 31--Bare Rock/ Sand/ Clay; 32--Quarries/ Strip Mines/ Gravel Pits; 33--Transitional; 51-Shrubland; 71--Grasslands/Herbaceous; 92--Emergent Herbaceous Wetlands Data quality and usage tips Data should be used for planning purposes only and may not reflect what is on the ground. Date posted 17-JAN-06 Reporting cycle When the 2001 MRLC NLCD are available for all 20 States, these analyses will be replicated and the results provided here. Description of download table

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

55 of 128

The download table includes the following columns: (1) YEAR, (2) STATE_ECO_HUC_REGION_FLAG (specifies the scale for the row), (3) STATE_ECO_HUC_REGION_NAME (Northern U.S., State abbreviation, ecological province code, or 8-digit HUC), (4) LAND_COVER_TYPE (forested, agricultural, developed, or other), (5) PERCENT_OF_RIPARIAN_AREA (percent of riparian area with specified land cover type). Additional data available Raw data sets for this metric include: U.S. Geological Survey 1999. 1992 National Land Cover Dataset. Sioux Falls, SD. Http://landcover.usgs.gov/natllandcover.as. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency. 1999. National Hydrography Dataset. Reston, VA. Http://nhd.usgs.gov/.

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

56 of 128

Forest Sustainability Indicators Information System Technical Notes Report Criterion 4. Conservation and Maintenance of Soil and Water Resources Indicator 9. Area of forest land adjacent to surface water, and forest land by watershed Metric 9.2. Forest land by watershed Source USDA Forest Service, Northeastern Area State and Private Forestry, Information Management and Analysis Citation Whitney, Rebecca. 2006. Forest land by watershed. USDA Forest Service, Northeastern Area State and Private Forestry, Information Management and Analysis. (Data received electronically 1/11/2006). Data development methodology The Multi-Resolution Land Characteristics Consortium, 1992 National Land Cover Dataset (NLCD) was compiled for the Northern United States with a spatial resolution of 30 meters. NLCD cover types were grouped into the following forested categories, by 1992 NLCD code: 41--Deciduous Forest; 42--Evergreen Forest; 43--Mixed Forest; 91--Woody Wetland. Percentage of forested land cover was then calculated for each 8-digit HUC (hydrologic unit code) watershed. The data was summarized to display the number of watersheds by percentage of forest categories (0-20, 21-40, 41-60, 61-80, and 81100), by State and for the Northern United States. Data quality and usage tips Data should be used for planning purposes only and may not reflect what is on the ground. Within the Northern United States, there are 548 8-digit HUC (hydrologic unit code) watersheds. All watersheds even partially within the Northern United States were included, even if the majority of the land area was positioned outside the region. Some watersheds cross one or more State lines and may be represented in one or more State graphs; therefore, the number of watersheds by State may total to more than the number of watersheds in the region. Date posted 17-JAN-06 Reporting cycle

Description of download table The download table for the first graph (by State and region) includes the following columns: (1) YEAR, (2) STATE_REGION_FLAG (specifies the scale for the row), (3) STATE_NAME (Northern U.S. or State abbreviation), (4) PERCENT_WATERSHED_FORESTED (0-20, 21-40, 41-60, 61-80, or 81-100), (5) PER_WATERSHED_FORESTED_ORDER (database field used to generate the graph), (6) NUMBER_OF_WATERSHEDS (number of watersheds that fall in the percentage forested category specified in column 4). Additional data available Raw data sets are available from the U.S. Geological Survey. 1999. 1992 National Land Cover Dataset. Sioux Falls, SD. http://landcover.usgs.gov/natllandcover.as.

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

57 of 128

Forest Sustainability Indicators Information System Technical Notes Report Criterion 4. Conservation and Maintenance of Soil and Water Resources Indicator 10. Water quality in forested areas Metric 10.1. Water quality in forested areas Source N/A Citation N/A Data development methodology No technical note information is provided since no data are reported on the Forest Sustainability Indicators Information System for this metric. Data quality and usage tips

Date posted

Reporting cycle

Description of download table

Additional data available

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

58 of 128

Forest Sustainability Indicators Information System Technical Notes Report Criterion 4. Conservation and Maintenance of Soil and Water Resources Indicator 10. Water quality in forested areas Metric 10.2. Stream miles impaired by percentage of watershed forested Source U.S. Environmental Protection Agency, 303(d) Impaired Waters List (GIS analysis by NA S&PF) Citation Whitney, Rebecca. 2006. Stream miles impaired by percentage of watershed forested. USDA Forest Service, Northeastern Area State and Private Forestry, Information Management and Analysis. (Data received electronically 1/17/2006). Data development methodology Under Section 303(d) of the Clean Water Act, States are required to report streams impaired by one or more pollutants, which, therefore, do not meet one or more water quality standards for a State. States are asked by the U.S. EPA to update 303(d) lists every 2 years. For this indicator, stream segments that were impaired by sediment, nutrients, and/or temperature were summarized for each 8-digit HUC (hydrologic unit code) watershed. The data were summarized to display the miles of impaired stream by percentage of forest categories (0-20, 21-40, 41-60, 61-80, and 81-100), by State and for the Northern United States. Data quality and usage tips Each State individually establishes its own water quality standards and monitoring protocol. As a result, stream impairment data varies from State to State. Use caution in comparing these data across States. Within the Northern United States, there are 548 8-digit HUC (hydrologic unit code) watersheds. All watersheds even partially within the Northern United States were included, even if the majority of the land area was positioned outside the region. Some watersheds cross one or more State lines and may be represented in one or more State graphs; therefore, the number of watersheds by State may total to more than the number of watersheds in the region. Date posted 18-JAN-06 Reporting cycle States are asked by the U.S. EPA to update 303(d) lists every 2 years. New data will be provided here as they become available. Description of download table The download table for the first graph includes the following columns: (1) YEAR, (2) STATE_REGION_FLAG (specifies the scale for the row), (3) STATE_REGION_NAME (Northern U.S. or State abbreviation), (4) IMPAIRMENT (sediment, nutrients, or temperature, (5) PERCENT_STREAM_MILE_IMPAIRMENT (percentage of stream miles with impairment specified in column 4), (6) PERCENT_FORESTED_CATEGORY (0-20, 21-40, 41-60, 61-80, or 81-100), (7) FORESTED_CATEGORY_ORDER (database field used to generate the graph). The download table for the second graph includes the following columns: (1) YEAR, (2) HUC_FLAG (specifies the scale as HUC only for this one), (3) HUC_8_DIGIT_CODE, (4) IMPAIRMENT (sediment, nutrients, or temperature), (5) PERCENT_STREAM_MILE_IMPAIRMENT (percentage of stream miles with impairment specified in column 4), (6) PERCENT_HUC_FORESTED (the percentage of the selected HUC that is forested). Additional data available Impaired streams data are available from the U.S. Environmental Protection Agency: NHD Indexed locations for Section 303(d) Listed Waters, http://www.epa.gov/waters/data/downloads.html.

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

59 of 128

See metric 10.1 for links to additional water quality data available from the U.S. Geological Survey and the U.S. Environmental Protection Agency.

01/19/2007 02:33 pm ET

http://www.fs.fed.us/sustainability/indicators

Page

60 of 128

Related Documents


More Documents from ""

December 2019 2
December 2019 1
December 2019 2
December 2019 1