Idaho 2008 305(b)/303(d) Integrated Report (Final)

Idaho 2008 305(b)/303(d) Integrated Report (Final)

Frequently-asked questions:

What does this data set describe?

Title:
Idaho 2008 305(b)/303(d) Integrated Report (Final)

Abstract: 
Idaho 2008  305(b) & 303(d) Integrated Report - Water Quality.

Every two years, DEQ is required by the federal Clean Water Act to conduct a comprehensive analysis of Idaho's water bodies to determine whether they meet state water quality standards and support beneficial uses or if additional pollution controls are needed. This analysis is summarized in an "Integrated Water Quality Monitoring and Assessment Report" (Integrated Report), which is submitted to the U.S. Environmental Protection Agency (EPA) for approval. The report serves as a guide for developing and implementing water quality improvement plans (total maximum daily loads, or TMDLs) to protect water quality and achieve federal and state water quality standards.

Supplemental information: 
Idaho Waterquality Standards;
http://www.deq.idaho.gov/water/data_reports/surface_water/monitoring/integrated_report.cfm

http://www.deq.idaho.gov/water/data_reports/surface_water/monitoring/standards.cfm

IDEQ Surface Water Monitoring Program

http://www.deq.idaho.gov/water/data_reports/surface_water/monitoring/overview.cfm

  1. How should this data set be cited?

    ID DEQ, 20090430, Idaho 2008 305(b)/303(d) Integrated Report (Final): Idaho Department of Environmental Quality (IDEQ), Boise, ID USA.

    Online links:
    Other citation details:
    Waterbody Assessment Guidance

  2. What geographic area does the data set cover?

    Bounding coordinates:
    West: -117.530945
    East: -110.665395
    North: 49.039492
    South: 41.929951

  3. What does it look like?

    Thumbnail image:

  4. Does the data set describe conditions during a particular time period?

    Beginning date: 20010630
    Ending date: 20051212
    Currentness reference: 
    20090601

  5. What is the general form of this data set?

    Geospatial data presentation form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      Indirect spatial reference:
      http://www.deq.idaho.gov/water/data_reports/surface_water/monitoring/integrated_report.cfm

      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • String (75631)

    2. What coordinate system is used to represent geographic features?

      The map projection used is Transverse Mercator.

      Projection parameters:
      Transverse Mercator
      Scale factor at central meridian: 0.999600
      Longitude of central meridian: -114.000000
      Latitude of projection origin: 42.000000
      False easting: 2500000.000000
      False northing: 1200000.000000

      Planar coordinates are encoded using coordinate pair.
      Abscissae (x-coordinates) are specified to the nearest 0.000000.
      Ordinates (y-coordinates) are specified to the nearest 0.000000.
      Planar coordinates are specified in meters.

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.

      Vertical coordinate system definition:
      Altitude system definition:
      Altitude resolution: 1.000000
      Altitude encoding method: Explicit elevation coordinate included with horizontal coordinates

  7. How does the data set describe geographic features?

    IDEQ305B_2008_Strms
    2008 305(b) Integrated Report (Source: ADB Ver 2.3 2008)

    RCH_CODE
    USGS NHD Reach Code (Source: USGS)

    ATTR_VAL
    ADB-RIT Field for Waterbody ID, links to Waterquality Standards (Source: DEQ WBAG II)

    ENTITY_ID
    ADB-RIT Field for Assessment Unit ID (Source: WBAG - DEQ- Joins to Support Status, Pollutants)

    TYPE
    SCODE Type Desciption, Intermittant, Perennial, etc (Source: USGS NHD)

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    BASIN
    USGS Basin Name, Clearwater, Panhandle, Salmon,Upper Snake, Southwest, Bear River (Source: USGS)

    DEQ_ADM
    ID DEQ regional office area of Responsibility (Source: DEQ)

    HUC4CODE
    4th Field Subbasin Code (Source: USGS)

    HUCNAME
    4th Field Subbasin Name (Source: USGS)

    STREAM
    Stream Name for 100K Streams (Source: USGS - NHD, GNIS)

    Support
    ADB Support Status (Source: Water Quality Support Status)

    WBID
    IDEQ Waterbody ID Code (Source: DEQ)

    STRAHLER
    Strahler Stream Order for 100K Stream (Source: Derived)

    SECTION_V
    Section V, Catetory 5, 303D Listed Streams (Source: ADB Category 5)

    WB_NAME
    Assessment Unit  Extent Description (Source: DEQ Waterbody  Name + Stream Order)

    WATERBODY
    Waterbody Name or Description (Source: IDEQ-WBAG)

    SHAPE
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    STRMILES
    Stream Mileage (Source: derived)

    WEBLINK
    Hyperlink, Hotlink field to Status Report (Source: DEQ)

    Entity and attribute overview: 
     Assessment units are groups of similar streams within a subbasin that have similar land use practices, ownership, or land management. Assessment units and water quality limited segments do not always correlate, so it can be difficult to compare directly from an old §303(d) list or §305(b) report to a current Integrated Report.

    Entity and attribute detail citation: 
    Various
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Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

    • ID DEQ

  2. Who also contributed to the data set?

    ID DEQ, EPA, Research Triangle Institute, USGS-NHD Program

  3. To whom should users address questions about the data?

    Nicole Deinarowicz
    DEQ
    303(d) 305(B) Program Manager
    1410 N Hilton
    Boise, ID 83706

    208 373 - 0502 (voice)
    Nicole.Deinarowicz@deq.idaho.gov
    Hours of Service: 8:00 - 5:00
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Why was the data set created?

The Integrated Report serves three functions. First, it is a reporting requirement of the Clean Water Act, so DEQ must prepare an Integrated Report to be in compliance with federal law. Second, it provides the public the opportunity to learn about and comment on the status of all of Idaho's waters. 

Third, the Integrated Report compiles environmental data and information from all components of DEQ's surface water quality program, as well as from other agencies, organizations, and individuals, which gives water quality managers a comprehensive look at the relative quality of all of Idaho's water bodies and helps them to set priorities and allocate resources accordingly.

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How was the data set created?

  1. Where did the data come from?

    http://www.deq.idaho.gov/water/data_reports/surface_water/monitoring/integrated_report.cfm#2002 (source 1 of 1)

    Nicole Deinarowicz, 20090430, http://www.deq.idaho.gov/water/data_reports/surface_water/monitoring/integrated_report_2002_draft_entire.pdf.

    Type of source media: NHD 100k Reach Index Files - Digital GIS
    Source scale denominator: 1:000,000
    Source contribution: 
    IDEQ Regional/State office Surface Water quality analysts

  2. What changes have been made?

    Date: 20001111 - 20090315 (change 1 of 2) 
    Final support status was exported from ADB/WQSATTAINMENTS and joined to Idaho 305B Streams by assesment Unit.

Orginal linework was linear referenced to 100K National Hydrography dataset (NHD) by waterbody ID and Stream Order and imported into ArcSDE.

    Person responsible for change:
    Sean Coyle
    IDEQ
    GIS analyst
    1410 N Hilton
    Boise, ID 83706

    1-208 373 - 0502 (voice)
    Sean.Coyle@deq.idaho.gov
    Hours of Service: 8:00 - 5:00 M-F

    Data sources used in this process:
    • http://www.epa.gov/owow/monitoring/georef/RIT.htm

    Data sources produced in this process:
    • http://www.deq.idaho.gov/water/data_reports/surface_water/monitoring/integrated_report.cfm#2002

    Date: 20090521 (change 2 of 2) 
    Dataset copied.

    Data sources used in this process:
    • Server=10.220.7.169; Service=5151:esri_sde; Database=RASTERS; Version=sde.DEFAULT

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How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    Consistent with USGS NHD 100K hydrography, Idaho DEQ Water Quality Standards, WBAG 2.0

  2. How accurate are the geographic locations?

    1:100,000 +- 167 Feet

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    Complete with ADB ver 2.3 Support Status

  5. How consistent are the relationships among the observations, including topology?

    Topology not verified, NHD-RIT events were converted to shapefiles, merged into a statewide shapefile and imported into ArcSDE Geodatabase SQL Server.  Flow or connectivity between subbasins not currently established.

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How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access constraints: None
Use constraints: 
Time period, scale  and accuracy of 100K NHD Streams

Distributor 1 of 1

  1. Who distributes the data set?

    Bruce Godfrey
    Idaho Geospatial Data Clearinghouse
    GIS Specialist
    1000 West Hubbard Avenue, Suite 242
    Coeur d'Alene, ID 83814-2277

    208.292.1407 (voice)
    bgodfrey@uidaho.edu

  2. What's the catalog number I need to order this data set?

  3. What legal disclaimers am I supposed to read?

    Although these data have been processed successfully on a computer system at the Idaho Geospatial Data Clearinghouse, no warranty, expressed or implied, is made regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty.

  4. How can I download or order the data?

  5. Is there some other way to get the data?

  6. What hardware or software do I need in order to use the data set?

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Who wrote the metadata?

Dates:
Last modified: 20090610

Metadata author:
Jim Szpara
ID DEQ
GIS
1410 N Hilton
Boise, Idaho 83706

208 373 - 0502 (voice)
jim.szpara@deq.idaho.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata(FGDC-STD-001-1998)

Metadata extensions used:
  • http://www.esri.com/metadata/esriprof80.html

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