Lakes of Idaho (303(d) Impaired - 1998)

Lakes of Idaho (303(d) Impaired - 1998)

Frequently-asked questions:

What does this data set describe?

Title:
Lakes of Idaho (303(d) Impaired - 1998)

Abstract: 
Impaired waterbodies (lakes) 1998 EPA reporting year.

With over 92,000 miles of rivers and streams and over 100 lakes and reservoirs, water is one of Idaho's most important resources. Our rivers, lakes, streams, and wetlands not only provide great natural beauty, they supply the water necessary for drinking, recreation, industry, agriculture, and aquatic life. 

 
DEQ's Surface Water Program is responsible for assuring Idaho's streams, rivers, lakes, reservoirs, and wetlands meet their designated beneficial uses and Idaho water quality standards.

Supplemental information: 
see:   http://www.deq.idaho.gov/water/prog_issues/surface_water/overview.cfm

  1. How should this data set be cited?

    Idaho Dept of Environmental Quality, 19980630, Lakes of Idaho (303(d) Impaired - 1998): Idaho Department of Environmental Quality (IDEQ), Boise, ID USA.

    Online links:
    Other citation details:
    http://www.deq.state.id.us/water/data_reports/surface_water/monitoring/overview.cfm#wbag

  2. What geographic area does the data set cover?

    Bounding coordinates:
    West: -117.444617
    East: -111.166998
    North: 48.345290
    South: 42.023723

  3. What does it look like?

    Thumbnail image:

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

    Calendar date: 19980000
    Currentness reference: 
    1996 - 1998

  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?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • G-polygon (100)

    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 0.001024.
      Ordinates (y-coordinates) are specified to the nearest 0.001024.
      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?

    lake303d98_id_ideq
    1998 EPA reported Impaired Lakes

    WQLBNK_ID
    Internal ESRI ID

    HUC
    4th Field HUC

    WATERBODY
    Waterbody Name or Island polygon (Source: USGS)

    WB
    Waterbody  ID Code (Source: IDEQ)

    WQL
    Water Quality Limited ID (Source: IDEQ)

    WQLSEG
    Unique Segment ID (Source: IDEQ)

    ACTIVE
    Status of impairment (Source: IDEQ)

    EXPIRE
    Expiration Date (Source: Date of TMDL completion)

    YEARDUE
    TMDL Due Date

    THREAT
    Pollutant (Source: Cause or Pollutant)

    TRIBAL
    On Tribal lands

    BACT
    Bacteria

    DO
    Dissolved Oxygen

    FLOWALT
    Flow Alteration

    HABALT
    Habitat Alteration

    MET_HG
    Metals - Mercury

    MET
    Metals Unknown

    NH3
    Amonia

    NUTR
    Nutriants

    O_G
    Oil & Gas

    ORG
    Organics

    PEST
    Pesticides

    PH
    PH

    SAL
    Salinity

    SED
    Sediment

    TDG
    Total Dissolved Gases

    TEMP_
    Temperature

    STATUS
    Status, Current, Delisted etc (Source: IDEQ)

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    UNKN
    Unknown

    SHAPE
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    SHAPE_area
    Area of feature in internal units squared. (Source: ESRI)

    Positive real numbers that are automatically generated.

    SHAPE_len
    Entity and attribute overview: 
    EPA-USGS Lakes and waterbodies
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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)

    • Idaho Dept of Environmental Quality

  2. Who also contributed to the data set?

    Idaho Dept of Environmental Quality

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

    Michael Edmondson
    Idaho Department of Environmental Quality
    303(d) Program Officer
    1410 N Hilton
    Boise, Idaho 83704

    208 373 - 0257 (voice)
    medmondson@deq.state.id.us
    Hours of Service: 8:00 - 4:00 PM
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Why was the data set created?

Clean water Act, Impaired waters of Idaho

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How was the data set created?

  1. Where did the data come from?

    Type of source media: Epa Reach files
    Source scale denominator: 1:100,000

  2. What changes have been made?

    Date: 1998 (change 1 of 3) 
    Waterbody polygons were selected and attributed with impairment status per IDEQ's monitoring program.

    Person responsible for change:
    Michael Edmonson
    IDEQ
    305(b) 303(d) Program Coordinator
    1410 N Hilton
    Boise, Idaho 83706

    208 373 - 0502 (voice)
    michael.edmonson@deq.idaho.gov

    Dataset copied.

    Data sources used in this process:
    • Server=gis-boi-1; Service=esri_sde; Database=deqgis83; User=gisadmin; Version=sde.DEFAULT

    Dataset copied.

    Data sources used in this process:
    • Server=gis-boi-1; Service=esri_sde; Database=deqgis; User=jszpara; 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?

    Unknown

  2. How accurate are the geographic locations?

    1:100,000 Hydrology of Idaho

  3. How accurate are the heights or depths?

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

    Complete for 1998 Reporting Cycle

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

    Unknown

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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: 
None, 100k Hydrology for Scale, resolution and time peroid.

Distributor 1 of 1

  1. Who distributes the data set?

    Sean Coyle
    DEQ
    GIS Analyst
    1410 N Hilton
    Boise, ID 83706

    208 373 - 0502 (voice)
    sean.coyle@deq.idaho.gov
    Hours of Service: 8:00 - 5:00 MT

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

    ID 303(d) Lakes and Waterbodies, Impaired Waterbodies for 1998 reporting year.

  3. What legal disclaimers am I supposed to read?

    Restriction of Liability: Neither the State of Idaho nor the Idaho Department of Environmental Quality, nor any of their employees make any warranty, express or implied, or assume any legal liability or responsibility for the accuracy, completeness or usefulness of any information or data provided.  Metadata is provided for all data sets, and no data should be used without first reading and understanding its limitations. The data could include technical inaccuracies or typographical errors. The Department of Environmental Quality may update, modify, or revise the data used at any time, without notice.

  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: 20060918

Metadata author:
Michael Edmonson
DEQ
303(d) 305(b) Program Coordinator
1410 N Hilton
Boise, Idaho 83706

208 373 - 0502 (voice)
michael.edmonson@deq.idaho.gov
Hours of Service: 8:00 - 5:00 MT

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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