Trophic Classification of Washington Lakes Using Recconnaissance Data, Water Supply Bulletin 57

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: WA Dept. of Natural Resources
Publication_Date: 06/30/2005
Publication_Time: Unknown
Title:
Trophic Classification of Washington Lakes Using Recconnaissance Data, Water Supply Bulletin 57
Edition: 1st
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Publication_Information:
Publication_Place: Olympia, WA
Publisher: WA Dept. of Natural Resources
Online_Linkage: \\snarf\aqr\gis_shared\web_posts\wsb57.mdb
Description:
Abstract:
This is a GIS database version of the 1985 Water Supply Bulletin 57 "Trophic Classification of Washington Lakes Using Reconnaissance Data" by S.S. Sumioka and N.P. Dion. Water Supply Bulletin 57 (WSB57) describes the physical, cultural, chemical, and trophic characteristics of 134 lakes in WA State. Topics such as lake volume, number of nearshore homes, secchi-disk visibility, etc. (more than 60 attributes in all) are presented for each lake. Users may access a scanned hardcopy version of the Water Supply Bulletin 57 from the following website: <http://www.ecy.wa.gov/programs/eap/wsb/wsb_Lakes.html>.

A series of 134 points (each representing a specific lake described in WSB57) were created and moved to correspond with the DNR Hydro polygon layer. Each point was given a value in the DNR_CD field to describe the accuracy of the match. By virtue of the point being within the boundaries of the appropriate polygon, users can create a spatial join or other spatial overlay that will allow them to apply the attributes of the WSB57 to their polygon hydro layer of choice.

There are five tables that relate to the main GIS feature class attribute table (wsb57_points) using WSB57_CD as the relate/join field. The wsb57_main, wsb57_wq1, wsb57_apdx_b, and wsb57_apdx_c tables have separate metadata documents describing only the attributes and their definitions. Since the wsb57_wq2 table shares the same attribute definitions as the wsb57_wq1 table, attribute definitions for wsb43_wq1 can be applied to the wsb57_wq2 table. The following is a summary of the related tables and what they contain:

1) wsb57_main: Contains the information that appears in the physical data and cultural data sections of WSB57. 2) wsb57_wq1: Contains the water quality data for sample site 1 (if present). 3) wsb57_wq2: Contains the water quality data for sample site 2 (if present). 4) wsb57_apdx_b: Contains a summary of 1976 TSI and 1981 TSI and CV values for the 134 lakes described in WSB57. 5) wsb57_apdx_c: Contains a summary of TSI and CV values data for 777 lakes that are described in WSB43 and WSB57. This table is cross referenced to the WSB57_CD field as well as the WSB43_CD in the Water Supply Bulletin dataset (also distributed through the WA DNR website).

Purpose:
The WA Dept. of Natural Resources created this GIS layer primarily for the purpose of using the information to assist in the management of lake/pond resources in Washington State.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 06/03/1981
Ending_Date: 07/21/1981
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -123.427831
East_Bounding_Coordinate: -117.157246
North_Bounding_Coordinate: 49.019502
South_Bounding_Coordinate: 45.573813
Keywords:
Theme:
Theme_Keyword_Thesaurus:
Trophic Classification of Washington Lakes Using Recconnaissance Data
Theme_Keyword:
Trophic Classification of Washington Lakes Using Recconnaissance Data
Theme_Keyword: Water Supply Bulletin 57
Theme_Keyword: lake names
Theme_Keyword: lake locations
Theme_Keyword: lake drainage area
Theme_Keyword: lake elevation
Theme_Keyword: lake depth
Theme_Keyword: lake water quality
Theme_Keyword: lake water chemistry
Theme_Keyword: lake information
Theme:
Theme_Keyword_Thesaurus: Water Supply Bulletin 57
Place:
Place_Keyword_Thesaurus: Washington State
Place_Keyword: Washington State
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Philip Bloch
Contact_Organization: WA Dept. of Natural Resources - Aquatics Division
Contact_Position: Natural Resource Scientist
Contact_Address:
Address_Type: mailing and physical address
Address: Natural Resources Building - Aquatics Division
Address: 1111 Washington St. SE
City: Olympia
State_or_Province: WA
Postal_Code: 98504
Country: USA
Contact_Voice_Telephone: 360-902-1718
Contact_TDD/TTY_Telephone: 360-902-1125
Contact_Facsimile_Telephone: 360-902-1786
Contact_Electronic_Mail_Address: philip.bloch@wadnr.gov
Hours_of_Service: 8AM - 4:30PM
Contact_Instructions:
Note:

While Philip Bloch is the primary contact for this dataset, Chris Snyder (WADNR) is avalable to answer questions about technical methodology. His email is chris.snyder@wadnr.gov.

Data_Set_Credit:
WA Dept. of Natural Resources - Aquatics Division Chris Snyder, Julie Butler, April Vanderhoof
Security_Information:
Security_Classification: Unclassified
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.0.0.535

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The data is accurate per the information presented in the WSB57 hardcopy volumes. A QAQC assessment of several tables was performed (see DNR_QC_FLG, DNR_ER_FLG, and DNR_ER_DESC fields). Here are the results: wsb57_main: data entry was 99.75% accurate (2 error out of 810 entries inspected). wsb57_wq1: data entry was 99.65% accurate (6 errors out of 1734 entries inspected). wsb57_apdx_b: data entry was 100% accurate (0 errors out of 270 entries inspected). wsb57_apdx_c: data entry was 99.46% (1 error out 186 entries inspected). Other tables present in the dataset were not QCed.
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Explanation: See accuracy report.
Logical_Consistency_Report: The data are non-overlapping point features.
Completeness_Report:
The data is complete. However, the GIS database version lacks some items that are present in the hardcopy version such as the glossary, bathymetry maps, and aerial photos. Users should refer to the hardcopy materials for this information.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The point locations are as accurate as the source material allowed. Generally the points lie within a DNR Hydro lake polygon (see the DNR_CD field).
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The point locations are as accurate as the source material allowed.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: WA Department of Ecology
Publication_Date: 1985
Title:
Trophic Classification of Washington Lakes Using Reconnaissance Data, Water Supply Bulletin 57
Edition: 1st
Geospatial_Data_Presentation_Form: hardcopy data report
Publication_Information:
Publication_Place: Olympia, WA
Publisher: WA Dept. of Ecology
Source_Scale_Denominator: Not applicable
Type_of_Source_Media: Published hardcopy books
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 10/08/1971
Ending_Time: 09/16/1974
Source_Currentness_Reference: ground condition
Process_Step:
Process_Description:
1. The data were entered into a MS Access database 2. The point locations were created from the LAT_DMS and LON_DMS fields. 3. The points were moved to overlay the appropriate DNR Hydro lake polygon.
Process_Date: 20050101
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Chris Snyder
Contact_Organization: WA DNR
Contact_Position: GIS Analyst
Contact_Voice_Telephone: 360-906-1087
Contact_Electronic_Mail_Address: chris.snyder@wadnr.gov
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\DOCUME~1\csny490\LOCALS~1\Temp\xml42.tmp
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: d:\temp\xmlE5.tmp
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: d:\temp\xml10B.tmp
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: d:\temp\xml3DC.tmp
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: d:\temp\xml516.tmp
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: d:\temp\xml6E.tmp

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 134

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Lambert Conformal Conic
Lambert_Conformal_Conic:
Standard_Parallel: 45.833333
Standard_Parallel: 47.333333
Longitude_of_Central_Meridian: -120.500000
Latitude_of_Projection_Origin: 45.333333
False_Easting: 1640416.666667
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000802
Ordinate_Resolution: 0.000802
Planar_Distance_Units: survey feet
Geodetic_Model:
Horizontal_Datum_Name: D_North_American_1983_HARN
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: National Geodetic Vertical Datum of 1929
Altitude_Resolution: 1.000000
Altitude_Distance_Units: feet
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Depth_System_Definition:
Depth_Datum_Name: Local surface
Depth_Distance_Units: feet
Depth_Encoding_Method: Attribute values

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: wsb57_points
Entity_Type_Definition: GIS point feature class
Entity_Type_Definition_Source: Chris Snyder, WADNR
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: NAME
Attribute_Definition: Name of the lake as given in WSB57.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: DNR_CD
Attribute_Definition:
Describes the success DNR staff had in matching the spatial location to an appropriate water body in the DNR Hydro GIS layer
Attribute_Definition_Source: Chris Snyder, WA DNR 2005
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Match made to DNR Hydro polygon.
Enumerated_Domain_Value_Definition_Source: Chris Snyder, WA DNR 2005
Enumerated_Domain:
Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition:
Indicates that the lake was not included in the DNR Hydro layer (as of 05/31/2005), but the point was moved to the appropriate location as determined by DNR Orthophotos or USGS Topo maps. Generally these are "dry" or "seasonal" lakes.
Enumerated_Domain_Value_Definition_Source: Chris Snyder, WA DNR 2005
Enumerated_Domain:
Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition: These are lakes that could not be located.
Enumerated_Domain_Value_Definition_Source: Chris Snyder, WA DNR 2005
Enumerated_Domain:
Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition:
These are entries that describe groups of lakes (often time described specifically in subsequent entries). These points generally were not matched with a DNR Hydro polygon, and refer to named lake groups such as "Twin Lakes" where each of the Twin Lakes is described separately in detail in other WOLCODEs.
Enumerated_Domain_Value_Definition_Source: Chris Snyder, WA DNR 2005
Beginning_Date_of_Attribute_Values: 20050310
Ending_Date_of_Attribute_Values: 20050310
Attribute:
Attribute_Label: WB_LLID_NR
Attribute_Definition:
Water body latitude/longitude identification number. Warning - due to mapping inconsistencies, WB_LLID_NR may not always provide a proper water body link.
Attribute_Definition_Source: WADNR Hydro layer (WB featureclass)
Attribute:
Attribute_Label: DNR_X
Attribute_Definition: X coordinate of the point
Attribute:
Attribute_Label: DNR_Y
Attribute_Definition: Y coordinate of the point
Attribute:
Attribute_Label: WSB57_CD
Attribute_Definition:
This is the main relate field for the entire database, and serves as both a unique id and cross reference between the GIS dataset and the hardcopy volumes. It describes the bulletin.page number so 57.080 would describe the entry in bulletin 57, page 80.
Attribute_Definition_Source: Chris Snyder, WADNR
Overview_Description:
Entity_and_Attribute_Overview: See detailed descriptions.

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: WA DNR
Contact_Person: Ronda Hamrick
Contact_Position: Cartographer
Contact_Electronic_Mail_Address: ronda.hamrick@wadnr.gov
Resource_Description: exchangable data
Distribution_Liability:
Extreme care was used during the compilation of these data to ensure accuracy. However, due to the need to rely on outside sources of information, the Department of Natural Resources cannot accept responsibility for errors or omissions, and, therefo