Identification_Information: Citation: Citation_Information: Originator: Lori Fuller U.S. Geological Survey Publication_Date: February 2008 Title: Lake_Average_Chla_2004 Geospatial_Data_Presentation_Form: vector digital data Online_Linkage: Description: Abstract: Predicted Chlorophyll a and Trophic state index values for Michigan inland lakes. U.S. Geological Survery and/or Cooperative Lakes Monitoring Program volunteer measurements (run by the Michigan Department of Environmental Quality and the Michigan Lakes and Streams Association) were related to Landsat 7 ETM+ or Landsat 5 TM satellite data to produce regression equations that predict Chlorophyll a and Trophic state index Values for Michigan inland lakes greater than 25 acres if the satellite imagery was free of clouds and cloud shadows. One averaged value was averaged from all predicted values by 30-meter cells for each Michigan inland lake greater than 25 acres. Purpose: Developed to predict Chlorophyll a and Trophic state index values for Michigan inland lakes. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: 2004 Calendar_Date: 2004 Currentness_Reference: Last modified February 2008 Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -85.581288 East_Bounding_Coordinate: -81.310993 North_Bounding_Coordinate: 45.548329 South_Bounding_Coordinate: 41.662201 Keywords: Theme: Theme_Keyword: trophic status index Theme_Keyword: Chlorophyll a Access_Constraints: None Use_Constraints: Use with caution as Chlorophyll a and Trophic state index values are predictions. Actual measurements taken by the U.S. Geological Survey can be found at http://waterdata.usgs.gov/mi/nwis Cooperative Lakes Monitoring Program volunteer measurements (run by the Michigan Department of Environmental Quality and the Michigan Lakes and Streams Association) can be found at:http://www.michigan.gov/deq/0,1607,7-135-3313_3686_3731---,00.html Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350 Data_Quality_Information: Lineage: Process_Step: Process_Description: Source_Used_Citation_Abbreviation: Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: G-polygon Point_and_Vector_Object_Count: 2160 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Oblique Mercator Oblique_Mercator: Scale_Factor_at_Center_Line: 0.999600 Oblique_Line_Azimuth: Azimuthal_Angle: 337.255556 Azimuth_Measure_Point_Longitude: -86.000000 Latitude_of_Projection_Origin: 45.309167 False_Easting: 2546731.496000 False_Northing: -4354009.816000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000000 Ordinate_Resolution: 0.000000 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Lake_Average_Chla_2004 Attribute: Attribute_Label: FID 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: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: NAME Attribute_Definition: Name of lake Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy_Explanation: Lake name from: Michigan Department of Natural Resources, Fisheries Division, Institute for Fisheries Research, 2004 http://www.mcgi.state.mi.us/mgdl/Hydrography/metadata/lake_polygons_200403.htm Attribute: Attribute_Label: COUNTY Attribute_Definition: County lake within Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy_Explanation: County name from: Michigan Department of Natural Resources, Fisheries Division, Institute for Fisheries Research, 2004 http://www.mcgi.state.mi.us/mgdl/Hydrography/metadata/lake_polygons_200403.htm Attribute: Attribute_Label: AREA_ACRES Attribute_Definition: Area of lake in acres Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy_Explanation: Area in acres from: Michigan Department of Natural Resources, Fisheries Division, Institute for Fisheries Research, 2004 http://www.mcgi.state.mi.us/mgdl/Hydrography/metadata/lake_polygons_200403.htm Attribute: Attribute_Label: AREA_HECTA Attribute_Definition: Area of lake in hectares Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy_Explanation: Area in hectares from: Michigan Department of Natural Resources, Fisheries Division, Institute for Fisheries Research, 2004 http://www.mcgi.state.mi.us/mgdl/Hydrography/metadata/lake_polygons_200403.htm Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of lake Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy_Explanation: Perimeter from: Michigan Department of Natural Resources, Fisheries Division, Institute for Fisheries Research, 2004 http://www.mcgi.state.mi.us/mgdl/Hydrography/metadata/lake_polygons_200403.htm Attribute: Attribute_Label: AVG_CHLA Attribute_Definition: Average Chlorophyll a value for lake calculated from predicted Chlorophyll a values from all 30-meter cells within lake Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy_Explanation: calculated from predicted values Attribute: Attribute_Label: AVG_TSI Attribute_Definition: Average Trophic state index value for lake calculated from predicted trophic state index values from all 30-meter cells within lake Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy_Explanation: calculated from predicted values Attribute: Attribute_Label: CHLA_GROUP Attribute_Definition: Seven groups were created for display purposes Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy_Explanation: calculated from predicted values Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Lori Fuller Contact_Organization: U.S. Geological Survey Contact_Position: Geographer Contact_Voice_Telephone: 517 887-8911 Contact_Electronic_Mail_Address: lmfuller@usgs.gov Resource_Description: Downloadable Data Standard_Order_Process: Send requests to above contact information to acquire data Digital_Form: Digital_Transfer_Information: Transfer_Size: 6.08 MB (6,386,020 bytes) Fees: No fee Metadata_Reference_Information: Metadata_Date: 20080220 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Lori Fuller Contact_Address: Address_Type: 6520 Mercantile Way Suite 5 City: Lansing State_or_Province: MI Postal_Code: 48911 Contact_Voice_Telephone: 517 887-8911 Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile