# Map 6.2: Estimated Annual Runoff Coefficient for Typical Climatic Conditions

Metadata also available as

## Metadata:

- Identification_Information
- Data_Quality_Information
- Spatial_Data_Organization_Information
- Spatial_Reference_Information
- Entity_and_Attribute_Information
- Distribution_Information
- Metadata_Reference_Information

Identification_Information:
  Citation:
    Citation_Information:
      Originator: Houston Engineering, Inc.
      Publication_Date: June 2007
      Title:
        Map 6.2: Estimated Annual Runoff Coefficient for Typical Climatic Conditions
      Geospatial_Data_Presentation_Form: vector digital data
      Series_Information:
        Series_Name: Watershed Management Plan
      Publication_Information:
        Publisher: South Washington Watershed District
      Other_Citation_Details:
        Publication approved September 26, 2007 and adopted November 13, 2007.
      Online_Linkage:
        \\MG01\msraid\01proj\4876-000_SouthWashingtonWD_PlanUpdate\GIS\data\Metadata\Map6-2_EstimatedAnnualRunoff.shp
  Description:
    Abstract:
      This dataset presents estimated annual runoff coefficients for typical climatic conditions. The runoff coefficient values represent the annual fraction of total precipitation not retained on-site.

      Generally, the dataset was derived through modeling based on land use and soil types present. A Technical Memorandum dated February 7, 2008 from Houston Engineering, Inc. to the South Washington Watershed District provides a full description of how and why the data were developed.

      New developments are required to maintain the annual average predevelopment infiltration capacity of the site. The existing infiltration capacity for a specific area is primarily a function of the type of soils and amount of impervious surface. This dataset assists in quantifying existing infiltration capacity, expressed as an estimated annual runoff coefficient. The South Washington Watershed District has also developed a "Standards Manual" publication which discusses the use of this dataset in greater detail.

    Purpose:
      This dataset was developed in conjunction with the South Washington Watershed District Watershed Management Plan Update. Two key benefits of the file include 1) establishing a standard to enforce regulations for stormwater runoff volume control and 2) ensuring the standard incorporates variability in soils and land use across the watershed.
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: February 14, 2007
    Currentness_Reference: ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -93.022405
      East_Bounding_Coordinate: -92.852716
      North_Bounding_Coordinate: 44.972716
      South_Bounding_Coordinate: 44.767524
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: NA.
      Theme_Keyword:
        Infiltration, SWWD, South Washington, Volume Control, Standards, Watershed Management Plan
  Access_Constraints: None.
  Use_Constraints:
    Every attempt has been made to ensure that the information contained on this map is valid at the time of publication. South Washington Watershed District and Houston Engineering, Inc. recommend consulting the data publisher for each data source to obtain more information about the data layer. Additionally, South Washington Watershed District and Houston Engineering, Inc. disclaims any and all liability for damages incurred directly or indirectly as a result of errors, omissions or discrepancies and is not responsible for misuse or misinterpretation. For the most current information contact the appropriate data source publisher.
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: South Washington Watershed District
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 2302 Tower Drive
        City: Woodbury
        State_or_Province: MN
        Postal_Code: 55125
        Country: USA
      Contact_Voice_Telephone: 651-714-3715
  Native_Data_Set_Environment:
    Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.0.1324

Data_Quality_Information:
  Lineage:
    Process_Step:
      Process_Description: Dataset copied.
    Process_Step:
      Process_Description: Dataset copied.
      Source_Used_Citation_Abbreviation:
        S:\4876-000_SouthWashingtonWD_PlanUpdate\GIS\data\landuse_hydrologic_group_intersect

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: 10223

Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Grid_Coordinate_System:
        Grid_Coordinate_System_Name: Universal Transverse Mercator
        Universal_Transverse_Mercator:
          UTM_Zone_Number: 15
          Transverse_Mercator:
            Scale_Factor_at_Central_Meridian: 0.999600
            Longitude_of_Central_Meridian: -93.000000
            Latitude_of_Projection_Origin: 0.000000
            False_Easting: 500000.000000
            False_Northing: 0.000000
      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: Map6-2_EstimatedAnnualRunoff
    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: DRAINCLAS
      Attribute_Definition:
        Hydrologic Soil Group classification, from Washington County SSURGO.
      Attribute_Definition_Source: Houston Engineering, Inc.
    Attribute:
      Attribute_Label: INTERSECT
      Attribute_Definition:
        Intersection of land use and soil (Hydrologic Soil Group) datasets.
      Attribute_Definition_Source: Houston Engineering, Inc.
    Attribute:
      Attribute_Label: runoff_coe
      Attribute_Definition:
        Annual runoff coefficient. Reflects the fraction of annual precipitation that is not retained on a given polygon feature. Where Hydrologic Soil Group is potentially drained (e.g., A/D), the undrained soil condition is used for the runoff coefficient to compute the runoff coefficient. Where Hydrologic Soil Group is undefined, soil type "B" is used to compute the runoff coefficient. Land uses identified explicitly as aved surfaces or water surfaces are assigned a value of "1".
      Attribute_Definition_Source: Houston Engineering, Inc.
    Attribute:
      Attribute_Label: LANDUSE
      Attribute_Definition:
        Represents the land use condition based on Metropolitan Council land use dataset for 2000. Metropolitan land use categories are aggregated consistent with methods/approach in Washington County's study "Integrating Groundwater and Surface Water Management," 2005.
      Attribute_Definition_Source: Houston Engineering, Inc.

Distribution_Information:
  Resource_Description: Downloadable Data
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Transfer_Size: 5.848

Metadata_Reference_Information:
  Metadata_Date: 20080728
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Houston Engineering, Inc.
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 6901 East Fish Lake Road
        Address: Suite 140
        City: Maple Grove
        State_or_Province: MN
        Postal_Code: 55369
        Country: USA
      Contact_Voice_Telephone: 763-493-4522
  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

Generated by `mp` version 2.8.6 on Mon Jul 28 08:24:03 2008