Washington State Department of Ecology

Baseflow Stations

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: Washington State Department of Ecology

Publication_Date: 20000330

Title: Baseflow Stations

Edition: 1

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: Baseflow Stations

Publication_Information:

Publication_Place: Olympia, Washington
Publisher: Washington State Department of Ecology

Online_Linkage: http://www.ecy.wa.gov/services/gis/data/data.htm#b

Description:

Abstract:: Automated hydrograph separation techniques were used to evaluate the groundwater contribution to total streamflow (baseflow) at active and inactive stream guaging stations throughout Washington State. Discharge records for 582 guaging stations, with at least three complete water years of daily mean streamflow data, were downloaded from the U.S. Geological Survey (USGS) National Water Information System. Station characteristics were compiled for each gage, including period of streamflow record, type and degree of regulation affecting the gage, watershed drainage area, USGS station number, station name, and gage location.
Summary statistics were calculated for annual mean streamflow and annual 7-day low flow for all 582 stations. Monthly, and in some cases annual, statistics for baseflow were then estimated using a USGS hydrograph separation software program called HYSEP (Sloto and Crouse, 1996) for those stations judged to be free of significant snowmelt or regulation effects.
Purpose:: To improve our understanding of the baseflow characteristics of Washington rivers and streams and the role groundwater discharge plays in maintaining streamflow.
Supplemental_Information:: The methods used to define the baseflow and streamflow statistics are described in the following report: Estimated Baseflow Characteristics of Selected Washington Rivers and Streams, Water Supply Bulletin No. 60, (Publication No. 99-327) by Sinclair, K. A., and Pitz, C. F. 1999. The report is available at <http://www.ecy.wa.gov/biblio/99327.html>. Users of this data are strongly encouraged to read the report to better understand the limitations and potential uses of this information.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 19991001

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -124.695291
East_Bounding_Coordinate: -116.769730
North_Bounding_Coordinate: 49.209885
South_Bounding_Coordinate: 45.560808

Keywords:

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: streamflow
Theme_Keyword: baseflow
Theme_Keyword: groundwater
Theme_Keyword: drainage

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: Washington
Place_Keyword: Pacific
Place_Keyword: Northwest

Access_Constraints: None

Use_Constraints: <http://www.ecy.wa.gov/copyright.html>

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Washington State Department of Ecology
Contact_Person: Kirk Sinclair

Contact_Position: Environmental Specialist

Contact_Address:

Address_Type: mailing address
Address: P.O. Box 47600
City: Olympia
State_or_Province: Washington
Postal_Code: 98504-7600
Country: United States of America

Contact_Address:

Address_Type: physical address
Address: 300 Desmond Drive
City: Olympia
State_or_Province: Washington
Postal_Code: 98503-1274
Country: United States of America

Contact_Voice_Telephone: (360) 407-6557

Contact_Facsimile_Telephone: (360) 407-6884

Contact_Electronic_Mail_Address: kirk.sinclair@ecy.wa.gov

Hours_of_Service: 0800-1700 (Pacific)

Browse_Graphic:

Browse_Graphic_File_Name: <http://www.ecy.wa.gov/services/gis/data/strmflow/baseflow.gif>
Browse_Graphic_File_Description: Simple image
Browse_Graphic_File_Type: GIF

Data_Set_Credit:

Washington State Department of Ecology, U.S. Geological Survey (USGS)

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:

Completeness_Report: Data set is complete

Lineage:

Process_Step:

Process_Description:

See published report at <http://www.ecy.wa.gov/biblio/99327.html> for a detailed description of the data compilation and analysis methods.

Process_Date: 1999

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Washington State Department of Ecology
Contact_Person: Kirk Sinclair

Contact_Position: Groundwater Water Quality Investigations

Contact_Address:

Address_Type: mailing address
Address: PO Box 47600
City: Olympia
State_or_Province: Washington
Postal_Code: 98504-7600
Country: United States of America

Contact_Address:

Address_Type: physical address
Address: 300 Desmond Drive
City: Olympia
State_or_Province: Washington
Postal_Code: 98504-1274
Country: United States of America

Contact_Voice_Telephone: (360) 407-6557

Contact_Facsimile_Telephone: (360) 407-6884

Contact_Electronic_Mail_Address: kirk.sinclair@ecy.wa.gov

Hours_of_Service: 0800-1700 (Pacific)

Cloud_Cover: Unknown

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: 582

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 4

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: 0.004096
Ordinate_Resolution: 0.004096

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

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: baseflow
Entity_Type_Definition: Attribute table

Attribute:

Attribute_Label: WRIA

Attribute_Definition: Water Resource Inventory Area number

Attribute_Definition_Source: USGS

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 62

Attribute:

Attribute_Label: COUNTY

Attribute_Definition: Name of county where the point is located

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 62

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: STATION_NO

Attribute_Definition: USGS station number

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 59
Attribute_Units_of_Measure: minutes

Attribute:

Attribute_Label: LAT_DEGS

Attribute_Definition: Site latitude in degrees

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 59
Attribute_Units_of_Measure: seconds

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 59

Attribute:

Attribute_Label: LAT_MINS

Attribute_Definition: Site longitude in minutes

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 117
Range_Domain_Maximum: 125
Attribute_Units_of_Measure: degrees

Attribute:

Attribute_Label: LAT_SECS

Attribute_Definition: Site longitude in seconds

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 59
Attribute_Units_of_Measure: minutes

Attribute:

Attribute_Label: HUC
Attribute_Definition: Hydrologic Unit Code

Attribute:

Attribute_Label: LONG_DEGS

Attribute_Definition: Site longitude in degrees

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 59

Attribute:

Attribute_Label: LONG_MINS
Attribute_Definition: Site longitude in minutes

Attribute:

Attribute_Label: LONG_SECS
Attribute_Definition: Site longitude in seconds

Attribute:

Attribute_Label: REGULATION

Attribute_Definition: Degree of streamflow regulation

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: None

Enumerated_Domain:

Enumerated_Domain_Value: Low

Enumerated_Domain:

Enumerated_Domain_Value: Moderate

Enumerated_Domain:

Enumerated_Domain_Value: High

Attribute:

Attribute_Label: REG_TYPE

Attribute_Definition: Type of streamflow regulation

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: A
Enumerated_Domain_Value_Definition:: Flow effected by diversions for aquaculture/fish hatchery operations

Enumerated_Domain:

Enumerated_Domain_Value: D
Enumerated_Domain_Value_Definition:: Flow effected by domestic, municipal, or industrial water diversions

Enumerated_Domain:

Enumerated_Domain_Value: F
Enumerated_Domain_Value_Definition:: Flow effected by reservior retention and release for flood control

Enumerated_Domain:

Enumerated_Domain_Value: H
Enumerated_Domain_Value_Definition: Flow effected by hydropower diversion/generation

Enumerated_Domain:

Enumerated_Domain_Value: I
Enumerated_Domain_Value_Definition: Flow effected by irrigation withdrawals

Enumerated_Domain:

Enumerated_Domain_Value: L
Enumerated_Domain_Value_Definition: Low flows supplemented by reservoir releases

Enumerated_Domain:

Enumerated_Domain_Value: M
Enumerated_Domain_Value_Definition:: Flow seasonally affected by significant snowmelt or glacial-melt water

Enumerated_Domain:

Enumerated_Domain_Value: N
Enumerated_Domain_Value_Definition:: Flow effected by natural regulation such as lake storage, snowmelt, or other effects

Enumerated_Domain:

Enumerated_Domain_Value: O
Enumerated_Domain_Value_Definition:: Flow know to be effected by nonspecific causes (small impoundments, check dams, ground water pumpage, etc.)

Enumerated_Domain:

Enumerated_Domain_Value: R
Enumerated_Domain_Value_Definition:: Flow effected by reservoir releases. The inital date of regulation is indicated if known. For mulitple reservoir systems, the indicated data is for the first reservoir constructed.

Enumerated_Domain:

Enumerated_Domain_Value: S
Enumerated_Domain_Value_Definition:: Stream flow supplemented by well discharge, interbasin transfer, or industrial/municipal discharges.

Enumerated_Domain:

Enumerated_Domain_Value: U
Enumerated_Domain_Value_Definition: Natural flow effected by urbanization

Enumerated_Domain:

Enumerated_Domain_Value: *
Enumerated_Domain_Value_Definition:: "Present" (as used to describe the station period of record) refers to stream gages that were active as of 1997

Attribute:

Attribute_Label: SITE_NAME
Attribute_Definition: USGS station name
Attribute_Domain_Values:

Attribute:

Attribute_Label: MAP_ID
Attribute_Definition: Map ID designated on Plate 1 of study report
Attribute_Domain_Values:

Attribute:

Attribute_Label: DRAINAGE_A
Attribute_Definition: Watershed drainage area above stream gage (mi2)

Attribute:

Attribute_Label: PERIOD_OF_
Attribute_Definition: Period of data record

Attribute:

Attribute_Label: YEARS_OF_D
Attribute_Definition: Years of data record

Detailed_Description:

Entity_Type:

Entity_Type_Label: BASEFLOW.STATS
Entity_Type_Definition:: Annual summary statistics table for baseflow and streamflow for the station period of record.

Attribute:

Attribute_Label: MAX_7D_CFS
Attribute_Definition: Maximum of annual means - 7 day lowflow (ft3/sec)

Attribute:

Attribute_Label: MAX_BF%SF

Attribute_Definition: Maximum of annual means - baseflow (as % of total streamflow)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MAX_BF_CFS

Attribute_Definition: Maximum of annual means - baseflow (ft3/sec)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MAX_BF_IN

Attribute_Definition: Maximum of annual means - baseflow (in)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MAX_SF_CFS
Attribute_Definition: Maximum of annual means - streamflow (ft3/sec)

Attribute:

Attribute_Label: MAXBFCFSMI2
Attribute_Definition: Maximum of annual means - baseflow (ft3/sec/mi2)

Attribute:

Attribute_Label: MED_7D_CFS
Attribute_Definition: Median of annual means - 7 day lowflow (ft3/sec)

Attribute:

Attribute_Label: MED_BF%SF

Attribute_Definition: Median of annual means - baseflow (as % of total streamflow)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MED_BF_CFS

Attribute_Definition: Median of annual means - baseflow (ft3/sec)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MED_BF_IN

Attribute_Definition: Median of annual means - baseflow (in)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MED_SF_CFS
Attribute_Definition: Median of annual means - streamflow (ft3/sec)

Attribute:

Attribute_Label: MEDBFCFSMI2

Attribute_Definition: Median of annual means - baseflow (ft3/sec/mi2)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MIN_7D_CFS
Attribute_Definition: Minimum of annual means - 7 day lowflow (ft3/sec)

Attribute:

Attribute_Label: MIN_BF%SF

Attribute_Definition: Minimum of annual means - baseflow (as % of total streamflow)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MIN_BF_CFS

Attribute_Definition: Minimum of annual means - baseflow (ft3/sec)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MIN_BF_IN

Attribute_Definition: Minimum of annual means - baseflow (in)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MIN_SF_CFS
Attribute_Definition: Minimum of annual means - streamflow (ft3/sec)

Attribute:

Attribute_Label: MINBFCFSMI2

Attribute_Definition: Minimum of annual means - baseflow (ft3/sec/mi2)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: STATION_NO
Attribute_Definition: USGS station number
Attribute_Definition_Source: USGS

Attribute:

Detailed_Description:

Entity_Type:

Entity_Type_Label: BASEFLOW.MONTH
Entity_Type_Definition:: Monthly summary statistics for baseflow and streamflow for the station period of record

Attribute:

Attribute_Label: DRNAREAMI2
Attribute_Definition: Watershed drainage area above stream gage in square miles

Attribute:

Attribute_Label: MEANBF_CFS

Attribute_Definition: Mean baseflow (ft3/sec)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MEANBF_IN

Attribute_Definition: Mean baseflow (in)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MEANSF_CFS
Attribute_Definition: Mean streamflow (ft3/sec)

Attribute:

Attribute_Label: MEANSF_IN
Attribute_Definition: Mean streamflow (in)

Attribute:

Attribute_Label: MEANSRO_IN

Attribute_Definition: Mean surface runoff (in)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MN_BF%SF

Attribute_Definition: Mean baseflow as a percent of total streamflow

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MN_SRO_CFS

Attribute_Definition: Mean surface runoff (ft3/sec)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MNBFCFSMI2

Attribute_Definition: Mean baseflow (ft3/sec/mi2)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -1
Enumerated_Domain_Value_Definition: Value not computed

Attribute:

Attribute_Label: MONTH
Attribute_Definition: Month

Attribute:

Attribute_Label: STATION_NM
Attribute_Definition: Station name

Attribute:

Attribute_Label: STATION_NO
Attribute_Definition: USGS station number
Attribute_Definition_Source: USGS

Attribute:

Attribute_Label: WTRYRMNTH
Attribute_Definition: Water year month

Attribute:

Detailed_Description:

Entity_Type:

Entity_Type_Label: BASEFLOW.ANNUAL
Entity_Type_Definition: Annual baseflow and streamflow statistic by water year

Attribute:

Attribute_Label: 7-DMIN_CFS
Attribute_Definition: Annual mean 7 day lowflow (ft3/sec)

Attribute:

Attribute_Label: MEANBF_CFS
Attribute_Definition: Annual mean baseflow (ft3/sec)

Attribute:

Attribute_Label: MEANBF_IN
Attribute_Definition: Annual mean baseflow (in)

Attribute:

Attribute_Label: MN_BF%SF
Attribute_Definition: Annual mean baseflow (as a percent of total streamflow)

Attribute:

Attribute_Label: MN_SF_CFS
Attribute_Definition: Annual mean streamflow (ft3/sec)

Attribute:

Attribute_Label: MN_SRO_CFS
Attribute_Definition: Annual mean surface runoff (ft3/sec)

Attribute:

Attribute_Label: MNBFCFSMI2
Attribute_Definition: Annual mean baseflow (ft3/sec/mi2)

Attribute:

Attribute_Label: STATION_NM
Attribute_Definition: Station name

Attribute:

Attribute_Label: STATION_NO
Attribute_Definition: USGS station number
Attribute_Definition_Source: USGS

Attribute:

Attribute_Label: WATER_YR
Attribute_Definition: Water year

Attribute:

Overview_Description:

Entity_and_Attribute_Overview:: ARC/INFO point attribute table (PAT), and related statistics tables

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Washington State Department of Ecology
Contact_Person: Rich Kim

Contact_Position: Spatial Database Administrator

Contact_Address:

Address_Type: mailing address
Address: P.O. Box 47600
City: Olympia
State_or_Province: Washington
Postal_Code: 98504-7600
Country: United States of America

Contact_Address:

Address_Type: physical address
Address: 300 Desmond Drive
City: Olympia
State_or_Province: Washington
Postal_Code: 98503-1274
Country: United States of America

Contact_Voice_Telephone: (360) 407-6121

Contact_Facsimile_Telephone: (360) 407-6397

Contact_Electronic_Mail_Address: rich.kim@ecy.wa.gov

Hours_of_Service: 0800-1700 (Pacific)

Resource_Description: ArcGIS data layer

Distribution_Liability:

The Washington State Department of Ecology provides these geographic data "AS IS" WITHOUT A WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR USE, AND/OR NON-INFRINGEMENT.

Standard_Order_Process: