Dominant Hydrologic Classes per 8 digit Hydrologic Unit Code (Summarized)

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Oak Ridge National Lab, Ryan McManamay
Publication_Date: 20130312
Publication_Time: 000000
Title:
Dominant Hydrologic Classes per 8 digit Hydrologic Unit Code (Summarized)
Edition: 1
Geospatial_Data_Presentation_Form: vector digital data
Other_Citation_Details:
McManamay, R.A., M.S. Bevelhimer, S-C. Kao, W. Yaxing, M. Martinez Gonzalez, N. Samu (2013), US Maps of Hydrologic Classes, Oak Ridge National Laboratory National Hydropower Asset Assessment Environmental Attribution, available at: <http://nhaap.ornl.gov/sites/default/files/data_repo/Environmental/Summarized_HUC08_HydrologicClass_v1.zip.>, accessed online: [Month, date, year.]
Online_Linkage:
<http://nhaap.ornl.gov/sites/default/files/data_repo/Environmental/Summarized_HUC08_HydrologicClass_v1.zip>
Description:
Abstract:
Maps of hydrologic classes per 8-digit Hydrologic Unit Code (HUC08) were created as apart of the DOE/ORNL instream flow project and NSD Resource Assessment (<http://nhaap.ornl.gov/nsd>). Descriptions of data are provided in McManamay, R.A., M.S. Bevelhimer, S. Kao. 2013. A New US Hydrologic Classification: A Tool to Stratify Analyses in Ecohydrology. Ecohydrology (in revew).Hydrologic classes were created using statistics calculated from discharge information from 2,618 (unregulated) USGS streamflow gages with reference, semi-disturbance, or pre-dam regulation data (USGS National Water Information Serve: <http://waterdata.usgs.gov/usa/nwis/si>). Hydrologic classes are groups of streams that share similar hydrologic properties, i.e. simliarity in streamflow characteristics, and may respond similarly to impoundment. Hydrologic classes provide a template to describe ecological patterns, generalize hydrologic responses to disturbance, and stratify research and management needs. Hydrologic classes were assigned to the 2,618 gages using clustering analysis. For the remaining gages (non-reference), predictive models using landscape and climate information were used to predict class membership. The 2,618 unregulated USGS stream gages were mapped in ARC GIS 9.3 by latitude/longitude coordinates. Theisen polygons [Analysis (Proximity) toolset] were created for each USGS, and each dominant and secondary hydrologic class was assigned to 8-digit Hydrologic units. In addition, the number of hydrologic classes represented within each 8-digit hydrologic unit was summarized. Class Names and Descriptions are provided below:Intermittent Flashy 1 = High intermittency, long high-flow duration; Mixed US distribution, mostly western (centralized to ND, SD). Late Timing Runoff = somewhat stable, later annual maximum (different reasons for late timing in various geographical areas - e.g. hurricanes (FL), rainfall (west). Coastal areas but very mixed (inland). Perennial Runoff 1 = higher variability, different timing; Southeast Piedmont and Uplands.Perennial Runoff 2 = higher baseflow, different timing than PR1; Northeast Piedmont and Uplands Super Stable Groundwater = very high baseflow, stable, probably occuring around spring-fed areas; Mixed US distribution.Stable High Baseflow = relatively high BF, stable, relatively high runoff; SE blue ridge mountainsIntermittent Flashy SW = High intermittency, long high-flow duration, short low-flow duration; SW California, AZ.Snowmelt 2 = slightly higher BF, different timing max flows and flow durations; Western Rockies, great lakes.Unpredictable Intermittent = Low predictability, somewhat flashy, later annual max than class PR2; Eastern USIntermittent Flashy 2 = High intermittency, late maximum; Mixed US distribution.Western Coastal Runoff = distinct wet/dry seasons, early maximum (altered timing); Western Coast (CA)Stable High Runoff = higher runoff, stable; Upper Western Coast (WA, OR)Harsh Intermittent = long periods of intermittency, and periods of episodic flows; SW US.Snowmelt 1 = slightly lower BF, different timing max flows and flow durations; Eastern RockiesGlacial High Runoff = predictable, minimum occurs in winter, long high-flow duration; high elevation areas (MT, WY) and artic (AK)
Purpose:
Hydrologic classes were created using statistics calculated from discharge information from 2,618 (unregulated) USGS streamflow gages with reference, semi-disturbance, or pre-dam regulation data (USGS National Water Information Serve: <http://waterdata.usgs.gov/usa/nwis/si>). Hydrologic classes are groups of streams that share similar hydrologic properties, i.e. simliarity in streamflow characteristics, and may respond similarly to impoundment. Hydrologic classes provide a template to describe ecological patterns, generalize hydrologic responses to disturbance, and stratify research and management needs. Hydrologic classes were assigned to the 2,618 gages using clustering analysis. For the remaining gages (non-reference), predictive models using landscape and climate information were used to predict class membership.
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -179.133426
East_Bounding_Coordinate: -64.566
North_Bounding_Coordinate: 71.398030
South_Bounding_Coordinate: 17.674930
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: environment
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword:
Environmental, NHAAP, NSD, Hydropower, Energy, HUC, NHDPlus, NED, WBD
Access_Constraints: None
Use_Constraints:
The distributor shall not be held liable for improper or incorrect use of this data, based on the description of appropriate/inappropriate uses described in this metadata document. It is strongly recommended that this data is directly acquired from the distributor and not indirectly through other sources which may have changed the data in some way. ORNL should be acknowledged using the citation above as the data source in products derived from these data. Data and methods are described by McManamay et al (2013) in dataset description above.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Oak Ridge National Lab
Contact_Person: Ryan McManamay
Contact_Electronic_Mail_Address: mcmanamayra@ornl.gov
Data_Set_Credit:
Funding and support for the Oak Ridge National Laboratory (ORNL) Instream Flow Project and New Stream-reach Development (NSD) Resource Assessment were provided by the Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) Water Power Program. Support from the U.S. Army Corps of Engineers (USACE), Bureau of Reclamation (Reclamation), U.S. Geological Survey (USGS), National Hydropower Association (NHA), and external reviewers are crucial and deeply appreciated.
Native_Data_Set_Environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.3.3600

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 2292

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 8.9831528411952133e-009
Longitude_Resolution: 8.9831528411952133e-009
Geographic_Coordinate_Units: Decimal Degrees
Geodetic_Model:
Horizontal_Datum_Name: D North American 1983
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Summarized_HUC08_HydrologicClass_v1
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: REGION
Attribute:
Attribute_Label: SUBREGION
Attribute_Definition: Name for each 4-digit Hydrologic Unit
Attribute_Definition_Source:
USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)
Attribute:
Attribute_Label: BASIN
Attribute_Definition: Name for each 6-digit Hydrologic Unit
Attribute_Definition_Source:
USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)
Attribute:
Attribute_Label: SUBBASIN
Attribute_Definition: Name for each 8-digit Hydrologic Unit
Attribute_Definition_Source:
USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)
Attribute:
Attribute_Label: HUC_2
Attribute_Definition: Identification Code for each 2-digit Hydrologic Unit
Attribute_Definition_Source:
USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)
Attribute:
Attribute_Label: HUC_4
Attribute_Definition: Identification Code for each 4-digit Hydrologic Unit
Attribute_Definition_Source:
USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)
Attribute:
Attribute_Label: HUC_6
Attribute_Definition: Identification Code for each 6-digit Hydrologic Unit
Attribute_Definition_Source:
USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)
Attribute:
Attribute_Label: HUC_8
Attribute_Definition: Identification Code for each 8-digit Hydrologic Unit
Attribute_Definition_Source:
USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)
Attribute:
Attribute_Label: ACRES
Attribute_Definition: Acreage per 8-digit Hydrologic Unit
Attribute_Definition_Source:
USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)
Attribute:
Attribute_Label: SQ_MILES
Attribute_Definition: Square miles per 8-digit Hydrologic Unit
Attribute_Definition_Source:
USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)
Attribute:
Attribute_Label: HU_8_STATE
Attribute_Definition: Dominant representative state per 8-digit Hydrologic Unit
Attribute_Definition_Source:
USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)
Attribute:
Attribute_Label: SHAPE_Leng
Attribute:
Attribute_Label: SHAPE_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: HYDROCDOM1
Attribute_Definition:
The dominant hydrologic class code represented within each 8-digit Hydrologic Unit. Hydrologic classes were created by McManamay et al. (2013) using discharge information from 2,618 USGS streamflow gages (USGS National Water Information Serve: <http://waterdata.usgs.gov/usa/nwis/si>). Hydrologic classes are groups of streams that share similar hydrologic properties, i.e. simliarity in streamflow characteristics, and may respond similarly to impoundment. Theisen polygons were created for each USGS, and each dominant hydrologic class was assigned to 8-digit Hydrologic units. For descriptions of hydrologic classes, see metadata description. For more information see: McManamay, R.A., M.S. Bevelhimer, S. Kao. 2013. A New US Hydrologic Classification: A Tool to Stratify Analyses in Ecohydrology. Ecohydrology (in revew).
Attribute_Definition_Source:
"ORNL Environmental Attribution Assessment ORNL Instream Flow Project USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)
Attribute:
Attribute_Label: HYDROSEC1
Attribute_Definition:
The secondary hydrologic class code represented within each 8-digit Hydrologic Unit. Hydrologic classes were created by McManamay et al. (2013) using discharge information from 2,618 USGS streamflow gages (USGS National Water Information Serve: <http://waterdata.usgs.gov/usa/nwis/si>). Hydrologic classes are groups of streams that share similar hydrologic properties, i.e. simliarity in streamflow characteristics, and may respond similarly to impoundment. Theisen polygons were created for each USGS, and each dominant hydrologic class was assigned to 8-digit Hydrologic units. For descriptions of hydrologic classes, see metadata description. For more information see: McManamay, R.A., M.S. Bevelhimer, S. Kao. 2013. A New US Hydrologic Classification: A Tool to Stratify Analyses in Ecohydrology. Ecohydrology (in revew).
Attribute_Definition_Source:
"ORNL Environmental Attribution Assessment ORNL Instream Flow Project USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)
Attribute:
Attribute_Label: HYDROCDOM
Attribute_Definition:
The dominant hydrologic class name represented within each 8-digit Hydrologic Unit. Hydrologic classes were created by McManamay et al. (2013) using discharge information from 2,618 USGS streamflow gages (USGS National Water Information Serve: <http://waterdata.usgs.gov/usa/nwis/si>). Hydrologic classes are groups of streams that share similar hydrologic properties, i.e. simliarity in streamflow characteristics, and may respond similarly to impoundment. Theisen polygons were created for each USGS, and each dominant hydrologic class was assigned to 8-digit Hydrologic units. For descriptions of hydrologic classes, see metadata description. For more information see: McManamay, R.A., M.S. Bevelhimer, S. Kao. 2013. A New US Hydrologic Classification: A Tool to Stratify Analyses in Ecohydrology. Ecohydrology (in revew).
Attribute_Definition_Source:
ORNL Environmental Attribution Assessment ORNL Instream Flow Project USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)
Attribute:
Attribute_Label: HYDROCSEC
Attribute_Definition:
The dominant hydrologic class name represented within each 8-digit Hydrologic Unit. Hydrologic classes were created by McManamay et al. (2013) using discharge information from 2,618 USGS streamflow gages (USGS National Water Information Serve: <http://waterdata.usgs.gov/usa/nwis/si>). Hydrologic classes are groups of streams that share similar hydrologic properties, i.e. simliarity in streamflow characteristics, and may respond similarly to impoundment. Theisen polygons were created for each USGS, and each dominant hydrologic class was assigned to 8-digit Hydrologic units. For descriptions of hydrologic classes, see metadata description. For more information see: McManamay, R.A., M.S. Bevelhimer, S. Kao. 2013. A New US Hydrologic Classification: A Tool to Stratify Analyses in Ecohydrology. Ecohydrology (in revew).
Attribute_Definition_Source:
ORNL Environmental Attribution Assessment ORNL Instream Flow Project USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)
Attribute:
Attribute_Label: NUMCLASS
Attribute_Definition:
The total number of hydrologic classes represented within each 8-digit Hydrologic Unit. Hydrologic classes were created by McManamay et al. (2013) using discharge information from 2,618 USGS streamflow gages (USGS National Water Information Serve: <http://waterdata.usgs.gov/usa/nwis/si>). Hydrologic classes are groups of streams that share similar hydrologic properties, i.e. simliarity in streamflow characteristics, and may respond similarly to impoundment. Theisen polygons were created for each USGS, and each dominant hydrologic class was assigned to 8-digit Hydrologic units. For descriptions of hydrologic classes, see metadata description. For more information see: McManamay, R.A., M.S. Bevelhimer, S. Kao. 2013. A New US Hydrologic Classification: A Tool to Stratify Analyses in Ecohydrology. Ecohydrology (in revew).
Attribute_Definition_Source:
ORNL Environmental Attribution Assessment ORNL Instream Flow Project USDA Natural Resource Conservation Service (<http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset/>)

Metadata_Reference_Information:
Metadata_Date: 20130312
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Oak Ridge National Lab
Contact_Person: Ryan McManamay
Contact_Address:
Address_Type: physical
State_or_Province: TN
Contact_Electronic_Mail_Address: bevelhimerms@ornl.gov
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time

Generated by mp version 2.9.6 on Thu Mar 28 15:30:08 2013