Gage Locations (GageLoc.shp) indexed to the NHDPlus Version 2.1 stream network

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: US Environmental Protection Agency

Originator: US Geological Survey

Publication_Date: 2015

Title:

Gage Locations (GageLoc.shp) indexed to the NHDPlus Version 2.1 stream network

Geospatial_Data_Presentation_Form: Vector Digital Data Set (Point)

Online_Linkage: nhdplus.com

Larger_Work_Citation:

Citation_Information:

Originator: US Environmental Protection Agency

Originator: US Geological Survey

Publication_Date: 2012

Title: National Hydrography Dataset Plus - NHDPlus

Edition: 2.1

Geospatial_Data_Presentation_Form: vector digital data, raster digital data, tabular digital data

Publication_Information:

Publication_Place: Washington, D.C.

Publisher: US Environmental Protection Agency

Online_Linkage: <http://www.epa.gov/waters>

Description:

Abstract:

The locations of approximately 26,000 current and historical U.S. Geological Survey (USGS) surface-water monitoring gaging stations have been indexed to the NHDPlus Version 2.1 stream network. Part of the USGS National Water Information System (NWIS), these gaging stations measure water flow and water levels in streams and lakes. The NHDPlus V2 stream network locations for these gaging stations differ from stations' latitude/longitude provided in NWIS. The NWIS coordinates are frequently not coincidenet with the NHDPlus stream network.

Purpose:

The purpose of this dataset is to provide the locations of USGS gaging stations indexed to the NHDPlus Version 2.1 linear stream network. Considerable review and revision has gone into the NHDPlus locations provided in this dataset. For each USGS gaging station, the station ID, and the NHDPlus Reachcode and Measure are provided. The ComID (common identifier) of the NHDFlowline feature of the gage location is also given. These linkages to the NHDPlus linear stream network enable the use of these gaging stations for a variety of hydrologic analysis applications. Examples include the development of regional or national statistical models of streamflow and water-quality.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2015

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -124.669539429

East_Bounding_Coordinate: -67.24700502

North_Bounding_Coordinate: 49.000036324

South_Bounding_Coordinate: 25.1671504785

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category

Theme_Keyword: NHDPlus

Theme_Keyword: Stream gaging stations

Theme_Keyword: NHD Events

Theme_Keyword: Hydrography

Theme_Keyword: inland Waters

Theme_Keyword: National Hydrogaphy Dataset

Theme_Keyword: NHD

Theme_Keyword: EPA

Theme_Keyword: USGS

Theme_Keyword: GEODATA

Theme_Keyword: National Water Information System

Theme_Keyword: NWIS

Theme_Keyword: water-resources data

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: United States of America

Place_Keyword: United States

Place_Keyword: USA

Place_Keyword: Alabama

Place_Keyword: Arizona

Place_Keyword: Arkansas

Place_Keyword: California

Place_Keyword: Colorado

Place_Keyword: Connecticut

Place_Keyword: Delaware

Place_Keyword: District of Columbia

Place_Keyword: Florida

Place_Keyword: Georgia

Place_Keyword: Idaho

Place_Keyword: Illinois

Place_Keyword: Indiana

Place_Keyword: Iowa

Place_Keyword: Kansas

Place_Keyword: Kentucky

Place_Keyword: Louisiana

Place_Keyword: Maine

Place_Keyword: Maryland

Place_Keyword: Massachusetts

Place_Keyword: Michigan

Place_Keyword: Minnesota

Place_Keyword: Mississippi

Place_Keyword: Missouri

Place_Keyword: Montana

Place_Keyword: Nebraska

Place_Keyword: Nevada

Place_Keyword: New Hampshire

Place_Keyword: New Jersey

Place_Keyword: New Mexico

Place_Keyword: New York

Place_Keyword: North Carolina

Place_Keyword: North Dakota

Place_Keyword: Ohio

Place_Keyword: Oklahoma

Place_Keyword: Oregon

Place_Keyword: Pennsylvania

Place_Keyword: Rhode Island

Place_Keyword: South Carolina

Place_Keyword: South Dakota

Place_Keyword: Tennessee

Place_Keyword: Texas

Place_Keyword: Utah

Place_Keyword: Vermont

Place_Keyword: Virginia

Place_Keyword: Washington

Place_Keyword: West Virginia

Place_Keyword: Wisconsin

Place_Keyword: Wyoming

Access_Constraints: None

Use_Constraints: None

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Environmental Protection Agency

Contact_Address:

Address_Type: Mailing

Address: see email address

City: Washington

State_or_Province: D.C.

Postal_Code: 20460

Contact_Voice_Telephone: see email address

Contact_Electronic_Mail_Address: NHDPlus@hscnet.com

Data_Set_Credit:

Acknowledgement of the originating agencies (USEPA and USGS) would be appreciated in products derived from these data.

Native_Data_Set_Environment:

Environment as of Metadata Creation: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.2 (Build 3552) Service Pack N/A (Build N/A)

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted.

Logical_Consistency_Report: No formal logical accuracy tests were conducted.

Completeness_Report:

Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Note: this dataset only includes gages that can be referenced to streams represented in the NHDPlus V2.1, NHD Flowline network.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

A formal accuracy assessment of the horizontal positional information in the data set has not been conducted. Indexed locations on the NHDPlus network have undergone varied levels of review among each USGS state water science center.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

A formal accuracy assessment of the vertical positional information in the data set has either not been conducted, or is not applicable.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: David W. Stewart, Alan Rea and David M. Wolock

Publication_Date: 200604

Title: USGS Streamgages Linked to the Medium Resolution NHD

Geospatial_Data_Presentation_Form: Raster Digital Data Set

Publication_Information:

Publication_Place: Reston, Va

Publisher: U.S. Geological Survey

Type_of_Source_Media: Digital and/or Hardcopy Resources

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2006

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: USGS Data Series DS-195

Source_Contribution:

The gage locations spatially referenced to the NHDPlusV1 flowlines

Source_Information:

Source_Citation:

Citation_Information:

Originator: David W. Stewart

Publication_Date: 201102

Title:

Written communication: 2,195 Updated or Additional Records for Source Titled "USGS Streamgages Linked to the Medium Resolution NHD"

Geospatial_Data_Presentation_Form: Vector Digital Data Set

Publication_Information:

Publication_Place: Reston, VA

Publisher: US Geological Survey

Type_of_Source_Media: Digital and/or Hardcopy Resources

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20100601

Source_Currentness_Reference: NWIS retrieval

Source_Citation_Abbreviation: Stewart, 2011, written communication

Source_Contribution:

The latitude and longitude coordinates of 2,195 gages were spatially referenced to the NHDPlusV1 flowlines. These locations were combined with DS-195

Process_Step:

Process_Description:

DS-195 gage locations and the additional/updated 2195 gage locations were indexed NHDPlusV1. This produced the Reachcode and Measure attributes from the NHDPlusV1 flowlines.

Process_Date: 2011

Process_Step:

Process_Description:

The gage locations with NHDPlusV1 Reachcodes and Measures were migrated to NHDPlusV2 stream network locations. The migration was performed as a three step process: (1) Gages which were located on Reachcodes that existed in both NHDPlusV1 and V2 were snapped to the same Reachcode in NHDPlusV2. (2) Of the remaining gages, Gages which were located on a stream name that existed in both NHDPlusV1 and V2 were snapped to the same named stream in NHDPlusV2. (3) The remaining gages were snapped to the nearest location in NHDPlusV2

Process_Date: 2012

Process_Step:

Process_Description:

Corrected indexed location for Station ID 05411400 - Sny Magill Creek near Clayton, IA (Hydro Region 07)

Process_Date: 20140625

Process_Step:

Process_Description:

Two gaging station locations (Station IDs 01184000 and 01183998) on the Connecticut River at Thompsonville, CT were corrected and reindexed to NHDPlus V2. Correct indexed locations verified by Jonathan Morrison at the US Geological Survey New England Water Science Center, Connecticut Office.

Process_Date: 20141124

Process_Step:

Process_Description:

Corrected several indexed locations in Hydro Regions 17 and 18, based on feedback from Dan Wise at the US Geological Survey Oregon Water Science Center . Two gage indexed locations not previously included in GageLoc.shp were added in Hydro Region 17. The updates are listed below:

Region 17
a) Station ID 13037500. Snake River gage was snapped to a nearby unintialized canal/ditch flowline. Moved to correct location on the NHD (Snake River near Heise, ID).
b) Station ID 13027500. Salt River gage was snapped to a nearby uninitialized canal/ditch flowline. Moved to correct location on the NHD (Salt River near Etna, WY).
c) Station ID 13302005 - Pahsimeroi River at Ellis, ID - Moved site to correct location.
d) Station ID 12452000 - Lake Chelan at Chelan, WA - Moved gage inside lake on art path parallel to shore where gage is located.
e) Station ID 12451200 - Lake Chelan at Purple Point, Stehekin, WA - Moved gage inside lake on art path parallel to shore where gage is located.
f) Station ID 12452500 - Chelan River at Chelan, WA - Moved gage to location on Chelan River just downstream of Lake Chelan.
Added 2 new gage locations in Region 17 gage loc event shapefile: Station ID 14140001 Bull Run River near Bull Run, OR and Station ID 13139510 Big Wood River at Hailey, ID TOTAL FLOW

REGION 18 edits
a) Station ID 11066460 - Santa Ana River at MWD Crossing, CA - Moved gage to correct location off previous snap to a nearby uninitialized pipeline to the Santa Ana River flowline on NHD.
b) Stations 11186000 and 11186001 - Kern River near Kenrnville (river onley), CA and Combined Flow of Kern River and Kern River NO 3, Canal. Moved gages off nearby unitialized pipeline to Kern River flowline.
c) Station 11298000 - South Fork Stanislaus River near L Barn, CA. Moved gage off nearby uniniatilized canal ditch onto the Stanislaus River NHD flowline ComID 343847.
d) Station 11297700 - Lyons Reservoir near Long Barn, CA - Moved Lake gage off nearby unitialized canal near outlet flowline within Lyons Reservoir.
e) Station 11443000- American River Flume near Camino, CA - Moved gage off South Fork American River flowline to nearby unitialized American River Flume feature.
f) Station ID 11443501 - South Fork American River near Camino + American River Flume, CA and Station ID 11443500 South Fork American River near Camino, CA. Moved these sites off nearby unitialized American River Flume to networked South Fork American River.
g) Station ID 11046000 Santa Margarita River at Ysidora, CA. Moved further upstream based on NWIS lat long coordinates.
h) Station ID 11022200 Los Coches C near Lakeside, CA - Moved to correct location on NHD.
I) Station ID 11075800 Santiago C at Modjeska, CA - Moved just upstream based on NWIS lat/long and USGS topo map gaging station label.
J) Station ID 11295300 North Fork StanisIaus River below Beaver Creek Near Hathaway Pines, CA - Corrected location. Previously, incorrectly snapped to Beaver Creek trib to Stanislaus River.
K) Station ID 11423800 Bear River F REL Below Camp Far West Reservoir Near Wheatland, CA. Moved to correct location. Was incorrectly snapped to nearby uninitialized flowline.

Process_Date: 20141230

Process_Step:

Process_Description:

Eleven indexed locations were corrected based on feedback from David Saad at the US Geological Survey, Wisconsin Water Science Center. Many of these sites had previously been indexed to nearby tributary streams incorrectly. Supporting documentation for edits included imagery, USGS topo maps, and site information from the USGS National Water Information System (NWIS). Station ID and Station names updates are listed below by NHDPlus Vector Processing Unit (VPU).

VPU04: Station ID 04115000, Maple River at Maple Rapids, MI
VPU05: Station ID 03220000, Mill Creek near Bellepoint OH
VPU05: Station ID 03298200, Floyds Fork near MT Washington, KY
VPU08: Station ID 07047950, Languille River at Palestine, AR
VPU10L: Station ID 06805500, Platte River at Louisville, NE
VPU10L: Station ID 06764000, South Platte River at Julesburg, CO
VPU10U: Station ID 06099500, Marias River near Shelby, MT
VPU10U: Station ID 06132000, Missouri River below Fort Peck Dam, MT
VPU10U: Station ID 06090300, Missouri River near Great Falls, MT
VPU 11: Station ID 07056515, Bear Creek near Silver Hill, AR
VPU 11: Station ID 07152500, Arkansas River at Ralston, OK

Process_Date: 20150407

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Point

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point

Point_and_Vector_Object_Count: 26108

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.0197607702

Longitude_Resolution: 0.0246539428

Geographic_Coordinate_Units: Decimal seconds

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: Attribute Table

Entity_Type_Definition:

Table containing attribute information associated with the data set.

Entity_Type_Definition_Source: Producer defined

Attribute:

Attribute_Label: COMID

Attribute_Definition: Unused

Attribute:

Attribute_Label: EVENTDATE

Attribute_Definition: Date event was created

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 12/4/2014

Range_Domain_Maximum: 4/7/2015

Attribute_Units_of_Measure: Date

Attribute:

Attribute_Label: REACHCODE

Attribute_Definition: NHDPlus linear Reachcode on which gaging station is located

Attribute_Definition_Source: NHDPlus V2.1

Attribute:

Attribute_Label: REACHSMDAT

Attribute_Definition: Reach Version Date

Attribute:

Attribute_Label: REACHRESOL

Attribute_Definition: Unknown

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Medium

Enumerated_Domain_Value_Definition: 1:100,000-scale NHDPlus

Attribute:

Attribute_Label: FEATURECOM

Attribute_Definition: Reserved for future use

Attribute:

Attribute_Label: FEATURECLA

Attribute_Definition: Reserved for future use

Attribute:

Attribute_Label: SOURCE_ORI

Attribute_Definition: Originator of Event

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: USGS, Water Resources Division

Enumerated_Domain_Value_Definition: Agency that indexed data

Attribute:

Attribute_Label: SOURCE_DAT

Attribute_Definition: Description of point entity

Attribute:

Attribute_Label: SOURCE_FEA

Attribute_Definition: Gage ID/USGS Site Number

Attribute_Definition_Source: USGS

Attribute:

Attribute_Label: FEATUREDET

Attribute_Definition: URL where detailed gage data can be found (NWISWEB)

Attribute:

Attribute_Label: Measure

Measure along the reach where gage is located in percent from downstream end of the features assigned to the same ReachCode

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 100

Attribute_Units_of_Measure: Percent

Attribute:

Attribute_Label: Offset

Attribute_Definition: Offset

Attribute_Definition_Source: Producer defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 0

Enumerated_Domain_Value_Definition: (always zero)

Attribute:

Attribute_Label: EventType

Attribute_Definition: Event Type

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: StreamGage

Enumerated_Domain_Value_Definition: Stream gaging station

Attribute:

Attribute_Label: FLComID

Attribute_Definition:

NHDPlusV21 NHD Flowline feature COMID on which the gage is located

Attribute_Definition_Source: NHDPlus v2.1

Overview_Description:

Entity_and_Attribute_Overview:

The entity and attribute information provided here describes the tabular data associated with the data set. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the data set.

Entity_and_Attribute_Detail_Citation:

The entity and attribute information was generated by the individual and/or agency identified as the originator of the data set. Please review the rest of the metadata record for additional details and information.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Environmental Protection Agency

Contact_Address:

Address_Type: Mailing

Address: see email address

City: Washington

State_or_Province: D.C.

Postal_Code: 20460

Contact_Voice_Telephone: see email address

Contact_Electronic_Mail_Address: NHDPlus@hscnet.com

Distribution_Liability: Distributor assumes no liability for misuse of data.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Vector Digital Data Set (Point)

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: nhdplus.com

Fees: None. No fees are applicable for obtaining the data set.

Metadata_Reference_Information:

Metadata_Date: 20150410

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: NHDPlus team

Contact_Organization: U.S. Environmental Protection Agency

Contact_Address:

Address_Type: Physical

Address: see email address

City: Washington

State_or_Province: DC

Postal_Code: 20460

Contact_Voice_Telephone: see email address

Contact_Electronic_Mail_Address: NHDPlus@hscnet.com

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time