Highest Groundwater Recharge Potential Areas, Susquehanna River Basin, 2022

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Distributor 1
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:Susquehanna River Basin Commission

Publication_Date:20231001

Title:

Highest Groundwater Recharge Potential Areas, Susquehanna River Basin, 2022

Geospatial_Data_Presentation_Form:vector digital data

Description:

Abstract:

Different geologic materials, structures, and land uses all influence the rate in which water can recharge underlying aquifers. This dataset combines factors influencing recharge through standardization and weighting assignments using the Multi-Criteria Decision Analysis (MCDA)-GIS framework to identify land-surface areas that have the potential to provide a large fraction of recharge. Percent impervious cover, land surface slope, percent sand and clay, depth to bedrock, drainage density, karst density, and fault density are used to describe recharge potential within the Susquehanna River Basin (basin). Many of these data layers are used to predict baseflow via regional regression equations in ungaged locations throughout the Mid-Atlantic region; baseflow is often used as an approximation of recharge. Input criteria were prioritized using the Analytic Hierarchy Process (AHP), which is an additive weighting model that can be combined with MCDA. Three general “first-level factors” were identified based on three primary zones of infiltration or recharge; those include the land surface, shallow-subsurface (soil) geology, and structural/bedrock geology. Weighting assignments of input datasets are presented in the table below. WeightFirst-Level FactorsWeightSecond-Level Factors40Land Cover / Terrain25Percent Impervious15Land Surface Slope20Shallow-Subsurface Geology15Percent Sand2.5Percent Clay2.5Depth to Bedrock40Structural / Bedrock Geology25Drainage Density10Karst Density5Fault DensityThe resulting raster dataset describes recharge potential as an index from 100-500, with 100 illustrating areas of least recharge potential and 500 illustrating areas of highest recharge potential. This polygon feature class represents all land surface areas that have corresponding pixel values within the 5th (or highest) quantile recharge class. Verification of these areas via desktop methods is described in detail in the study report available on the Commission's website at https://www.srbc.net/our-work/reports-library/Areas of high recharge potential may potentially overlie open water in features such as in rivers, streams, lakes, or reservoirs. Open water locations may be suitable for recharge, however some input datasets may not be applicable and/or complete for these areas. We combined “waterbody” features from the National Hydrography Dataset (USGS, 1999) and areas classified as “open water” in the National Land Cover Database (USGS, 2019) to comprehensively describe surface waters in the Basin. High recharge potential areas overlying surface waters are denoted by “Yes-Water” in the “High_Pot” attribute field. Reclassification of input datasets, and dataset sources are described in the "Lineage" section of the metadata. 

Purpose:

This polygon feature class illustrates areas with high recharge potential in the Susquehanna River Basin. The dataset represents all land surface areas that have corresponding pixel values within the 5th (or highest) quantile recharge class from the "Recharge_Potential" raster dataset, also available at the Pennsylvania Spatial Data Access (PASDA) potal.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date:20230921

Currentness_Reference:

Dataset complete

Status:

Progress:Complete

Maintenance_and_Update_Frequency:As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate:-78.981354

East_Bounding_Coordinate:-74.562192

North_Bounding_Coordinate:43.000641

South_Bounding_Coordinate:39.525932

Keywords:

Theme:

Theme_Keyword_Thesaurus:None

Theme_Keyword:Groundwater

Theme_Keyword:Aquifer

Theme_Keyword:Recharge

Theme_Keyword:Baseflow

Theme:

Theme_Keyword_Thesaurus:ISO 19115 Topic Categories

Theme_Keyword:environment

Theme_Keyword:geoscientificInformation

Theme_Keyword:inlandWaters

Place:

Place_Keyword_Thesaurus:None

Place_Keyword:Susquehanna River Basin

Place_Keyword:Pennsylvania

Place_Keyword:New York

Place_Keyword:Maryland

Access_Constraints:No access constraints, dataset is available for public use.

Use_Constraints:

The Originator, Publisher, and Distributor exclude any and all express or implied warranties and make no warranty or representation with respect to the data files or accompanying documentation, including quality, performance, merchantability or fitness for a particular purpose. These data files and documentation are provided "as is" and the User assumes the entire risk as to their quality and performance. These data are not to be redistributed for commercial profit. Reproduction or redistribution of this digital dataset without permission of the Originator/Publisher is expressly forbidden. The Originator and Publisher should be clearly cited in any product derived from this data. Any modifications to this data must be described in any digital or hardcopy product derived from this data. The SRBC assumes no legal liability for the accuracy or completeness of the data for any use. In no event shall the SRBC have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:Susquehanna River Basin Commission

Contact_Person:Pierre MaCoy, P.G.

Contact_Position:Hydrogeologist

Contact_Address:

Address_Type:mailing and physical

Address:

4423 North Front Street

City:Harrisburg

State_or_Province:PA

Postal_Code:17110-1788

Country:US

Contact_Voice_Telephone:717-238-0423

Contact_Electronic_Mail_Address:pmacoy@srbc.gov

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:Susquehanna River Basin Commission

Contact_Person:Graham Markowitz, P.G.

Contact_Position:Hydrologist

Contact_Address:

Address_Type:mailing and physical

Address:

4423 North Front Street

City:Harrisburg

State_or_Province:PA

Postal_Code:17110-1788

Country:US

Contact_Voice_Telephone:717-238-0423

Contact_Electronic_Mail_Address:gmarkowitz@srbc.gov

Data_Set_Credit:

Pierre MaCoy, P.G. and Graham Markowitz, P.G., 2023. Identifying Optimal Groundwater Recharge Locations and Critical Aquifer Recharge Areas within the Susquehanna River Basin. Susquehanna River Basin Commission. 4423 North Front Street. Harrisburg, PA 17110.

Native_Data_Set_Environment:

Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362

Data_Quality_Information:

Lineage:

Process_Step:

Process_Description:

Reclassified rasters where subjected to Weighted Overlay Tool analysis based on the following breakdown:

WEIGHT FOR  ANALYSIS
25 Impervious Area
15 Land Surface Slope
15 Percent Sand
2.5 Percent Clay
2.5 Depth to Bedrock
25 Drainage Density
10 Karst Density
5 Fault Density

Numbers indicate the percentage of weight for a total of 100% using an evaluation scale of 1 to 5 by 1
weights were chosen based on numerous iterations and are described in the report

Process_Date:20220902

Process_Step:

Process_Description:

Resultant raster was classified into quintiles.  The upper quintile (top 20%) was exported as a shapefile and dissolved into a multi-feature polygon.

Process_Date:20220902

Process_Step:

Process_Description:

Waterbody features from the National Hydrography Dataset (USGS, 1999) and areas classified as “open water” in the National Land Cover Database (USGS, 2019) were unioned with high recharge potential areas.  Overlapping areas were assigned a value of "Yes-Water" to allow filtering for additional analysis and display purposes.  Waterbody/water areas not overlapping were deleted.

Process_Date:20230922

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:SRBC

Contact_Person:Jeff Zimmerman, Jr.

Contact_Position:GIS Developer

Contact_Address:

Address_Type:mailing and physical

Address:

4423 North Front Street

City:Harrisburg

State_or_Province:PA

Postal_Code:17110-1788

Country:US

Contact_Voice_Telephone:717-238-0432

Contact_Facsimile_Telephone:717-238-2436

Contact_Electronic_Mail_Address:jzimmerman@srbc.net

Hours_of_Service:M - F, 8 AM to 4 PM

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:19889

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name:NAD 1983 Albers

Albers_Conical_Equal_Area:

NAD 1983 Albers

Standard_Parallel:40.0

Standard_Parallel:43.0

Longitude_of_Central_Meridian:-77.0

Latitude_of_Projection_Origin:39.0

False_Easting:0.0

False_Northing:0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method:coordinate pair

Coordinate_Representation:

Abscissa_Resolution:0.0001

Ordinate_Resolution:0.0001

Planar_Distance_Units:meter

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:High_Poten

Attribute:

Attribute_Label:OBJECTID

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:SQMI

Attribute_Definition:

High recharge potential area in square miles

Attribute_Definition_Source:

SRBC

Attribute:

Attribute_Label:Shape_Leng

Attribute:

Attribute_Label:HIGH_POT

Attribute_Definition:

High recharge potential areas

Attribute_Definition_Source:

SRBC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value:Yes

Enumerated_Domain_Value_Definition:

High Recharge Potential Area

Enumerated_Domain_Value_Definition_Source:

SRBC

Enumerated_Domain:

Enumerated_Domain_Value:Yes-Water

Enumerated_Domain_Value_Definition:

High Recharge Potential Area overlapped by NHD 24k waterbodies and/or NLCD, 2019 water

Enumerated_Domain_Value_Definition_Source:

SRBC

Attribute:

Attribute_Label:Shape_Length

Attribute_Definition:

Length of feature in internal units.

Attribute_Definition_Source:

Esri

Attribute_Domain_Values:

Unrepresentable_Domain:

Positive real numbers that are automatically generated.

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.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:SRBC

Contact_Person:Brydon H. Lidle, III

Contact_Position:Manager, Information Technology

Contact_Address:

Address_Type:mailing and physical

Address:

4423 North Front Street

City:Harrisburg

State_or_Province:PA

Postal_Code:17110-1788

Country:US

Contact_Voice_Telephone:717-238-0425

Contact_Facsimile_Telephone:717-238-2436

Contact_Electronic_Mail_Address:blidle@srbc.gov

Hours_of_Service:8 AM to 4 PM, M - F

Distribution_Liability:

Use of map for any purpose on “as is” basis, no warranties provided.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:Pennsylvania Spatial Data Access (PASDA)

Contact_Address:

Address_Type:mailing and physical address

Address:

115 Land and Water building

City:University Park

State_or_Province:Pennsylvania

Postal_Code:16802

Country:United States

Contact_Voice_Telephone:(814) 865 - 8792

Contact_Electronic_Mail_Address:pasda@psu.edu

Distribution_Liability:

The USER shall indemnify, save harmless, and, if requested, defend those parties involved with the development and distribution of this data, their officers, agents, and employees from and against any suits, claims, or actions for injury, death, or property damage arising out of the use of or any defect in the FILES or any accompanying documentation. Those parties involved with the development and distribution excluded any and all implied warranties, including warranties or merchantability and fitness for a particular purpose and makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation

Metadata_Reference_Information:

Metadata_Date:20231127

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:Susquehanna River Basin Commission

Contact_Person:Pierre MaCoy

Contact_Position:Hydrogeologist

Contact_Address:

Address_Type:unknown

Address:

4423 North Front Street

City:Harrisburg

State_or_Province:PA

Postal_Code:17110-1788

Country:US

Contact_Voice_Telephone:717-238-0423

Contact_Electronic_Mail_Address:pmacoy@srbc.gov

Metadata_Standard_Name:FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version:FGDC-STD-001-1998

Metadata_Time_Convention:local time

Metadata_Access_Constraints:There are no access constraints for this metadata document.

Metadata_Use_Constraints:

There are no use constraints for this metadata document.