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Wells

SDE Feature Class

Tags
planningCadastre, human dimensions, hydrosphere, public water supply, Maine, utilitiesCommunication, infrastructure, environment, structure, United States, inlandWaters, health, wells


Summary

This dataset was developed for use by the MEDWP and other entities. Its primary purpose is to assist in management of spatial information about PWSs, in compliance with the federal Safe Drinking Water Act as Amended 1996 and 22 MRSA Chapter 601. Detailed design decisions may require additional location data. Field verification of location, ownership, and other attributes is strongly recommended. The dataset was developed by the Maine Department of Human Services, Drinking Water Program, with logistical and financial support from U.S. Environmental Protection Agency (USEPA).

Description

WELLS consists of point data, each representing the location of a public water supply well in Maine. The records are current as of June 2003, to the best of Maine Drinking Water Program (MEDWP) recorded knowledge. Data was collected by differentially corrected GPS from 1994 to 2003 and includes public water supply (PWS) wells statewide. Additional source data is available on tables that can be linked to this base data.

Credits

Dataset developed by Maine Drinking Water Program, with logistical and financial support from USEPA. Credit should always be given to the data source and/or originator when the data is transferred or printed.

Use limitations

Detailed design decisions may require additional locational data. Field verification of location, ownership, and other attributes is strongly recommended. Users must assume responsibility in determining the usability of this data for their purposes. Digital maps retain the accuracy of their source materials. The best use of data mapped at scales of 1:500,000 and 1:250,000 is in statewide planning and studies; at 1:100,000 in regional planning and studies; at 1:62,500 and 1:24,000 in detailed studies and local planning; and at 1:12,000 and 1:5,000 or larger scales in parcel level studies and detailed local planning. In the use of Maine GIS data, please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the correct copy of both data and metadata from the Maine GIS Data Catalog. Updates, corrections, and feedback, incorporated in the Maine GIS database are made in accordance with "Data Standards for Maine Geographic Information Systems", 2002, and coordinated by MEGIS

Extent

West  -71.133979    East  -66.898738
North  47.357670    South  42.981539

Scale Range
Maximum (zoomed in)  1:5,000
Minimum (zoomed out)  1:50,000

ArcGIS Metadata 

Topics and Keywords 

Themes or categories of the resource  structure, planningCadastre, environment, inlandWaters, health, utilitiesCommunication


*Content type  Downloadable Data


Place keywords  Maine, United States

Thesaurus
Title Maine GIS Thesaurus-Place




Stratum keywords  human dimensions, hydrosphere

Thesaurus
Title GCMD Parameter Keyword




Theme keywords  public water supply, infrastructure, wells

Thesaurus
Title Maine GIS Thesaurus-Theme




Theme keywords  planningCadastre, utilitiesCommunication, environment, structure, inlandWaters, health

Thesaurus
Title ISO Keyword Thesaurus




Citation 

*Title GISVIEW.MEDWP.Wells
Publication date 2004-04-01
Indeterminate time unknown


Presentation formats  digital map
FGDC geospatial presentation format  vector digital data


Series
Name Source Water Protection Area (SWPA)
Issue Maine Public Water Supply

Other citation details 1:24000 WELLS contains point locations for Maine's over 2500 wells and springs serving public water supplies.


Citation Contacts 

Responsible party
Organization's name (MEDHHSDWP) Maine Department of Health and Human Services, Drinking Water Program
Contact's position Manager Source Water Protection
Contact's role  originator


Contact information
Phone
Voice (207) 287-6196

Address
Type postal
Delivery point State House Station 11
City Augusta
Administrative area ME
Postal code 04333-0010
Country US



Resource Details 

Dataset languages  English (UNITED STATES)


Status  under development
Spatial representation type  vector


*Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.1.3143


Credits
Dataset developed by Maine Drinking Water Program, with logistical and financial support from USEPA. Credit should always be given to the data source and/or originator when the data is transferred or printed.
ArcGIS item properties
*Name GISVIEW.MEDWP.Wells
*Location Server=sql-gisview-prod.som.w2k.state.me.us; Service=sde:sqlserver:sql-gisview-prod.som.w2k.state.me.us,1633; Database=GISVIEW; User=megis; Version=dbo.DEFAULT
*Access protocol ArcSDE Connection

Extents 

Extent
Description
ground condition
Temporal extent
Beginning date 1991-01-01
Indeterminate time unknown
Ending date 2003-10-01
Indeterminate time unknown

Extent
Geographic extent
Bounding rectangle
West longitude -70.96842
East longitude -66.89888
South latitude 42.98513
North latitude 47.33493

Extent
Geographic extent
Bounding rectangle
Extent type  Extent used for searching
*West longitude -71.133979
*East longitude -66.898738
*North latitude 47.357670
*South latitude 42.981539
*Extent contains the resource Yes

Extent in the item's coordinate system
*West longitude 338791.392200
*East longitude 658735.360500
*South latitude 4760661.499600
*North latitude 5244911.959200
*Extent contains the resource Yes

Resource Points of Contact 

Point of contact
Organization's name (MEDHHSDWP) Maine Department of Health and Human Services, Drinking Water Program
Contact's position Manager Source Water Protection
Contact's role  point of contact


Contact information
Phone
Voice (207) 287-6196

Address
Type postal
Delivery point State House Station 11
City Augusta
Administrative area ME
Postal code 04333-0010
Country US



Resource Maintenance 

Resource maintenance
Update frequency  as needed


Resource Constraints 

Legal constraints
Limitations of use
Users must assume responsibility to determine the usability of this data for their purposes. Although these data have been processed successfully on a computer system at the Maine Office of Geographic Information Systems, no warranty expressed or implied is made by MEGIS regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. Neither the Maine Office of Geographic Information Systems, nor any of its contributors, is liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets.
Limitations of use
Users must assume responsibility to determine the usability of this data for their purposes.
Constraints
Limitations of use
Detailed design decisions may require additional locational data. Field verification of location, ownership, and other attributes is strongly recommended. Users must assume responsibility in determining the usability of this data for their purposes. Digital maps retain the accuracy of their source materials. The best use of data mapped at scales of 1:500,000 and 1:250,000 is in statewide planning and studies; at 1:100,000 in regional planning and studies; at 1:62,500 and 1:24,000 in detailed studies and local planning; and at 1:12,000 and 1:5,000 or larger scales in parcel level studies and detailed local planning. In the use of Maine GIS data, please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the correct copy of both data and metadata from the Maine GIS Data Catalog. Updates, corrections, and feedback, incorporated in the Maine GIS database are made in accordance with "Data Standards for Maine Geographic Information Systems", 2002, and coordinated by MEGIS

Spatial Reference 

ArcGIS coordinate system
*Type Projected
*Geographic coordinate reference GCS_North_American_1983
*Projection NAD_1983_UTM_Zone_19N
*Coordinate reference details
Projected coordinate system
Well-known identifier 26919
X origin -5120900
Y origin -9998100
XY scale 10000
Z origin 0
Z scale 1
M origin 0
M scale 1
XY tolerance 0.001
Z tolerance 2
M tolerance 2
High precision true
Latest well-known identifier 26919
Well-known text PROJCS["NAD_1983_UTM_Zone_19N",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-69.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",26919]]

Reference system identifier
*Value 26919
*Codespace EPSG
*Version 7.11.2


Spatial Data Properties 

Vector
*Level of topology for this dataset  geometry only


Geometric objects
Feature class name GISVIEW.MEDWP.Wells
*Object type  point
*Object count 3323



ArcGIS Feature Class Properties
Feature class name GISVIEW.MEDWP.Wells
*Feature type Simple
*Geometry type Point
*Has topology FALSE
*Feature count 3323
*Spatial index TRUE
*Linear referencing FALSE



Data Quality 

Scope of quality information
Resource level  dataset




Data quality report - Conceptual consistency
Measure description Data set meets "Data Standards for Maine Geographic Information Systems" (June 2002).




Data quality report - Completeness omission
Measure description The data set is complete.




Data quality report - Quantitative attribute accuracy
Measure description Attribute data are extracted from the State Drinking Water Information System (SIDWIS). Although this information is updated and checked for quality purposes on a regular basis, there are errors in the data. Supplies may be used seasonally, and may not be active. Supplies may go off-line, or be abandoned and the MEDWP may not be informed of their change in status. Additionally, the ownership of some PWSs changes over time, and should be checked for currency.


Quantitative test results
Value good


Evaluation method Most attribute data is correct, but there are some data entry errors. Some information is based on owner's recollection, or may not be current.




Data quality report - Absolute external positional accuracy
Dimension horizontal


Measure description GPS data were differentially corrected using Trimble base station data. Accuracy of the well locations which were collected by GPS can range from 1 cm to over 100 meters depending on the number of satellites in view, the position of satellites in relation to each other, the strengths of the satellite signals and the distance of the base station from the GPS receiver. Geoexplorers typically provide accuracy ranges of 2 to 5 meters.


Quantitative test results
Value 5


Evaluation method GPS data for well locations were differentially corrected using Trimble base station data. Parameters set for MEDHHS GPS collection Geoexplorers typically provide accuracy ranges of 2 to 5 meters.




Lineage 

Process step
When the process occurred 2002-08-30
Description The point data for public water supply wells and surface water intakes was located statewide using the Global Positioning System. There are 3 types of public water systems in Maine: Transient Systems (restaurants, boys and girls camps, campgrounds, motels, bottled water companies, etc.); Community Systems (utilities, mobile home parks, nursing homes, etc.); and Non-transient, non-community (NTNC) Systems (schools, offices, factories, etc.). All three types are included in this dataset. GPS data are collected for new sources on a continuing basis and added to the coverage periodically. GPS data are differentially corrected using Trimble base station information. GPS for many intake locations were collected from the shore and corrected for distance from shore.


Process contact
Organization's name (MEDHHSDWP) Maine Department of Health and Human Services, Drinking Water Program
Contact's position Manager Source Water Protection
Contact's role  processor


Contact information
Phone
Voice (207) 287-6196

Address
Type postal
Delivery point State House Station 11
City Augusta
Administrative area ME
Postal code 04333-0010
Country US



Source data
Relationship to the process step used


Source citation
Alternate titles  medwpgps








Process step
When the process occurred 2003-06-01
Description Data for surface water intakes was updated with results of Maine Drinking Water Program field work.




Process step
When the process occurred 2003-06-01
Description Data for public water supply wells and intakes previously two separate data layers were recompiled for use in SDE format and to serve the Maine Drinking Water Programs IMS application.


Process contact
Organization's name (MEDHHSDWP) Maine Department of Health and Human Services, Drinking Water Program
Contact's position Manager Source Water Protection
Contact's role  processor


Contact information
Phone
Voice (207) 287-6196

Address
Type postal
Delivery point State House Station 11
City Augusta
Administrative area ME
Postal code 04333-0010
Country US





Process step
When the process occurred 2004-04-26
Description Surface water intakes have been deleted from the Maine GIS Data Catalog distribution copy of this dataset, at the originator request.


Process contact
Individual's name GIS Coordinator
Organization's name (MEGIS) Maine Office of Geographic Information Systems
Contact's position GIS Coordinator
Contact's role  processor


Contact information
Phone
Voice 207 624-7700
Fax 207 287-3842

Address
Type postal
Delivery point State House Station 174
City Augusta
Administrative area ME
Postal code 04333-0174
Country US

Hours of service Monday through Friday 0800 - 1700 EST




Source data
Source medium name  online link
Resolution of the source data
Scale denominator 24000

Source citation
Title (MEDWPGPS) Maine Drinking Water Program GPS, 1991-2003
Alternate titles  medwpgps
Publication date
Indeterminate date inapplicable
Indeterminate time unknown


Presentation formats  digital document
FGDC geospatial presentation format  tabular digital data


Other citation details Locations in 1996-2003 were collected using Trimble Geoexplorer Global Positioning System (GPS) receivers. Locations in 1991 and 1995 were collected using Trimble Pathfinder GPS Receivers. GPS is a satellite-based positioning system operated and maintained by the U.S. Department of Defense. It consists of 24 NAVSTAR satellites that orbit the earth every twelve hours at an altitude of approximately 12,600 miles, as well as ground-based monitor and upload stations, which track and monitor the satellite orbits, and a master control station. GPS receivers use the signals sent by the satellites to determine where the satellites are and then use this information to calculate the user's position on the earth. Accuracy can range from 1 cm to over 100 meters depending on the number of satellites in view, the position of satellites in relation to each other, the strengths of the satellite signals and the distance of the base station from the GPS receiver. Geoexplorers typically provide accuracy ranges of 2 to 5 meters. Locations have been mapped using the North American Datum 27 (NAD27) later converted to NAD83 in Universal Transverse Mercator (UTM) coordinate system.


Responsible party
Organization's name Maine Department of Human Services (MEDHS), Drinking Water Program (MEDWP)
Contact's role  originator




Extent of the source data
Description
ground condition
Temporal extent
Beginning date 1991-01-01
Indeterminate time unknown
Ending date 2003-01-01
Indeterminate time unknown



Distribution 

Distributor
Contact information
Individual's name GIS Coordinator
Organization's name (MEGIS) Maine Office of Geographic Information Systems
Contact's position GIS Coordinator
Contact's role  distributor


Contact information
Phone
Voice 207 624-7700
Fax 207 287-3842

Address
Type postal
Delivery point State House Station 174
City Augusta
Administrative area ME
Postal code 04333-0174
Country US

Hours of service Monday through Friday 0800 - 1700 EST


Available format
Name ESRI Shapefile
Version ARC Version 9.x
Specification ArcView Shapefile Format
File decompression technique Data available from this website is in .zip compressed format. WinZip is a Windows based, PKZip-compatible compression utility. You will need a program like this to extract the data. A link to a trial copy WinZip software is available at http://megis.maine.gov/links/.
Format information content MEGIS has made all vector layers, in the Maine GIS Internet Data Catalog, available in ESRI's ArcView shapefile format. A shapefile is a simple non-topological format that stores the geometry and attribute information for a set of geographic features as a set of vector (point, line, polygon) coordinates. Shapefiles draw quickly and directly in ArcView, ArcGIS, ArcExplorer. Shapefiles are a compatible data type for many other types of GIS software. Three files are fundamental to each shapefile: .shp stores the feature geometry (shape and location information); .shx stores the index of the feature geometry; .dbf a dBASE (TM) file stores the attribute information for the features. Other index files may be created to help speed analysis and query: these file formats are .sbn .sbx .ain .aix .fbn and .fbx. In addition you may find projection .prj, and metadata .xml, files associated with shapefiles.


Ordering process
Terms and fees Data may be downloaded from Maine GIS Internet Data Catalog at no charge.
Turnaround time Data is available for immediate download from the Maine GIS Internet Data Catalog.

Transfer options
Online source
Locationhttp://megis.maine.gov/catalog/
Description  These data are available to Internet browsers for download from the Maine GIS Internet Data Catalog - http://megis.maine.gov/catalog/ Data available from this website is in .zip compressed format. WinZip is a Windows based, PKZip-compatible compression utility. You will need a program like this to extract the data. A link to a trial copy WinZip software is available at http://megis.maine.gov/links/ If you are not already a GIS user, free software for viewing these files is available from Environmental Systems Research Institute, Inc. (ESRI) - www.esri.com See http://megis.maine.gov/links/ for a link to ArcExplorer 9.x .



Distributor
Contact information
Organization's name Maine Office of Geographic Information Systems
Contact's position GIS Coordinator
Contact's role  distributor


Contact information
Phone
Voice (207) 624-7700
Fax (207) 287-3842

Address
Type postal
Delivery point State House Station 174
City Augusta
Administrative area ME
Postal code 04333-0174
Country US

Hours of service Monday through Friday 0800 - 1700 EST


Available format
Name ARCSDE
Version ArcSDE 9.x
Format information content Oracle 9i


Ordering process
Terms and fees Access is available through Maine's wide area network; WAN users may contact the Maine Office of Information Technology, Maine Office of Geographic Information Systems (MEGIS) for a login.



Distribution format
*Name SDE Feature Class


Transfer options
Online source
Locationhttp://megis.maine.gov/catalog/

Fields 

Details for object GISVIEW.MEDWP.Wells 
*Type Feature Class
*Row count 3323
Definition
point feature class
Definition source
Environmental Systems Research Institute, Inc. (ESRI)


Field OBJECTID
 
*Alias OBJECTID
*Data type OID
*Width 4
*Precision 10
*Scale 0
*Field description
Internal feature number.
*Description source
Esri
*Description of values Sequential unique whole numbers that are automatically generated.




Field PWSID
 
*Alias PWSID
*Data type String
*Width 12
*Precision 0
*Scale 0
Field description
PWS_SOUR_ID a unique identifier for each public water supply well in Maine
Description source
Maine Drinking Water Program


Field FACID
 
*Alias FACID
*Data type String
*Width 254
*Precision 0
*Scale 0




Field SRC_TYPE
 
*Alias SRC_TYPE
*Data type String
*Width 254
*Precision 0
*Scale 0




Field FMSRC
 
*Alias FMSRC
*Data type String
*Width 12
*Precision 0
*Scale 0




Field FMSRCDAT
 
*Alias FMSRCDAT
*Data type Date
*Width 36
*Precision 0
*Scale 0




Field FMSRCORG
 
*Alias FMSRCORG
*Data type String
*Width 12
*Precision 0
*Scale 0




Field FMPROCSS
 
*Alias FMPROCSS
*Data type String
*Width 12
*Precision 0
*Scale 0




Field FMUPDORG
 
*Alias FMUPDORG
*Data type String
*Width 12
*Precision 0
*Scale 0




Field FMUPDDAT
 
*Alias FMUPDDAT
*Data type Date
*Width 36
*Precision 0
*Scale 0




Field FMNOTE
 
*Alias FMNOTE
*Data type String
*Width 25
*Precision 0
*Scale 0




Field GlobalID
 
*Alias GlobalID
*Data type GlobalID
*Width 38
*Precision 0
*Scale 0




Field Shape
 
*Alias Shape
*Data type Geometry
*Width 4
*Precision 0
*Scale 0
*Field description
Feature geometry.
*Description source
Esri
*Description of values Coordinates defining the features.






Overview Description
Entity and Attribute Overview The Maine Drinking Water Program maintains extensive database of information on each public water supply well. This dataset has been attributed to provide general reference information in the items TYPE, RADIUS on type of public water system or feature, RADIUS of wellhead or surface water intake protection area proportional to type of system or feature depicted and BUFFER_ID for related buffer. The item PWSID, can be used to relate to existing, or build additional, detailed database information. There are three types of public water systems in Maine: Transient Systems (restaurants, boys and girls camps, campgrounds, motels, bottled water companies, etc.); Community Systems (utilities, mobile home parks, nursing homes, etc.); and Non-transient, Non-Community (NTNC) Systems (schools, offices, factories, etc.). All three types are included in this dataset.


Entity and Attribute Detail Citation The ArcView shapefile and ArcGIS geodatabase formats, commonly used for Maine GIS data, carry default identifiers and attributes that are software generated and/or important for internal recordkeeping. These are listed here to avoid repetition for every layer, and may not be repeated in the attribute descriptions and definitions of each layer. Common software generated identifiers and attributes in Maine GIS data include: FID (feature identifier), Shape (feature geometry), OBJECTID and SHAPE_lengt. In addition, most GIS formats will carry fields for PERIMETER, AREA and/or LENGTH according to feature geometry. These fields are typically available by default, with the units based on coordinate system or projection units of GIS data. Most GIS software packages also provide a means to calculate these values. It is important to test any columns containing PERIMETER, AREA or LENGTH values before using them for analysis purposes. These important values can be carried from format to format and become out-dated. Verify that the values are correct. Also, in your GIS software, please view the properties of data layers for the map units used to calculate these fields, and for the units set for display purposes.




Metadata Details 

Metadata language English (UNITED STATES)
Metadata character set  utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata  dataset
Scope name* dataset


*Last update 2013-11-19


ArcGIS metadata properties
Metadata format ArcGIS 1.0
Standard or profile used to edit metadata FGDC


Created in ArcGIS for the item 2011-12-15 15:03:33
Last modified in ArcGIS for the item 2013-11-19 14:48:18


Automatic updates
Have been performed Yes
Last update 2013-11-19 14:45:41


Metadata Contacts 

Metadata contact
Organization's name (MEDHHSDWP) Maine Department of Health and Human Services, Drinking Water Program
Contact's position Manager Source Water Protection
Contact's role  point of contact


Contact information
Phone
Voice (207) 287-6196

Address
Type postal
Delivery point State House Station 11
City Augusta
Administrative area ME
Postal code 04333-0010
Country US



Metadata Maintenance 

Maintenance
Update frequency  unknown


Other maintenance requirements Last metadata review date: 20100120


Thumbnail and Enclosures 

FGDC Metadata (read-only) 

Entities and Attributes 

Detailed Description
Entity Type
Entity Type LabelGISVIEW.MEDWP.Wells
Entity Type Definition
point feature class
Entity Type Definition SourceEnvironmental Systems Research Institute, Inc. (ESRI)

Attribute
Attribute LabelOBJECTID
Attribute Definition
Internal feature number.
Attribute Definition SourceEsri
Attribute Domain Values
Unrepresentable Domain
Sequential unique whole numbers that are automatically generated.

Attribute
Attribute LabelPWSID
Attribute Definition
PWS_SOUR_ID a unique identifier for each public water supply well in Maine
Attribute Definition SourceMaine Drinking Water Program

Attribute
Attribute LabelFACID

Attribute
Attribute LabelSRC_TYPE

Attribute
Attribute LabelFMSRC

Attribute
Attribute LabelFMSRCDAT

Attribute
Attribute LabelFMSRCORG

Attribute
Attribute LabelFMPROCSS

Attribute
Attribute LabelFMUPDORG

Attribute
Attribute LabelFMUPDDAT

Attribute
Attribute LabelFMNOTE

Attribute
Attribute LabelGlobalID

Attribute
Attribute LabelShape
Attribute Definition
Feature geometry.
Attribute Definition SourceEsri
Attribute Domain Values
Unrepresentable Domain
Coordinates defining the features.

Overview Description
Entity and Attribute Overview
                            The Maine Drinking Water Program maintains extensive database of information on each public water supply well. This dataset has been attributed to provide general reference information in the items TYPE, RADIUS on type of public water system or feature, RADIUS of wellhead or surface water intake protection area proportional to type of system or feature depicted and BUFFER_ID for related buffer. The item PWSID, can be used to relate to existing, or build additional, detailed database information. There are three types of public water systems in Maine: Transient Systems (restaurants, boys and girls camps, campgrounds, motels, bottled water companies, etc.); Community Systems (utilities, mobile home parks, nursing homes, etc.); and Non-transient, Non-Community (NTNC) Systems (schools, offices, factories, etc.). All three types are included in this dataset.
                          
Entity and Attribute Detail Citation
                            The ArcView shapefile and ArcGIS geodatabase formats, commonly used for Maine GIS data, carry default identifiers and attributes that are software generated and/or important for internal recordkeeping. These are listed here to avoid repetition for every layer, and may not be repeated in the attribute descriptions and definitions of each layer. Common software generated identifiers and attributes in Maine GIS data include: FID (feature identifier), Shape (feature geometry), OBJECTID and SHAPE_lengt. In addition, most GIS formats will carry fields for PERIMETER, AREA and/or LENGTH according to feature geometry. These fields are typically available by default, with the units based on coordinate system or projection units of GIS data. Most GIS software packages also provide a means to calculate these values. It is important to test any columns containing PERIMETER, AREA or LENGTH values before using them for analysis purposes. These important values can be carried from format to format and become out-dated. Verify that the values are correct. Also, in your GIS software, please view the properties of data layers for the map units used to calculate these fields, and for the units set for display purposes.