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DirectWatershed

FGDC XML
Identification Information
Citation Information
Originator Maine Department of Human Services (MEDHS), Drinking Water Program (MEDWP)
Publication Date 20111230
Title DirectWatershed
Geospatial Data Presentation Form vector digital data
Series Name Source Water Protection Area (SWPA)
Issue Identification Public Water Supply
Publication Place Augusta ME
Publisher Maine Department of Human Services, Drinking Water Program
Other Citation Details 24000
Online Linkage http://www.maine.gov/megis/catalog/
Abstract DIRECTWATERSHED depicts watershed areas of surface waters that are active sources of Maine public water supplies, depicted at 1:24000 scale. For river systems, the watershed is arbitrarily truncated .5 mile (0.8 kilometers) upstream of the intake. For lake systems, the direct watershed is truncated at the first order bifurcation of each tributary stream. Watershed delineations for some public water supply surface waters were based on new delineations verified by field work. Data, from the Maine GIS dataset MEDRDVD were used to represent watershed boundaries where these provided the best known representation. When available, the local knowledge of the water supplier was used to adjust the boundaries. Some watersheds are not in active use by public water systems, but are held in reserve for future growth or emergencies. TINGIS, an attribute table, can be joined to this dataset to determine active water supplies.
Purpose DIRECTWATERSHED watersheds were extracted and modified from other watershed data to facilitate conduct of the source water assessment program. Its primary purpose is to assist in management of spatial nformation 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 locational data. Field verification of location, ownership, and other attributes is strongly recommended
Time Period of Content
Calendar Date 20111230
Time of Day unknown
Currentness Reference ground condition
Status
Progress In work
Maintenance and Update Frequency As needed
Bounding Coordinates
West Bounding Coordinate -70.8882
East Bounding Coordinate -67.00473
North Bounding Coordinate 47.35437
South Bounding Coordinate 43.15988
Keywords
Theme health, public water supply, watersheds, HEALTH AND SAFETY (Maine GIS Thesaurus-Theme)
Theme inlandWaters, health (ISO 19115 Topic Category)
Place Maine (Maine GIS Thesaurus-Place)
Stratum human dimensions, hydrosphere (Maine GIS Thesaurus-Stratum)
Access Constraints These data are freely available for use; however, the data set should not be redistributed without permission. Any secondary distribution must have this documentation appended.
Use Constraints 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 most recent copy of both data and metadata from the Maine GIS Data Catalog.
Contact Organization (MEDWP) Maine Department of Human Services, Drinking Water Program
Contact Person Andrews Tolman
Contact Position Manager Source Water Protection
Address Type mailing address
Address State House Station 11
City Augusta
State or Province ME
Postal Code 04333-0011
Country USA
Contact Voice Telephone (207) 287-6196
Data Set Credit Dataset developed by Maine CDC Drinking Water Program, with logistical and financial support from US EPA and MEGIS.
Native Data Set Environment Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.4000
Citation Information
Originator Maine Department of Human Services (MEDHS), Drinking Water Program (MEDWP)
Publication Date 200210
Publication Time Unknown
Title wells
Geospatial Data Presentation Form vector digital data
Series Name Maine GIS Data Catalog; Maine GIS SDE Server
Issue Identification Source Water Protection Area (SWPA) Public Water Supply
Publication Place Augusta ME
Publisher Maine Office of Geographic Information Systems (MEGIS)
Other Citation Details 24000 WELLS contains point locations for Maine's over 2500 wells and springs serving public water supplies.
Online Linkage http://megis.maine.gov/catalog/
Citation Information
Originator Maine Department of Human Services (MEDHS), Drinking Water Program (MEDWP)
Publication Date 200210
Title wellsbuf
Geospatial Data Presentation Form vector digital data
Series Name Maine GIS Data Catalog; Maine GIS SDE Server
Issue Identification Source Water Protection Area (SWPA) Public Water Supply
Publication Place Augusta ME
Publisher Maine Office of Geographic Information Systems (MEGIS)
Other Citation Details 24000 Circular buffers for wells ranging from 300 to 2,500 feet in radius, based on the population served by the system. 1000 foot buffers for surface water intakes. These buffers are used for systems where there is no model developed. In coverage format REGIONS must be used to preserve the spatial and attribute relationships between wells, intakes and buffers where features overlap.
Online Linkage http://megis.maine.gov/catalog/
Attribute Accuracy Report 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 also be used seasonally, and may not be active. Supplies may go off-line, or be abandoned and the DWP may not be informed of their change in status.
Attribute Accuracy Value good
Attribute Accuracy Explanation Most attribute data is correct, but there are some data entry errors, and some information is based on owner's recollection, or may not be current.
Logical Consistency Report Spatial topology meets "Data Standards for Maine Geographic Information Systems", June 2002.
Completeness Report The data set is complete.
Horizontal Positional Accuracy Report Approximate horizontal accuracy is 12 meters, assuming source data meets National Map Accuracy Standards.
Citation Information
Originator Maine Department of Human Services (MEDHS), Drinking Water Program (MEDWP)
Publication Date unpublished material
Publication Time Unknown
Title (MEDWPGPS) Maine Drinking Water Program GPS, 1991-2003
Geospatial Data Presentation Form 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.
Source Scale Denominator 24000
Type of Source Media computer program
Beginning Date 1991
Beginning Time unknown
Ending Date 2003
Ending Time unknown
Source Currentness Reference ground condition
Source Citation Abbreviation MEDWPGPS
Citation Information
Originator Maine Office of Geographic Information Systems (MEGIS)
Publication Date 19940101
Publication Time Unknown
Title medrdvd
Geospatial Data Presentation Form vector digital data
Series Name Maine GIS Data Catalog; Maine GIS SDE Server
Publication Place Augusta ME
Publisher Maine Office of Geographic Information Systems
Other Citation Details 24000
Online Linkage http://megis.maine.gov/catalog/
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 19480101
Beginning Time Unknown
Ending Date 19901231
Ending Time Unknown
Source Currentness Reference source dates
Source Citation Abbreviation medrdvd
Citation Information
Originator U.S. Geological Survey (USGS), Maine Office of Geographic Information Systems (MEGIS) (comp., ed.)
Publication Date 19970101
Publication Time Unknown
Title rivers
Geospatial Data Presentation Form vector digital data
Series Name Maine GIS Data Catalog; Maine GIS SDE Server
Publication Place Augusta ME
Publisher Maine Office of Geographic Information Systems (MEGIS)
Other Citation Details 24000
Online Linkage http://megis.maine.gov/catalog/
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 19480101
Beginning Time Unknown
Ending Date 19991231
Ending Time Unknown
Source Currentness Reference source dates
Source Citation Abbreviation rivers
Citation Information
Originator U.S. Geological Survey (USGS), Maine Office of Geographic Information Systems (MEGIS) (comp., ed.)
Publication Date 19970101
Publication Time Unknown
Title ponds
Geospatial Data Presentation Form vector digital data
Series Name Maine GIS Data Catalog; Maine GIS SDE Server
Publication Place Augusta ME
Publisher Maine Office of Geographic Information Systems (MEGIS)
Other Citation Details 24000
Online Linkage http://megis.maine.gov/catalog/
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 19480101
Beginning Time Unknown
Ending Date 19991231
Ending Time Unknown
Source Currentness Reference source dates
Source Citation Abbreviation ponds
Citation Information
Originator U.S. Geological Survey (USGS), Maine Office of Geographic Information Systems (MEGIS) (comp., ed.)
Publication Date 19970101
Publication Time Unknown
Title streams
Geospatial Data Presentation Form vector digital data
Series Name Maine GIS Data Catalog; Maine GIS SDE Server
Publication Place Augusta ME
Publisher Maine Office of Geographic Information Systems (MEGIS)
Other Citation Details 24000
Online Linkage http://megis.maine.gov/catalog/
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 19480101
Beginning Time Unknown
Ending Date 19991231
Ending Time Unknown
Source Currentness Reference source dates
Source Citation Abbreviation streams
Process Description In DIRECTWATERSHED some watersheds for Maine public water supplies are based on new delineations and verified by field work. For others, data from the Maine GIS dataset MEDRDVD were used to represent watershed boundaries where these provided the best known representation. When available, the local knowledge of the water supplier was used to adjust the boundaries. For river systems, the watershed is arbitrarily truncated .5 mile (0.8 kilometers) upstream of the intake. For lake systems, the direct watershed is truncated at the first order bifurcation of each tributary stream. Data was originally processed in ArcView in UTM NAD27, and then re-projected to NAD83.
Source Used Citation Abbreviation MEDWPGPS
Source Used Citation Abbreviation medrdvd
Source Used Citation Abbreviation rivers
Source Used Citation Abbreviation ponds
Source Used Citation Abbreviation streams
Process Date 200306
Contact Organization (MEDWP) Maine Department of Human Services, Drinking Water Program
Contact Person Andrews Tolman
Contact Position Manager Source Water Protection
Address Type mailing address
Address State House Station 11
City Augusta
State or Province ME
Postal Code 04333-0010
Country USA
Contact Voice Telephone (207) 287-6196
Process Description In June, 2008, the dataset was edited to remove watersheds no longer utilized for public supply and to remove relict fields from the parent attribute table. Linking fields PWSID and UNIQUEID were added.
Process Date 200806
Contact Person Andrews L. Tolman
Contact Organization Maine CDC DWP
Contact Position Assistant Director
Contact Voice Telephone 207-287-6196
Contact Electronic Mail Address andrews.l.tolman@maine.gov
Cloud Cover 0
Direct Spatial Reference Method Vector
SDTS Point and Vector Object Type G-polygon
Point and Vector Object Count 0
Grid Coordinate System Name Universal Transverse Mercator
UTM Zone Number 19
Scale Factor at Central Meridian 0.999600
Longitude of Central Meridian -69.000000
Latitude of Projection Origin 0.000000
False Easting 500000.000000
False Northing 0.000000
Planar Coordinate Encoding Method 
Abscissa Resolution 0.001024
Ordinate Resolution 0.001024
Planar Distance Units m
Horizontal Datum Name North American Datum of 1983
Ellipsoid Name Geodetic Reference System 80
Semi-major Axis 6378137
Denominator of Flattening Ratio 298.257
Altitude Resolution 1.000000
Altitude Encoding Method Explicit elevation coordinate included with horizontal coordinates
Entity Type Label DIRECTWATERSHED.PAT
Entity Type Definition polygon attribute table
Entity Type Definition Source Environmental Systems Research Institute, Inc. (ESRI)
Attribute Label UNIQUEID
Attribute Definition PWSID expressed as a number
Attribute Definition Source DWP
Unrepresentable Domain Sequential unique whole numbers that are automatically generated.
Beginning Date of Attribute Values 
Attribute Label OBJECTID
Attribute Definition Internal feature number.
Attribute Definition Source ESRI
Unrepresentable Domain Sequential unique whole numbers that are automatically generated.
Beginning Date of Attribute Values 
Attribute Label ACRES
Attribute Definition area of source in acres
Attribute Definition Source Maine DWP
Unrepresentable Domain Sequential unique whole numbers that are automatically generated.
Beginning Date of Attribute Values 
Attribute Label HUC
Attribute Definition 8 digit Hydrologic Unit Code
Attribute Definition Source U.S. Geological Survey (USGS)
Unrepresentable Domain Coordinates defining the features.
Beginning Date of Attribute Values 
Attribute Label SHAPE
Attribute Definition feature geometry (SDE format)
Attribute Definition Source ArcSDE
Unrepresentable Domain Sequential unique whole numbers that are automatically generated.
Beginning Date of Attribute Values 
Attribute Label S_NAME
Attribute Definition name of the surface water body serving as a public water supply source
Attribute Definition Source Maine DWP
Unrepresentable Domain Coordinates defining the features.
Beginning Date of Attribute Values 
Attribute Label Shape
Attribute Definition Feature geometry.
Attribute Definition Source ESRI
Unrepresentable Domain Coordinates defining the features.
Beginning Date of Attribute Values 
Attribute Label PWSID
Attribute Definition a concatenation of the PWS identification number with the source identification number
Attribute Definition Source DWP
Unrepresentable Domain Positive real numbers that are automatically generated.
Beginning Date of Attribute Values 
Attribute Label Shape.len
Beginning Date of Attribute Values 
Entity and Attribute Overview The Maine Drinking Water Program maintains extensive database of information on each surface water body that serves as a public water supply. DIRECTWATERSHED has been attributed to provide general reference information related to the unique identifier for each public water supply, USGS hydrologic unit code, surface water body name, and acreage with the items HUC, S_NAME, and ACRES. The PWSID and UNIQUEID fields provide links to DWP data in the TINGIS table located in the OGIS SDE database. TINGIS includes data on current use (activity) of the public water system associated with this source. Some watersheds are not in current use.
Entity and Attribute Overview The Maine Drinking Water Program maintains extensive database of information on each surface water body that serves as a public water supply. DIRECTWATERSHED has been attributed to provide general reference information related to the unique identifier for each public water supply, USGS hydrologic unit code, surface water body name, and acreage with the items HUC, S_NAME, and ACRES. The PWSID and UNIQUEID fields provide links to DWP data in the TINGIS table located in the OGIS SDE database. TINGIS includes data on current use (activity) of the public water system associated with this source. Some watersheds are not in current use.
Contact Organization (MEGIS) Maine Office of Geographic Information Systems
Address Type mailing address
Address State House Station 174
City Augusta
State or Province ME
Postal Code 04333
Country USA
Contact Voice Telephone (207) 624-7700
Contact Facsimile Telephone 207-287-3842
Hours of Service Monday through Friday 0800 - 1700 EST
Resource Description Downloadable Data
Distribution Liability 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, are liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets.
Format Name ESRI Shapefile
Format Version Number ARC Version 9.x
Format Specification ArcView Shapefile Format
Format Name ARCSDE
Format Version Number ArcSDE 9.x
[accinstr]  Please contact the Maine Office of GIS (MEGIS) for access instructions.
Online Computer and Operating System 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
Fees Data may be downloaded from Maine GIS Data Catalog at no charge.
Turnaround Data is available for immediate download from the Maine GIS Data Catalog.
Metadata Reference Information
Metadata Date 20020318
Metadata Review Date 20111230
Metadata Contact
Contact Organization (MEDWP) Maine Department of Human Services, Drinking Water Program
Contact Person Andrews Tolman
Contact Position Manager Source Water Protection
Address Type mailing address
Address State House Station 11
City Augusta
State or Province ME
Postal Code 04333-0010
Country USA
Contact Voice Telephone (207) 287-6196
Metadata Standard Name FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version FGDC-STD-001-1998
Metadata Time Convention local time
Metadata Access Constraints none
Metadata Use Constraints Please confirm that you are using the most recent copy of both data and metadata from the Maine GIS Data Catalog.
Online Linkage http://www.esri.com/metadata/esriprof80.html
Profile Name ESRI Metadata Profile
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