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Tags
fisheries, marine biology, marine environment monitoring, commodities, biota, economy, environment, oceans
To show point locations of herring weirs based on 1990 overflight by MDMR Marine Patrol.
WEIR90 shows point locations of herring weirs in Maine based on 1990 overflight by MDMR Marine Patrol, mapped at an approximate scale of 1:100,000. Data were screen digitized from paper maps used during the overflight.
Credit should always be given to the data source and/or originator when the data is transferred or printed.
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 | -68.685600 | East | -66.962113 |
| North | 45.136278 | South | 44.031803 |
| Maximum (zoomed in) | 1:5,000 |
| Minimum (zoomed out) | 1:150,000,000 |
Credit should always be given to the data source and/or originator when the data is transferred or printed.
Monday through Friday
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
Monday through Friday
point feature class
Environmental Systems Research Institute, Inc. (ESRI)
Internal feature number.
ESRI
address of permit holder
name of permit holder
user defined
phone number of permit holder
user defined
item not used at this time
user defined
item not used at this time
user defined
item not used at this time
user defined
Feature geometry.
ESRI
Monday through Friday
WEIR90 shows point locations of herring weirs in Maine based on 1990 overflight by MDMR Marine Patrol, mapped at an approximate scale of 1:100,000. Data were screen digitized from paper maps used during the overflight.
To show point locations of herring weirs based on 1990 overflight by MDMR Marine Patrol.
publication date
none
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
Credit should always be given to the data source and/or originator when the data is transferred or printed.
Attribute accuracy is tested by manual comparison of the source with hard copy printouts and/or symbolized display of digital files. Please report errors to Maine Office of GIS.
Point topology exists. Data set meets Data Standards for Maine Geographic Information Systems. All points have a single unique user-id number.
Data set is complete.
Positional accuracy of coverage is unknown, probably best used at 1:100,000 scale or less.
Positional accuracy of coverage is unknown, probably best used at 1:100,000 scale or less.
Not applicable
WEIR90 contains point locations of herring weirs based on 1990 overflight by John Fetterman of MDMR Marine Patrol. Data were screen digitized from paper maps used during the overflight.
WEIR90 contains point locations of herring weirs based on 1990 overflight by John Fetterman of MDMR Marine Patrol. Data were screen digitized from paper maps used during the overflight.
WEIR90 contains point locations of herring weirs based on 1990 overflight by John Fetterman of MDMR Marine Patrol. Data were screen digitized from paper maps used during the overflight.
The Maine Office of GIS completed the conversion of all final data layers from NAD27 to NAD83 in July 1999. All the data layers were converted using the ArcInfo (version 7.2.1) NADCON conversion and the "project" command. All data was copied to double precision, projected to NAD83, and then copied back to single precision. It was decided to keep the NAD27 quad structure instead of generating new quad boundaries from NAD83 coordinates - all indexes (quads) were projected to NAD83 by using the same process previously described. All MEGIS data libraries in ArcInfo Librarian were repopulated using the NAD83 indexes and data.
Metadata imported.
Dataset copied.
WEIR90 contains point locations of herring weirs based on 1990 overflight by John Fetterman of MDMR Marine Patrol. Attributes include the items NAME, ADDRESS and PHONE for permit holder information where available. The items SEASON and TYPE are not used at this time.
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.
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.
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 .
Users must assume responsibility to determine the usability of this data for their purposes.
Please contact the Maine Office of GIS (MEGIS) for access instructions.