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National Wetland Inventory- (NWI) Digital Data

Product Overview 

Data Source and Accuracy

Coverage Index

Available Formats

Pricing

Individual 24k Maps

USA Prices

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Custom NWI GIS Maps

Pricing- Custom NWI Maps

Placing Orders

Overview- NWI Data

Through the National Wetlands Inventory, the USFWS has developed a series of topical maps to show wetlands and deepwater habitats. These maps have been used extensively to make resource management decisions at the federal, state and local government levels.  The goal of the National Wetlands Inventory is to provide current geospatially referenced information on the status, extent, characteristics and functions of wetland, riparian, deepwater and related aquatic habitats in priority areas to promote the understanding and conservation of these resources.

Data Source and Accuracy
The wetland maps are graphic representations of the type, size and location of the wetlands and deepwater habitats in the United States. These maps have been prepared from the analysis of high altitude imagery in conjunction with collateral data sources and field work. The maps represent reconnaissance level information on the location, type, size of wetlands habitats such that they are accurate at the nominal scale of the 1:24,000 base map and the 1:63,360 base map for Alaska. A margin of error is inherent in the use of imagery; thus, detailed on-the-ground inspection of any particular site, may result in revision of the wetland boundaries or classification established through image analysis.

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Map Coverage Indexes

US coverage (low res. 3.1 mb)

US coverage (hi res. 28.9 mb)

US coverage (ESRI Shapefile, 1.6 mb)

Alaska coverage (coming soon)

National Wetlands Inventory coverage
Available Formats

Digital Data Services, Inc. can translate NWI data into most CAD/GIS formats.  The following is a list of our common software packages that we support.

AutoDesk® Software

  • AutoCAD (.dwg)

  • Drawing Exchange File (.dxf)

ESRI® Software

  • ARC/INFO (Coverages, Shapefiles, GeoDatabase, etc.)

  • ArcCAD

  • ArcView

  • PC ARC/INFO

  • Interchange Files (.E00)

Other Common Formats
  • Geographix

  • Kingdom

  • Landmark

  • MapInfo®

  • Petra

  • Rockworks

  • Surfer (DXF)

  • MicroStation®

  • Intergraph®

Pricing 
Individual Maps- Price Includes Custom Projection of Data
ESRI .SHP FILE FORMAT (ArcMap) OTHER LISTED FORMATS
QNTY 1-20* QNTY > 20  QNTY 1-20* QNTY > 20 
$5.00 $4.75 $10.00 $9.50
Entire USA Bundle- Includes HI & AK:
ESRI .SHP  OTHER FORMAT
$450.00 $1,500.00
 
Custom NWI Maps

Digital Data Services, Inc. uses on-screen digitization processes to convert paper NWI maps into files that are ready to use by a CAD (Computer Aided Drafting/Design) or GIS (Geographic Information Systems) software applications. 

The result is a file that is correctly separated into layers and attributed.   If the map is to be integrated with existing data, the data is provided into the client specified map projection.  The conversion is "seamless" which means that we use your standards and conventions when creating the data.

DDS can act as consultants during the specification stage to assist in defining the optimum solution, then define a conversion process to economically complete the project. Our customer-focused approach to this business is built around two simple principles; on-time-delivery and a 100% quality guarantee.

Pricing Information- Custom NWI Maps

The following price ranges are estimates based on converting ALL wetland features (excluding the 7.5 minute map base) from a standard NWI map.

High complexity

$1,000 to $1,500 per map

Average complexity

$ 675 to $1,000 per map

Low complexity

$550 to $ 675 per map

Pricing depends on the complexity of the project. Please call or e-mail us to discuss your project or to prepare a price quotation. 

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Placing Orders 
Call toll-free 1-866-DDS-SCAN (337-7226), or e-mail us at info@usgsquads.com to place an order.  
 

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