The National Wetlands Inventory Program (NWI) has been producing wetland maps and geospatial wetland data for the United States since the mid-1970s. The focus on the program has been on two fronts: 1) map or digital database preparation and delivery to the public, and 2) projecting and reporting on national wetland trends using a probability-based sampling design.
| Author: U S Fish & Wildlife Service |
| Publisher: Createspace Independent Publishing Platform |
| Publication Date: Feb 13, 2015 |
| Number of Pages: 64 pages |
| Binding: Paperback or Softback |
| ISBN-10: 1507728492 |
| ISBN-13: 9781507728499 |