National Water Information System: Mapper
NWIS HOME | MAPPER
Disclaimer
This interface provides a map view of the locations of sites with USGS water data. Google Maps are used to provide speed and versatility in a format that is familiar to many users. The interface can be used most efficiently by following a few basic rules:
- Center and zoom to area of interest.
- Sites will not display until zoomed in to avoid clutter and
excessive drawing time.
- Specific areas such as US states and territories can be selected
using the drop-down list.
- Named places can be selected using Google geographic searching.
This web page and all linked USGS pages are subject to official Policies and Notices, including Information Policies, which specify release of liability, protection of intellectual property, and non-endorsement of non-USGS products and services.
Background Views
Background maps and images, including any cartographic annotation, are furnished by organizations other than USGS and are subject to any limitations, disclaimers, or terms of use provided by them. The furnishing organization should be contacted for questions or to report errors regarding background maps and images. Views are created using prepared tiles that are matched to the scale being displayed, which provides very fast and nearly seamless zoom and pan, but also limits viewing to the tiles that are already available. In built-up areas in areas with large populations tiles are usually available for close-in zooming, but may not be available in some remote areas.
If background views are not available for close-in zooming in an area of interest, try using a different background. Generally, satellite views may provide the best available coverage in some remote areas.
Map sources and Terms of Use are provided at the bottom of the Google Map window, and should be consulted for details. Please note that Google Maps is a dymanic product and may use other map and image sources as alternatives to those listed below.
Following are sources and web links for background views used in this interface. The default background view is a shaded relief terrain map.
- Map - This shows a map with a traditional depiction of roads,
parks, borders, bodies of water and more.
Sources:
LeadDog Consulting,
Tele Atlas
- Satellite - This shows aerial imagery.
Sources:
TerraMetrics,
NASA
- Hybrid - This shows a modified composite of the Map and Satellite
views.
- Terrain - This shows physical elevation as shaded relief and
elevation lines. It also includes street names and other
information.
Sources:
LeadDog Consulting,
Tele Atlas
- USGS - This shows USGS topographic map.
Source:
TerraServer
U.S. Department of the Interior |
U.S. Geological Survey
