LICENSE

U.S.Geological Survey Software User Rights Notice
				
Copied from http://water.usgs.gov/software/help/notice/ on December 6, 2013.  
Please check webpage for updates.

Software and related material (data and (or) documentation), contained in or 
furnished in connection with a software distribution, are made available by the 
U.S. Geological Survey (USGS) to be used in the public interest and in the 
advancement of science. You may, without any fee or cost, use, copy, modify, 
or distribute this software, and any derivative works thereof, and its supporting 
documentation, subject to the following restrictions and understandings.

If you distribute copies or modifications of the software and related material, 
make sure the recipients receive a copy of this notice and receive or can get a 
copy of the original distribution. If the software and (or) related material are 
modified and distributed, it must be made clear that the recipients do not have 
the original and they must be informed of the extent of the modifications. For 
example, modified files must include a prominent notice stating the modifications 
made, the author of the modifications, and the date the modifications were made. 
This restriction is necessary to guard against problems introduced in the software 
by others, reflecting negatively on the reputation of the USGS.

The software is public property and you therefore have the right to the source 
code, if desired.

You may charge fees for distribution, warranties, and services provided in 
connection with the software or derivative works thereof. The name USGS can be 
used in any advertising or publicity to endorse or promote any products or 
commercial entity using this software if specific written permission is obtained 
from the USGS.
				
The user agrees to appropriately acknowledge the authors and the USGS in 
publications that result from the use of this software or in products that 
include this software in whole or in part.

Because the software and related material are free (other than nominal materials 
and handling fees) and provided "as is," the authors, the USGS, and the United 
States Government have made no warranty, express or implied, as to accuracy or 
completeness and are not obligated to provide the user with any support, consulting, 
training or assistance of any kind with regard to the use, operation, and performance 
of this software nor to provide the user with any updates, revisions, new versions 
or "bug fixes".
				
The user assumes all risk for any damages whatsoever resulting from loss of use, 
data, or profits arising in connection with the access, use, quality, or 
performance of this software.