Although efforts have been made to screen information for data that may be seriously compromised, the data provided here are not guaranteed to be correct or complete.
Conclusions drawn from the data are the responsibility of the users.
For more detail on data quality, including evaluation of data from heterogeneous sources, see technical discussion in the relevant sections. These data may be subject to significant change and are not citeable until reviewed and approved by the U.S. Geological Survey. Data users are cautioned to consider carefully the provisional nature of the information before using it for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Information concerning the accuracy and appropriate uses of these data or concerning other project material may be obtained from the principle investigator for the project that collected the data.