Patuxent Wildlife Research Center

North American Amphibian Monitoring Program

Data download

USGS Data Liability Disclaimer

The data you have secured from this database have not received Director's approval and as such are provisional and subject tDo revision. The data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the sole responsibility of the user.

Although NAAMP data have undergone substantial quality assurance review prior to posting, it is possible that some errors or inaccuracies have remained undetected. NAAMP data should therefore be considered provisional given that ongoing review is likely to result in future revision. Users are cautioned to carefully consider this caveat before using NAAMP data for decisions directly relating to public and personal safety issues or those involving significant monetary or operational consequence.

While these data have been successfully processed on computer systems at the USGS Patuxent Wildlife Research Center, no guarantee is expressed regarding the accuracy or utility of these data on any other system nor should their distribution be construed as implication of such a warranty. This disclaimer applies to both individual and aggregate uses of the data. The U.S. Geological Survey shall not be held liable for improper or inappropriate use of data obtained from the NAAMP data download website. Information concerning the accuracy and appropriate use of these data may be obtained from the USGS NAAMP Coordinator (email:

Terms of Use

NAAMP is a publicly supported program and users of the program's data are obligated to acknowledge their use of NAAMP data when describing their work to both the public media and scientific audiences alike. These data represent the combined efforts of hundreds NAAMP participants who survey routes annually, as well as the work of dedicated USGS and State Partners that manage the survey effort. It is of vital interest to the continued success of the program that all data users submit a reprint or photocopy of work augmented by NAAMP data at the time of its publication (email:

Finally, if you are not already an active observer in the survey, we encourage you to join the team and contribute by running a route yourself. The only requirements are knowledge or willingness to learn frog calls for your area, passing our online frog quiz, good hearing and a reliable vehicle. Thank you for supporting our program and we look forward to learning of your work.

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OMB Control Number: 1028-0078   Expiration Date: 01/31/2018
Last Modified: 07/19/2012