The scraper extracts US dam information from NPDP ( National Performance of Dams Program ) dams database.
The code is designed for my purposes and revise will be needed for other similar use.
The code is not totally robust if the html_file read in from any of urls is not as expected.
- the url http://npdp.stanford.edu/data_access/international_dams_view.php?editid1=NPDPUSA0029068# does not return a dam page and stops the for loop.