# //UNITED STATES GEOLOGICAL SURVEY       https://water.usgs.gov/ 
# //NATIONAL WATER INFORMATION SYSTEM     https://waterdata.usgs.gov/ 
# //HELP =  https://waterdata.usgs.gov/nwisweb/get_ratings?help 
# //RETRIEVED: 2018-09-19 04:48:04 (waterdata)
# //QUERY = https://waterdata.usgs.gov/nwisweb/get_ratings?site_no=07256500&file_type=exsa&format=rdb
# //NUMBER OF FILES RETURNED BY QUERY = 0   (0.0221 sec) 
agency_cd	site_no	type	update_time	url
5S	15s	4s	10D	100S