
1) Water data sources directory
Found on
https://www.crosswordclues.com/clue/wdsd

WDSD (94.7 FM) is a radio station licensed to serve Dover, Delaware. The station is owned by Clear Channel Communications. It airs a country music format. In addition to country music, WDSD does carry some sporting events. WDSD broadcasts NASCAR races, and is the flagship station for University of Delaware athletics. Some UD events are broadcast o...
Found on
http://en.wikipedia.org/wiki/WDSD

acronym: Water Data Sources Directory (USGS)
Found on
https://www.encyclo.co.uk/local/20002
No exact match found.