EPA has partially approved the 2016 303(d) list; this list can be used in determining impaired waters for the NH Small MS4 Notice of Intent NOI.
The partial approval covers almost all of the same waterbodies as the 2014 partial approval (see approval documents for details). For certain segments of Great Bay, the 2012 list is still the latest approved list.
See 2016 NH 303d List Approval Memorandum for more information.
See https://www4.des.state.nh.us/blogs/watershed/?p=4034 for recent maps of impaired waters.
EPA will be updating their website soon.