Category:Graticules by feature
This is the category for listings of graticules according to some feature contained therein: e.g. all the graticules a particular river flows through, containing part of a particular mountain range, all the graticules visited by Elvis, or the world's most annoying graticules to geohash in.
For listings of all graticules in a particular ocean or sea, see instead Category:Graticules by body of water. For all graticules in a particular political division, see the category for that state, province or country, e.g. Category:Canada or Category:North Dakota.