Inner Horse Reef. This reef lies SE. ¾ E 1½ miles from the eastern ear
of isle au Haute. There is a shoal here of 25 fathoms about 1/8 mile in
diameter. From this the water gradually deepens to NE. for ½ mile, where
it drops off into the mud. Depths on this northeast portion are about 35
fathoms. The bottom is of pebbles and gravel. In spring and fall this is
a good cod ground. Hake are found close to the edge in summer. Fishing
is by small craft, generally, using trawl and handline. It is a good
lobster ground. Marks: Bring Blue Hill Mountain in the saddle of White
Horse; Brimstone showing between Western Ear and Isle au Haute.

Outer Horse Reef. This is a short distance SW. from the Inner Reef,
with only a narrow gully between. The small shoal falls off rapidly on
all sides. It has a depths of 30 fathoms. Over a space 1/4 mile in
diameter the bottom is gravelly. Seasons and species are as on Inner
Horse Reef.

Hake Ground. North of Monhegan island lies a patch called the Hake
Ground or Mud Channel, the first name because of the abundance of hake
taken here during June, July, and August. It extends from just outside
White Head to abreast of Monhegan Island on the northern side. The
depths vary from 20 to 45 fathoms, and the ground is still considered
one of the best hake grounds alongshore. It is fished by small boats and
vessels when the dogfish are on the outer grounds. This is a good
haddock ground in December and January, as well as a good lobster
ground.

Southwest Ground. This lies 2 miles SW. from the western head of Isle
au Haute. It is circular in form, ½ mile in diameter and has a gravelly
bottom with depths varying from 35 to 40 fathoms. It is a cod ground