498 BULLETIN OF THE BUREAU OF FISHERIES- 



mination of the last line mentioned to the Lakewood Camps Wharf, again starting with 

 a depth of 1 5 feet not far from shore, within two-tenths of a mile 73 feet occur, which 

 deepen to 91 feet about i mile from Lakewood Wharf, toward which it gradually shoals. 

 Again, in a line from Lakewood Wharf to a point about one-third of a mile northward of 

 Hardscrabble Point the water gradually deepens without much variation to 98 feet about 

 i^ miles from the wharf, thence for the remainder of the distance, about four-tenths of a 

 mile, it shoals to 22 feet not far from shore. Another line of soundings from the same 

 wharf approximately in a mid line down the South Arm finds 100 feet, the deepest of the 

 lake, about i}4, miles from the wharf. Thus far the deepening was gradual, but from 

 this point on the bottom seemed to be more or less irregular, and there is a depth fluc- 

 tuating between 48 and 81 feet for about i}4 rniles farther, where the water is generally 

 not over about 30 feet. Within the Pocket the deepest water is only 8 and 9 feet. 



The Outlet of Richardson Lakes. — The outlet of Richardson Lakes is Rapid 

 River, which is about 6 miles long, connecting these lakes with Umbagog Lake, in this dis- 

 tance falling about 200 feet. Slightly over one-half of a mile below Middle Dam is an ex- 

 pansion of the river known as Pond-in-the-River. This pond has an area of 0.83 of a 

 square mile and a capacity of about 86,981,000 cubic feet at high water. It is irregu- 

 larly triangular in shape, the apex being at the southeast end and the inlet entering at the 

 eastern and the outlet leaving at the western basal angle. The distance from the mouth 

 of the inlet in a straight line along the eastern shore is nearly lyi miles and something 

 over I Y^ miles to the quick water of the outlet. 



The northern side of the pond curves irregularly southward, forming a broad or 

 rounded point somewhere near midway between the inlet and outlet. In a straight line 

 from this point to the apex of the triangle it is nearly i ^ miles, carrying a depth of water 

 from 10 feet near this point to 30 feet not far from the southern end of the pond. There 

 is a fairly general depth of 19 to 29 feet. There are a few shoals at times becoming 

 islands, in the pond. 



A small brook enters the apex from the southward and another from the northward 

 enters the cove immediately west of the mouth of the outlet. 



The fall of Rapid River, previously mentioned, makes the stream a very quick one 

 all the way to the level of Umbagog Lake. The present dam at Errol has flooded the lake 

 to such an extent that it extends a broad dead-water arm up the Rapid River to the so- 

 called falls, some miles from the old mouth of the river. The river is very rocky and con- 

 tains bowlders of various sizes from pebbles to those of tons in weight, and there are, 

 consequently, many pools and eddies in its course. 



Locally, frequent mention is made of the falls of Rapid River. There is no decided 

 pitch or abrupt waterfall in the course of the stream. The term falls merely distin- 

 guishes the rapid portion from the lower, or dead water, part of the river. 



UMBAGOG LAKE. 



This lake, lying partly in Maine and partly in New Hampshire, is the lowermost 

 in the Rangeley chain of lakes. It has an elevation at high water of 1,246.3 feet abov^e 

 the sea and is the immediate source of the Androscoggin River. It seems never to have 

 had any other than its aboriginal name. 



The lake is irregular in shape, proportionally long and narrow, with many deep coves 

 and resulting points. Nearly two-thirds of it is in New Hampshire. The general 



