164 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Pettit Lake does not differ materially from Alturas Lake in the animal and plant 
life wliieh it sii[)ports. So far as we were able to learn, the ffslies of the two lakes are 
identical as to species, BJiinichfhys, Coitus, mid Agosia being apparently more eommon 
in Pettit, while suckers seemed to be more abnndant in Altnras Lake. 
Inlets . — This lake has two inlets, both of which enter it at the upper end, as shown 
on the accompanying map. The inlet to the right is much smaller than the other, and 
is probably not over 1:} or ‘2 miles long. The other is at least 5 miles in length. The 
canyon through which these streams flow is extremely rough and rocky, excei»t near 
the lake, where it is level and somewhat marshy. But beginning a mile or so above 
the lake thei'e is scarcely any soil in many places, the bedrock coming to the surface 
in a wonderful series of mutton-backs, many of which are of immense size and show 
the largest grooves and most interesting striations I liave ever seen. There are in 
])laces great masses of fallen timber, ^yhich liave been brought into the canyon by 
frequent snowslides, while in other places are large quantities of rock fragments, which 
have been brought down by snowslides or which have fallen from the cliff's above. 
The right side of this canyon is for the most part rather steep, but pretty well 
timbered, while on the left it is bounded by a great granite wall, in some places per- 
[)cndicnlar for several hundred feet. There are occasional breaks in this wall, but it 
is difficnlt to find any place w here one can climb to the top from below. In descending 
into this canyon from the summit of Mount Parks, we were compelled to go several 
miles above the lake before finding a place where we conld descend this wall. Between 
the top of the wall and the summit of the mountain is a large area covered with slide 
rock, which every jmar contributes liberally to the talus at the foot of the wall. This 
mountain peak, named Mount Parks, is the culmination of the ridge separating Pettit 
Lake from Yellowbelly Lake, and is 10,400 feet above sea level. It is an extremely 
rugged peak extending about 1,000 feet above timber line. In the more protected 
places on its slopes the snow remains continuously. 
At the liead of the main inlet to Pettit Lake are two small lakes, the larger known 
as Alice Lake. Their outlet has numerous falls and cascades. These lakes apparently 
have no fish in them. 
Redfish Lake . — This is the largest of all the so-called redtish lakes, and is situated 
on the west side of Salmon River Valley, about 15 miles below or north of Pettit Lake. 
It is about () miles long and a mile wide, and, like all the other lakes of this series, its 
general direction is northeast and southwest. There are no large irregularities in tlie 
shore line, but the middle of the lake bows somewhat to the east. The right shore is 
low in most of its extent, rising gradually into a high morainic ridge, 200 to 400 feet 
higher than the lake. The left shore is abru})t and rocky throughout most of its 
length, and ascends rajiidly into a high, rugged mountain ridge. 
At the head of the lake the shore is also rocky, and ascends into precipitous cliff's, 
there being no level valley above. There are here two small iidets and one consider 
ably larger. They all have their rise in the snow-fields lying among the extremely 
rugged mountains which lie beyond the lake. The canyons down which they come 
are remarkably rough, being filled with roches montonnees, loose bowlders, fallen and 
tangled timber, and other obstructions. The largest of these inlets enters the lake 
near the left or west side of the upper end, and is about 25 feet wide and 2 feet deep 
near the month. It woidd be very difficult for fish to ascend this stream more than Ui 
few hundred yards, so full is it of fallen timber, rapids, and cascades; indeed, it seems 
that wholly impassable falls would soon be encountered. 
