7 
examined three sections of it: (a) Using the lock as a base, from 
the lock up for 6 miles on both sides and in every inlet and up every 
creek (except one) and branch to the head of backwater and some 
distance beyond; (b) using Maxine and a farm house on Prescott 
Creek as bases, the whole of the Locust Fork of the Warrior up to 
Short Creek and its affluent creeks and branches; ( c ) using Cor¬ 
dova as a base, the upper part of the pool from about 6 miles above 
Cordova to about 4 miles below. 
The examination from the lock was made under normal condi¬ 
tions and was in every sense satisfactory. Unfortunately the work 
at Maxine was coincident with a sharp rise, from 4 to 6 feet in this 
part of the river y and was by no means satisfactory. At Prescott 
Creek the same condition prevailed to a less extent, but we took 
unusual pains to determine the condition of this locality, putting 
3-J days on this single creek and the work here, although hampered 
by the high stage of water, was fairly satisfactory. "When we reached 
Cordova the water had fallen nearly to normal, and examination of 
the pool itself, allowing for the effect of the recent fall, was reason¬ 
ably satisfactory. That of the affluents above backwater was not, as 
they had been scoured out by the recent rains. 
We found it convenient to consider the waters examined under 
five heads: (1) The pond itself, the main open body of water; (2) 
the small bights (or bays) of the pond; (3) the bayous at the mouths 
of creeks and branches; 1 (4) the dead water or backwater of the 
creeks and branches. This is from the head of the bayou up to the 
free running water of the creek. It is practically still water, but 
is all within the creek banks. The bayou is out of the creek banks; 
(5) live water of creeks and branches where the water is running as 
freely as before the pond was made. In addition there were marshes, 
pools, etc., caused by the pond, but outside of it, and similar ones not 
caused by it. 
POOL OF LOCK NO. 12, COOSA RIVER. 
JUNE SURVEY. 
Physical condition .—The rise of water is about 63 feet and the 
backwater extends for 25 miles. It was closed in the summer—June 
or July—of 1914. For the lower 5 or 6 miles up to the Narrows the 
river runs in a gorge, and the banks of the pond are against the 
bluff on each side, there being no wide spreading out except in the 
bayou of Paint Creek. The country adjacent is wild and sparsely 
1 The bayou for any creek is the part of the pond filling the valley of the creek which is 
deep enough to overflow the former banks of the creek. Bayous and bights differ only in 
degree, but the latter are usually so much more open to wave action that the breeding 
conditions may be essentially different. 
