Table 29. — Limnological observations in the upper Mississippi River — Continued. 
430 
BULLETIN OF THE BUREAU OF FISHERIES. 
Remarks. 
Qualitative 
vertical haul. 
Calm. 
Do. 
•siaieui oiqno jad Aouajedsumx 
So j 5 
: :2 ::::::: s j 'f 
Current 
velocity 
per second. 
'1985 
K : ® 
2 M h N° i M M M T M M M ! T i * n* 
•sja;8H 
8 : : 
© • • 
* M r M° j ! H M i f M M M if i * ! n 
Number of 
Cladocera 
per cubic 
meter. 
*nB9H 
© ■ o 
5 M p M5 M M M M3 M M M M 1 : S U 2 
•aidmes qoeg 
11 ° 
120 
360 
480 
120 
100 
340 
1,760 
3,080 
2, 900 
2, 400 
1 , 980 
960 
1,120 
1,440 
500' 
i, 080 ; 
780 
420 
440 
500 
1,440 
1,640 
6,900; 
640 
720, 
200 
100 
60 
280 
200 
0 
Number of 
Copepoda 
per cubic 
meter. 
•n«8H 
21, 550 
125, 660 
Jjjp|jinmjj|mmjj!; sip 
•aplnres qosg; 
33 1 820 
125, 660 
6,100 
1,200 
3.060 
1,260 
2,240 
2,200 
2,320 
8’ 640 
10, 420 
38, 160 
30, 460 
17, 040 
4.060 
3, 440 
28, 740 
35,100 
34,600 
30,580 
25, 440 
8, 400 
1,120 
720 
140 
9, 660 
15, 260 
400 
1,120 
1,880 
1, 120 
1,280 
760 
Volume of plankton, 
cubic centimeters 
per cubic meter. 
■;an iropjOA 
:::: i : ::: j ::: ::::::: :S : j i i j 
Pump. 
Centrifuge 
method. 
*93b 
-J9AY 
2 : S3 
s* M S j $ H M M ! P M M M \ ?\ * \ i* 
•eidmes 
qoea 
S3 S5 
•poqiam Suiujag 
S3 5g 
238338833383838 
Tempera- 
ture of 
water. 
d 
26.1 
23.8 
25.6 
25.0 
25.0 
'25.0 
25.0 
26.1 
25.7 
25.4 
23.3 
23.2 
23.2 
23.1 
23.1 
23.0 
22.0 
21.0 
20.3 
23.3 
23! 2 
23.1 
22.7 
21.4 
21.2 
20.6 
19.8 
23.9 
23.6 
25.0 
24.4 
24.4 
25.6 
25.2 
25.2 
■SJ919UI ‘qidaa: 
0 
1.5 
3.0 
4.6 
0 
1.5 
2.7 
0 
1.5 
3.0 
4.6 
6.1 
9- 1 
10. 6 
11.3 
0 
1.5 
3.0 
\Vi 
7.6 
9.1 
10.6 
12.1 
0 ! 
1.5 
1.1 
3.0! 
0 
1. 5 
3.0] 
Character 
of 
bottom. 
. 
Mud 
...do 
...do 
. . .do 
. . -do 
...do 
Sand 
Mud 
. ..do 
■sjoiam ‘mdafj 
5.5 
2.7 
11.3 
12.2 
1.5 
3.0 
4.0 
Time of 
day. 
2.15 - 2.45 
p. m. 
2.45 - 3.10 
p. m. 
1.30- 2p.m. 
4-4.30p.m. 
8 - 9 a. m... 
9- 10 a. m. . 
10 - 10.30 
a. m. 
11-11.30 a. 
m. 
12.30- 1 p. 
Date. 
Aug. 30 | 
...do 

Sept. 1 
...do 
Sept. 2 
. . .do 
...do 
...do 
...do 
•satnn 'tamreqo ^oq 
-uma^s Xq pre<j *^s niojj eoxre^sia 
K : R 
£ <f Cg C, N O CO 
Station number and location. 
105. Mississippi River, above the mouth 
of the Chippewa River, mid- 
stream. 
106. Mississippi River, above the mouth 
of the Chippewa River, left shore. 
107-109. Lake Pepin, opposite LakeCity 
110. Mississippi River, 1 mile above Red 
Wing, Minn., main channel. 
111. Mississippi River, opposite Dia- 
mond Bluff, Wis., main channel. 
112. St. Croix River and Lake, Wis., 3 
miles above the mouth, left shore. 
113. St. Croix River and Lake, Wis., 3 
miles above the mouth, mid lake. 
114. St. Croix River and Lake, Wis., 3 
miles above the mouth, right 
shore. 
115. Mississippi River, below Prescott, 
Wis., main channel. 
cott, Wis., and Hastings, Minn., 
main channel. 
