Krasnodar GRES Project Volume I11 Environmental Assessment

Regime
Phase
Spring
flood rise
Spring
flood drop
Floods
Sediment
Runoff
Suspended
Suspended
Carried on
bottom
Carried on
bottom
Total carried
on bottom
and
suspended
sediments
Characteristic
of Sediment
Composition
Large
Medium
Small
Large
Medium
Small
Table 4.31
Particle Size Distribution of Suspended Sediments
in the Laba River Near Kaladzhinskaya
Measurement
Date
27.V.74
9.V.74
21 .V1.73
14.V11.71
2.V1.71
27.V111.71
23.1X.71
Table 4.32
Sediment Discharge Rate in the Laba River Near Kaladzhinskaya
Unitof
Measure-
ment
kg/s
thou.tons
kg/s
thou.
tons
thou.tons
,
Parameters of
Probability Curve
Ave. Cv C.
22.8
720
6.85
21 6
936
0.53
Particle Content (% by Weight) with Diameter mm
1-
0.5
0.5
0.2
1.06
4.2
0.6
0.5-
0.2
30.9
20.9
5.1
32.9
8.4
3.3
1.9
1
60.0
1900
18.0
568
2468
0.2-
0.1
33.3
54.5
21.4
40.4
32.0
2.0
19.3
5
45.6
1440
13.7
433
1873
0.1-
0.05
9.3
8.5
18.5
14.6
20.7
9.7
39.4
Probability, %
10 25 75
39.0
1230
11.7
369
1599
0.05-
0.01
21.8
26.8
29.2
8.4
23.9
44.2
30.1
31.8
1000
9.5
300
1300
0.01-
0.005
2.0
0.4
14.0
442
4.2
133
575
21.5
3.1
15.0
40.8
9.3
95
7.2
228
2.2
69
297
0.005-
0.001
2.2
8.7
97
6.0
190
1.8
57
247
PAGE 4-34