Krasnodar GRES Project Volume I11 Environmental Assessment

4.3.1.1 1.2 Type of Pollutants, Location, Distribution
This item is described in detail in Appendices 8 and 9.
Season
Wet, summer
(V-VI I I)
Limiting,
spring-winter
(IX-ll)
Spring (Ill-IV)
Annual average
Table 4.38
Surface Runoff Regime in the Kaladzhinskaya Region
Catchment
Area,
km2
3370
Water
Discharge
m3/s
155,O
39,5
64,O
82,5
Runoff
Module,
I/s per
I km2
46,O
The hydrological regime of the rivers in the Laba river basin is determined by
climatic, hydrogeological, orographic and hydrographic features of the area under
consideration.
The feed water of rivers in the region is mixed. The surface runoff of plain and
piedmont territory is formed by snow melt, rain, and groundwater. The share of
rain water increases in the piedmont rivers and the share of snow water increases
in the plain rivers. Glacial feed water plays an important role in the rivers of
mountain and high-mountain areas with water catchment basins above 1500 m. It
accounts for more than 30 % of the annual runoff in streams originating in glacier
areas (Table 4.39).
11,7
19,O
24,5
Layer, mm
Runoff Precipitations
487
184
100
771
366
307
96
769
Runoff
Coefficient
1,33
0,60
1,04
1 ,OO