Chemical and Water Quality Kinetic Characteristics and Processes - Hydro-Environmental Analysis: Freshwater Environments - page 401

1.43
1.39
1.35
1.31
1.27
1.23
1.19
1.15
1.11
1.07
1.03
0.995
0.956
0.916
0.877
0.838
0.798
0.759
0.720
0.681
0.641
0.602
0.563
0.523
0.484
0.445
0.405
0.366
0.327
0.287
0.248
0.209
0.170
0.130
0.0909
0.0516

Nitrate-nitrite at 07/31/1995 23:13

Distance (m)

100,000 80,000 60,000 40,000 20,000 0

0 0

5 5

10 10

15 15

20 20

25 25

30 30

100,000 80,000 60,000 40,000 20,000 0

Distance (m)

(a) Walter F. George, Reservoir, GA, predicted nitrate-N concentrations (mg L -1 ) for July 31, 1995

1.26
1.23
1.19
1.16
1.13
1.09
1.06
1.02
0.986
0.951
0.916
0.881
0.847
0.812
0.777
0.742
0.707
0.673
0.638
0.603
0.568
0.533
0.498
0.464
0.429
0.394
0.359
0.324
0.289
0.255
0.220
0.185
0.150
0.115
0.0805
0.0457

Ammonium at 07/31/1995 23:13

Distance (m)

100,000 80,000 60,000 40,000 20,000 0

0 0

5 5

10 10

15 15

20 20

25 25

30

30

100,000 80,000 60,000 40,000 20,000 0

Distance (m)

(b) Walter F. George, Reservoir, GA, predicted ammonia-N concentrations (mg L -1 ) for July 31, 1995

FIGURE 14.28 (a,b) Predicted nitrate-N and ammonia-N concentrations in Lake Walter F. George, Georgia,
for July 31, 1995. (From Martin, J.L. and Hesterlee, C., Detailed reservoir water quality modeling to support
environmental impact statements for the evaluation of ACT and ACF river basins water allocation, Contract
Report prepared for the U.S. Army Engineer District, Mobile, 1988.)

transition zone). In the hypolimnion, and particularly under anaerobic conditions, phosphorus con-
centrations would increase due to the decay and decomposition of organic matter. With relatively
high organic loads to the sediments, sediment diagenesis would result in releases of phosphorus
to the overlying water column. Reduced forms of iron and manganese would be common in an
anoxic hypolimnion; however, under oxic conditions, they may reduce phosphorus concentrations
from the water column.