Open-File Report 99-219 contents page
| Table 6. Seasonal (April through October) median values for submersed aquatic vegetation habitat criteria parameters in freshwater tidal Potomac River segment TF2 for the period 1983 through 1997 | ||||
|
YEAR
|
SECCHI (m)
|
TSS
(mg/l) |
CHLA
(mg/l) |
DIP
(mg/l) |
|
1983
|
0.61
|
16.5
|
5.94
|
0.0400
|
|
1984
|
0.75
|
14.0
|
12.03
|
0.0200
|
|
1985
|
0.70
|
15.0
|
18.04
|
0.0400
|
|
1986
|
0.60
|
16.0
|
9.87
|
0.0240
|
|
1987
|
0.70
|
14.0
|
7.78
|
0.0300
|
|
1988
|
0.70
|
17.0
|
7.03
|
0.0240
|
|
1989
|
0.60
|
13.5
|
5.68
|
0.0325
|
|
1990
|
0.60
|
18.0
|
5.38
|
0.0300
|
|
1991
|
0.75
|
11.8
|
6.12
|
0.0160
|
|
1992
|
0.70
|
17.0
|
5.23
|
0.0260
|
|
1993
|
0.60
|
17.5
|
10.02
|
0.0165
|
|
1994
|
0.60
|
18.0
|
15.20
|
0.0225
|
|
1995
|
0.70
|
20.8
|
18.89
|
0.0190
|
|
1996
|
0.50
|
25.8
|
10.02
|
0.0210
|
|
1997
|
0.50
|
21.3
|
24.30
|
0.0130
|
| Table 7. Seasonal (April through October) median values for submersed aquatic vegetation habitat criteria parameters in oligohaline Potomac Estuary segment POTOH for the period 1983 through 1997 | ||||
|
YEAR
|
SECCHI (m)
|
TSS
(mg/l) |
CHLA
(mg/l) |
DIP
(mg/l) |
|
1983
|
0.82
|
10.5
|
2.67
|
0.0500
|
|
1984
|
0.66
|
16.0
|
26.62
|
0.0600
|
|
1985
|
0.61
|
18.0
|
6.81
|
0.0600
|
|
1986
|
0.60
|
15.5
|
3.61
|
0.0640
|
|
1987
|
0.65
|
15.0
|
3.89
|
0.0475
|
|
1988
|
0.70
|
13.0
|
4.19
|
0.0540
|
|
1989
|
0.50
|
15.5
|
3.74
|
0.0480
|
|
1990
|
0.45
|
21.0
|
3.42
|
0.0500
|
|
1991
|
0.80
|
12.0
|
5.78
|
0.0300
|
|
1992
|
0.60
|
16.3
|
3.36
|
0.0470
|
|
1993
|
0.60
|
19.3
|
4.02
|
0.0448
|
|
1994
|
0.50
|
21.0
|
4.86
|
0.0463
|
|
1995
|
0.58
|
20.8
|
6.15
|
0.0375
|
|
1996
|
0.40
|
30.5
|
8.83
|
0.0258
|
|
1997
|
0.50
|
25.3
|
11.85
|
0.0270
|
Table
8 & 9
Table
4 & 5
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