Open-File Report 99-219 contents page
Table 14. Seasonal (April through October) median values for submersed aquatic vegetation habitat criteria parameters at oligohaline Potomac Estuary monitoring station XDA1177 for the period 1983 through 1997 | |||||
YEAR
|
SECCHI (m)
|
TSS
(mg/l) |
CHLA
(mg/l) |
DIP
(mg/l) |
DIN
(mg/l) |
1983
|
0.82
|
10.0
|
2.46
|
0.0500
|
1.2200
|
1984
|
0.62
|
22.0
|
28.87
|
0.0700
|
0.5150
|
1985
|
0.61
|
17.0
|
8.75
|
0.0600
|
0.6590
|
1986
|
0.60
|
13.6
|
3.29
|
0.0590
|
0.7230
|
1987
|
0.55
|
15.0
|
4.49
|
0.0470
|
1.0070
|
1988
|
0.80
|
13.0
|
3.74
|
0.0540
|
0.6720
|
1989
|
0.50
|
18.0
|
4.34
|
0.0540
|
1.5240
|
1990
|
0.50
|
20.0
|
3.36
|
0.0500
|
1.2460
|
1991
|
0.75
|
13.5
|
5.63
|
0.0330
|
0.4910
|
1992
|
0.60
|
17.0
|
3.27
|
0.0505
|
1.0850
|
1993
|
0.60
|
18.5
|
4.42
|
0.0475
|
0.5590
|
1994
|
0.55
|
17.5
|
4.24
|
0.0460
|
0.7180
|
1995
|
0.58
|
21.0
|
5.00
|
0.0430
|
0.8075
|
1996
|
0.35
|
34.3
|
8.83
|
0.0275
|
1.3613
|
1997
|
0.50
|
25.3
|
7.85
|
0.0275
|
0.5023
|
Table 15. Seasonal (April through October) median values for submersed aquatic vegetation habitat criteria parameters at mesohaline Potomac Estuary monitoring station XDC1706 for the period 1983 through 1997 | |||||
YEAR
|
SECCHI (m)
|
TSS
(mg/l) |
CHLA
(mg/l) |
DIP
(mg/l) |
DIN
(mg/l) |
1983
|
0.88
|
8.0
|
3.05
|
0.0600
|
0.8430
|
1984
|
0.64
|
10.0
|
7.38
|
0.1000
|
0.2870
|
1985
|
0.79
|
9.8
|
6.01
|
0.0600
|
0.3165
|
1986
|
0.80
|
9.8
|
5.46
|
0.0495
|
0.4095
|
1987
|
0.95
|
7.0
|
5.05
|
0.0455
|
0.6620
|
1988
|
0.90
|
11.0
|
6.23
|
0.0480
|
0.4920
|
1989
|
0.80
|
12.5
|
5.57
|
0.0575
|
1.0460
|
1990
|
0.70
|
14.5
|
4.86
|
0.0380
|
0.5350
|
1991
|
0.80
|
13.5
|
7.20
|
0.0310
|
0.2400
|
1992
|
0.90
|
14.0
|
5.67
|
0.0270
|
0.5120
|
1993
|
0.80
|
14.0
|
7.58
|
0.0475
|
0.3200
|
1994
|
0.60
|
18.5
|
7.73
|
0.0445
|
0.3240
|
1995
|
0.80
|
17.0
|
5.58
|
0.0320
|
0.3865
|
1996
|
0.70
|
19.0
|
9.80
|
0.0330
|
1.0190
|
1997
|
0.80
|
19.0
|
11.95
|
0.0165
|
0.2540
|