Open-File Report 99-219 contents page

Table 8. Seasonal (April through October) median values for submersed aquatic vegetation habitat criteria parameters in mesohaline Potomac Estuary segment POTMH for the period 1983 through 1997
YEAR	SECCHI (m)	TSS (mg/l)	CHLA (mg/l)	DIP (mg/l)	DIN (mg/l)
1983	0.88	7.5	2.83	0.0400	0.5860
1984	0.87	6.0	8.03	0.0400	0.1895
1985	1.15	8.1	7.06	0.0200	0.1195
1986	1.20	6.0	7.33	0.0100	0.2100
1987	1.20	6.0	9.12	0.0070	0.2500
1988	1.15	8.0	13.46	0.0080	0.1495
1989	1.10	8.0	10.39	0.0090	0.4035
1990	1.00	11.0	8.82	0.0080	0.2700
1991	1.25	7.0	7.18	0.0045	0.1390
1992	1.40	12.0	5.98	0.0090	0.2330
1993	1.20	8.0	8.01	0.0100	0.1400
1994	1.15	7.6	9.12	0.0065	0.1760
1995	1.40	12.5	7.18	0.0080	0.1435
1996	1.00	12.0	13.23	0.0090	0.6320
1997	1.00	13.0	11.10	0.0070	0.2155

 

Table 9. Seasonal (April through October) median values for submersed aquatic vegetation habitat criteria parameters at freshwater tidal Potomac River monitoring station XFB2470 for the period 1983 through 1997
YEAR	SECCHI (m)	TSS (mg/l)	CHLA (mg/l)	DIP (mg/l)	DIN (mg/l)
1983	0.76	12.0	9.33	0.0300	1.9040
1984	0.87	10.0	4.97	0.0300	2.1335
1985	1.01	12.5	6.74	0.0400	2.0330
1986	0.70	13.0	6.76	0.0180	1.8540
1987	0.80	14.0	6.88	0.0310	2.0680
1988	0.65	21.5	6.06	0.0210	2.5440
1989	0.50	15.0	6.80	0.0380	2.1120
1990	0.60	18.0	9.57	0.0320	2.0520
1991	0.60	14.5	8.72	0.0160	2.5720
1992	0.60	19.0	7.85	0.0250	2.4120
1993	0.60	19.0	14.45	0.0120	2.1000
1994	0.60	15.5	14.95	0.0215	1.9045
1995	0.70	19.5	18.19	0.0160	1.7640
1996	0.60	22.5	9.79	0.0225	1.6395
1997	0.65	19.0	18.40	0.0140	1.6070

Table 10 & 11

Open-File Report 99-219 contents page