Great Swamp Ten Towns Committee Water Quality Monitoring
Two Year Nutrient and Hydrologic Budget
June 1999 – May 2001
Black Brook
F. X. Browne, Inc.
June 1999 – May 2000
Block	Baseflow (mgal)	Concentrations (mg/l)					Loads (lbs)
		TP	DRP	NO2/NO3	TKN	TSS	TP	DRP	NO2/NO3	TKN	TSS
June - July	20.029324	0.108	0.048	0.04	0.79	1.6	18.05	8.02	6.69	132.04	267.42
Aug - Nov	33.43977	0.137	0.082	0.03	0.95	4.0	38.23	22.88	8.37	265.09	1116.15
Dec - Mar	67.780875	0.027	0.007	0.06	0.45	6.7	15.27	3.96	33.94	254.52	3789.50
Apr - May	26.834261	0.058	0.033	0.23	0.69	3.0	12.99	7.39	51.50	154.50	671.76
Totals	148.08						84.54	42.25	100.49	806.14	5844.82
June 2000 – May 2001
Block	Baseflow (mgal)	Concentrations (mg/l)					Loads (lbs)
		TP	DRP	NO2/NO3	TKN	TSS	TP	DRP	NO2/NO3	TKN	TSS
June - July	18.63	0.119	0.072	0.06	0.73	4.0	18.50	11.19	9.33	113.50	621.94
August	9.23	0.076	0.044	0.30	0.68	2.5	5.85	3.39	23.10	52.35	192.47
September	7.85	0.090	0.040	0.07	<0.1	9.0	5.90	2.62	4.59	0.00	589.80
October	8.33	0.055	0.032	<0.01	0.44	6.5	3.82	2.22	0.00	30.58	451.73
November	10.66	0.064	0.045	0.19	0.32	3.3	5.69	4.00	16.89	28.45	293.44
Dec - Feb	39.25	0.078	0.025	0.42	0.93	3.3	25.55	8.19	137.57	304.61	1080.89
Mar - Apr	29.12	0.050	0.019	0.01	0.33	1.6	12.15	4.62	2.43	80.19	388.79
May	9.73	0.125	0.017	0.09	1.15	13.0	10.15	1.38	7.31	93.37	1055.50
Totals	132.80						87.61	37.61	201.21	703.06	4674.56
June 1999 – May 2000
Month	Stormflow (mgal)	Concentrations (mg/l)					Loads (lbs)
		TP	DRP	NO2/NO3	TKN	TSS	TP	DRP	NO2/NO3	TKN	TSS
June	1.38	0.42	0.08	0.34	1.38	100.0	4.82	0.92	3.90	15.84	1148.14
July	0.41	0.42	0.08	0.34	1.38	100.0	1.45	0.28	1.17	4.75	344.31
August	4.34	0.42	0.08	0.34	1.38	100.0	15.19	2.89	12.30	49.93	3617.84
September	2.59	0.42	0.08	0.34	1.38	100.0	9.08	1.73	7.35	29.83	2161.69
October	1.53	0.42	0.08	0.34	1.38	100.0	5.36	1.02	4.34	17.63	1277.33
November	2.84	0.42	0.08	0.34	1.38	100.0	9.97	1.90	8.07	32.76	2373.73
December	3.68	0.42	0.08	0.34	1.38	100.0	12.88	2.45	10.43	42.32	3066.97
January	1.93	0.42	0.08	0.34	1.38	100.0	6.75	1.29	5.47	22.19	1607.63
February	5.46	0.42	0.08	0.34	1.38	100.0	19.14	3.65	15.50	62.90	4557.74
March	3.75	0.42	0.08	0.34	1.38	100.0	13.14	2.50	10.64	43.17	3128.04
April	3.61	0.42	0.08	0.34	1.38	100.0	12.66	2.41	10.24	41.58	3013.18
May	4.66	0.42	0.08	0.34	1.38	100.0	16.34	3.11	13.23	53.68	3889.92
Totals	36.18						126.78	24.15	102.63	416.57	30186.53
June 2000 – May 2001
Month	Stormflow (mgal)	Concentrations (mg/l)					Loads (lbs)
		TP	DRP	NO2/NO3	TKN	TSS	TP	DRP	NO2/NO3	TKN	TSS
June	2.42	0.42	0.08	0.34	1.38	100.0	8.48	1.62	6.87	27.86	2019.13
July	6.11	0.42	0.08	0.34	1.38	100.0	21.40	4.08	17.33	70.32	5095.67
August	10.45	0.42	0.08	0.34	1.38	100.0	36.62	6.98	29.65	120.34	8720.05
September	1.87	0.42	0.08	0.34	1.38	100.0	6.56	1.25	5.31	21.56	1562.23
October	0.44	0.42	0.08	0.34	1.38	100.0	1.54	0.29	1.24	5.05	365.80
November	6.40	0.42	0.08	0.34	1.38	100.0	22.43	4.27	18.15	73.68	5339.39
December	7.88	0.42	0.08	0.34	1.38	100.0	27.62	5.26	22.36	90.75	6575.82
January	3.21	0.42	0.08	0.34	1.38	100.0	11.25	2.14	9.11	36.96	2678.58
February	2.47	0.42	0.08	0.34	1.38	100.0	8.66	1.65	7.01	28.44	2061.09
March	11.30	0.42	0.08	0.34	1.38	100.0	39.60	7.54	32.06	130.12	9429.28
April	1.85	0.42	0.08	0.34	1.38	100.0	6.48	1.23	5.25	21.30	1543.73
May	3.56	0.42	0.08	0.34	1.38	100.0	12.48	2.38	10.10	40.99	2970.64
Totals	57.96						203.12	38.69	164.43	667.39	48361.42
June 1999 – May 2000
Rainfall	39.69
June 2000 – May 2001
Rainfall	35.83