Clear Lake Surface Water Data Averaged for All Three Sample Sites:
Compound	2011	2010	2009	2008	2007	2006	2005	2004	Unit	Quant Limit
Ammonia Nitrogen as N	NA	0.01	0.14	0.03	0.16	0.16	0.04	NA	mg/L	0.05
Chlorophyll A	21	22	17	28	33	53	39.8	47.0	ug/L	1
Dissolved Oxygen	8.7	8.5	9.4	9.5	8.7	9.0	9.4	9.1	mg/L	0.1
Field pH	8.5	8.6	8.6	8.9	8.5	8.4	8.53	8.8	pH Units
Nitrate + Nitrite Nitrogen as N	0.03	0.02	0.16	0.14	0.12	0.02	0.06	0.08	mg/L	0.05
Ortho Phosphate as P	NA	0	0	0	0	0	0.00	NA	mg/L	0.02
Secchi Disk Depth	0.91	0.68	0.88	0.7	0.82	0.48	0.52	0.54	meters	0.01
Specific Conductance	310	332	339	299	300	289	280	259	umhos/cm	1
Total Kjeldahl Nitrogen as N	1.2	1.2	1.5	1.6	1.4	1.91	1.81	2.11	mg/L	0.1
Total Phosphate as P	0.05	0.055	0.062	0.058	0.062	0.091	0.114	0.080	mg/L	0.02
Total Suspended Solids	12	14	12	19	17	28	29	30	mg/L	1
Total Volatile Suspended Solids	NA	9	7	12	10	16	18.42	NA	mg/L	1
Turbidity	9	8.4	9	10.5	NA	NA	NA	NA	NTU
Number of Samples	30	39	42	38	39	36	36	36
Ventura Marsh East Data (Outflow) Averaged
(Tributary Site 7 - Ventura Marsh Outflow)
Compound	2011	2010	2009	2008	2007	2006	2005	2004	Unit	Quant Limit
Nitrate + Nitrite Nitrogen as N	0.2	0.12	0.44	0.4	0.46	0.1	0.43	1.4	mg/L	0.05
Total Kjeldahl Nitrogen as N	6	4	3.3	3.8	4.8	5.6	4.29	3.73	mg/L	0.1
Total N	6.2	4.1	3.7	4.2	5.3	5.7	4.72	5.1	mg/L	0.1
Total Phosphate as P	0.4	0.28	0.22	0.24	0.35	0.43	0.299	0.289	mg/L	0.02
Total Suspended Solids	106	71	46	59	82	99	43.8	35.4	mg/L	1
Temp	69.8	68	63.7	64.2	68.8	68.2	72.5	68	F	NA
Dissolved Oxygen	7.3	8.1	9.1	10.7	10.5	8.9	9.68	8.08	mg/L	0.1
Conductivity	317	326	366	307	308	266.6	317	294	umhos/cm	1
Total Dissolved Solids	NA	NA	NA	NA	166	141	163	160	mg/L	NA
Field pH	8.5	8.8	8.6	9.6	8.9	8.9	8.4	8.6	pH	NA
Number of Samples	10	13	14	13	6	6	10	12
Ventura Marsh Data (West Site) Averaged
Compound	2007	2006	2005	2004	Unit	Quant Limit
Ammonia Nitrogen as N	0	0	1.7	NA	mg/L	0.05
Chlorophyll A	186	200	186	169	ug/L	1
Dissolved Oxygen	10.7	11.6	10.1	10.66	mg/L	0.1
Field pH	9.1	9.1	8.5	8.67	pH Units
Nitrate + Nitrite Nitrogen as N	0.82	2.85	1.72	0.87	mg/L	0.05
Ortho Phosphate as P	0	0	0.06	NA	mg/L	0.02
Secchi Disk Depth	0.24	0.23	0.35	0.43	meters	0.01
Specific Conductance	301	286	310	320	umhos/cm	1
Total Kjeldahl Nitrogen as N	4.7	4	4.6	3.9	mg/L	0.1
Total Phosphate as P	0.35	0.393	0.375	0.339	mg/L	0.02
Total Suspended Solids	77	88	52	26	mg/L	1
Total Volatile Suspended Solids	49	54	32	NA	mg/L	1
Number of Samples	13	7	12	12
Clear Lake Watershed Tributary Data
Site 1 - HWY 18 N of Ventura
Compound	2010	2007	2006	2005	2004	Unit	Quant Limit	2010n	2007n	2006n	2005n	2004n
Nitrate + Nitrite Nitrogen as N	7.9	10.85	7.16	9.34	9.13	mg/L	0.05	8	6	8	10	12
Total Kjeldahl Nitrogen as N	0.7	0.8	0.9	0.701	1.06	mg/L	0.1	8	6	8	10	12
Total N	8.6	11.7	8.1	10.041	10	mg/L	0.1		6	8	10	12
Total Phosphate as P	0.124	0.15	0.25	0.172	0.227	mg/L	0.02	8	6	8	10	12
Total Suspended Solids	8.6	3	45	6	20	mg/L	1	8	6	8	10	12
E.coli	313	NA	81	2250	185	cfu/100 ml	10	8	0	1	2	2
Temp	60.6	63.7	61	62.6	61.3	F	NA	8	6	7	10	12
Dissolved Oxygen		9.3	8	10.428	8.43	mg/L	0.1		6	8	10	12
Conductivity	555	598	511	565.5	505.5	umhos/cm	1	8	6	7	10	12
Total Dissolved Solids	327	342	302.9	326.2	279.2	mg/L	NA	8	6	7	10	12
Field pH	7.6	7.9	7.9	7.24	7.42	pH	NA	8	6	8	10	12
Site 2 - S14  S of Ventura
Compound	2010	2007	2006	2005	2004	Unit	Quant Limit	2010n	2007n	2006n	2005n	2004n
Nitrate + Nitrite Nitrogen as N	0.9	6.18	4.17	6.53	6.81	mg/L	0.05	8	6	8	10	12
Total Kjeldahl Nitrogen as N	2	0.9	1.2	1.078	1.22	mg/L	0.1	8	6	8	10	12
Total N	2.9	7.05	5.32	7.608	8.03	mg/L	0.1		6	8	10	12
Total Phosphate as P	0.244	0.14	0.29	0.218	0.229	mg/L	0.02	8	6	8	10	12
Total Suspended Solids	69	14	41	39.9	19.3	mg/L	1	8	6	8	10	12
E.coli	246	NA	90	3500	340	cfu/100 ml	10	8	0	1	2	2
Temp	67.4	63.0	65.2	65.77	63	F	NA	8	6	8	10	12
Dissolved Oxygen		7.6	7.3	7.214	7.99	mg/L	0.1		6	8	10	12
Conductivity	546	564	580.9	574	494	umhos/cm	1	8	6	8	10	12
Total Dissolved Solids	234	325	323.8	317.6	282.7	mg/L	NA	8	6	8	10	12
Field pH	7.9	7.7	8.1	7.68	7.63	pH	NA	8	6	8	10	12
Site 3 - 240th St S of Ventura
Compound	2010	2007	2006	2005	2004	Unit	Quant Limit	2010n	2007n	2006n	2005n	2004n
Nitrate + Nitrite Nitrogen as N	9.1	11.63	10.94	13.48	11.59	mg/L	0.05	8	6	8	10	12
Total Kjeldahl Nitrogen as N	0.3	0.4	0.6	0.595	0.93	mg/L	0.1	8	6	8	10	12
Total N	9.4	12.02	11.5	14.075	12.52	mg/L	0.1		6	8	10	12
Total Phosphate as P	0.075	0.10	0.21	0.13	0.255	mg/L	0.02	8	6	8	10	12
Total Suspended Solids	0.7	2	10	3.6	32.5	mg/L	1	8	6	8	10	12
E.coli	670	NA	320	2310	655	cfu/100 ml	10	8	0	1	2	2
Temp	56.6	57.8	57.6	57.36	58.1	F	NA	8	6	8	10	12
Dissolved Oxygen		8.8	8.2	9.66	7.87	mg/L	0.1		6	8	10	12
Conductivity	546	549	542.3	545.2	491.8	umhos/cm	1	8	6	8	10	12
Total Dissolved Solids	340	338	334.6	336.5	302.2	mg/L	NA	8	6	8	10	12
Field pH	7.6	7.6	8.1	7.34	7.3	pH	NA	8	6	8	10	12
Site 4 - Farmers Beach Stream
Compound	2010	2007	2006	2005	2004	Unit	Quant Limit	2010n	2007n	2006n	2005n	2004n
Nitrate + Nitrite Nitrogen as N	0.4	1.80	3.37	2.62	1.98	mg/L	0.05	7	4	3	6	12
Total Kjeldahl Nitrogen as N	1	0.8	0.8	0.83	0.89	mg/L	0.1	7	4	3	6	12
Total N	1.4	2.6	4.0	2.068	2.87	mg/L	0.1		4	3	6	12
Total Phosphate as P	0.194	0.23	0.17	0.163	0.203	mg/L	0.02	7	4	3	6	12
Total Suspended Solids	7	3	3	3	11	mg/L	1	7	4	3	6	12
E.coli	1131	NA	0	1505	1500	cfu/100 ml	10	7	0	0	2	2
Temp	66	62.5	64.3	66.4	64.4	F	NA	7	4	3	6	12
Dissolved Oxygen		4.7	6.1	10.1	6.12	mg/L	0.1		4	3	6	12
Conductivity	448	429	488	452	433	umhos/cm	1	7	4	3	6	12
Total Dissolved Solids	246	252	273	247	242	mg/L	NA	7	4	3	6	12
Field pH	7.6	7.7	7.9	7.5	7.5	pH	NA	7	4	3	6	12
Site 5 - Farmers Beach Marsh
Compound	2010	2007	2006	2005	2004	Unit	Quant Limit	2010n	2007n	2006n	2005n	2004n
Nitrate + Nitrite Nitrogen as N	0.1	0	0	0.01	0.01	mg/L	0.05	5	3	2	9	12
Total Kjeldahl Nitrogen as N	1	1.4	0.8	1.42	1.35	mg/L	0.1	5	3	2	9	12
Total N	1.1	1.4	0.8	1.29	1.36	mg/L	0.1	5	3	2	9	12
Total Phosphate as P	0.69	0.62	0.59	0.758	0.7	mg/L	0.02	5	3	2	9	12
Total Suspended Solids	3.1	4	6.5	6	9	mg/L	1	5	3	2	9	12
E.coli	243	NA	NA	1170.00	30	cfu/100 ml	10	5	0	0	2	2
Temp	68.3	63.2	65.05	68.2	67.5	F	NA	5	3	2	9	12
Dissolved Oxygen		3.5	3.4	2.9	3	mg/L	0.1		3	2	9	12
Conductivity	498	484	504.5	500	470	umhos/cm	1	5	3	2	9	12
Total Dissolved Solids	266	277	280	319	257	mg/L	NA	5	3	2	9	12
Field pH	7.3	7.5	7.6	7.2	7.5	pH	NA	5	3	2	9	12
Site 6 - State Park Stream
Compound	2010	2007	2006	2005	2004	Unit	Quant Limit	2010n	2007n	2006n	2005n	2004n
Nitrate + Nitrite Nitrogen as N	3.6	4.9	6.63	6.485	NA	mg/L	0.05	8	6	6	10	12
Total Kjeldahl Nitrogen as N	0.7	1.0	0.7	0.809	NA	mg/L	0.1	8	6	6	10	12
Total N	4.3	5.8	7.3	7.294	NA	mg/L	0.1		6	6	10	12
Total Phosphate as P	0.125	0.16	0.12	0.136	NA	mg/L	0.02	8	6	6	10	12
Total Suspended Solids	6.5	10	6	10.6	NA	mg/L	1	8	6	6	10	12
E.coli	700	NA	600	890	NA	cfu/100 ml	10	8	0	1	3	2
Temp	64.1	65.5	62.2	67.6	NA	F	NA	8	6	6	10	12
Dissolved Oxygen		8.6	7.3	9.2	NA	mg/L	0.1		6	6	10	12
Conductivity	510	551	602.2	517	NA	umhos/cm	1	8	6	6	10	12
Total Dissolved Solids	291	306	352	280	NA	mg/L	NA	8	6	6	10	12
Field pH	8.2	8.3	8.2	8	NA	pH	NA	8	6	6	10	12
Site 8 - S14 N of Ventura
Compound	2010	2007	2006	2005	2004	Unit	Quant Limit	2010n	2007n	2006n	2005n	2004n
Nitrate + Nitrite Nitrogen as N	8.9	10.7	9.45	10.49	10.21	mg/L	0.05	8	6	8	10	12
Total Kjeldahl Nitrogen as N	0.3	0.8	0.4	0.70	1.06	mg/L	0.1	8	6	8	10	12
Total N	9.2	11.5	9.9	11.50	11.27	mg/L	0.1		6	8	10	12
Total Phosphate as P	0.11	0.49	0.12	0.221	0.292	mg/L	0.02	8	6	8	10	12
Total Suspended Solids	1.5	5	2	6	8.5	mg/L	1	8	6	8	10	12
E.coli	349	NA	40	425.00	0	cfu/100 ml	10	8	0	1	2	2
Temp	57.2	58.5	55.6	57.57	59	F	NA	8	6	8	10	12
Dissolved Oxygen		8.2	8.4	9.40	8.4	mg/L	0.1		6	8	10	12
Conductivity	534	565	524	552.00	517	umhos/cm	1	8	6	8	10	12
Total Dissolved Solids	330	344	332	339.00	314	mg/L	NA	8	6	8	10	12
Field pH	7.6	7.7	7.8	7.20	7.1	pH	NA	8	6	8	10	12
Site 9 - Drainage into Harbourage
Compound	2010	Unit	Quant Limit	2010n
Nitrate + Nitrite Nitrogen as N	3.7	mg/L	0.05	8
Total Kjeldahl Nitrogen as N	0.9	mg/L	0.1	8
Total N	4.6	mg/L	0.1
Total Phosphate as P	0.224	mg/L	0.02	8
Total Suspended Solids	6.2	mg/L	1	8
E.coli	488	cfu/100 ml	10	8
Temp	63.3	F	NA	8
Dissolved Oxygen		mg/L	0.1
Conductivity	497	umhos/cm	1	8
Total Dissolved Solids	283	mg/L	NA	8
Field pH	7.7	pH	NA	8