Total Phosphorous (Summer average, June - August)
West Okoboji Lake						East Okoboji Lake
Year Principal Investigator	Sampling Period	Number of lake sampling sites	Total number of samples collected	Avg Total P (mg/L)	SE	Year Principal Investigator	Sampling Period	Number of lake sampling sites	Total number of samples collected	Avg Total P (mg/L)	SE
99	99	99	99	99	99	1971 Bachmann	8/20 to 8/20	5	5	0.230	0.000
1972 Bachmann	6/12 to 8/24	6	25	0.032	0.003	1972 Bachmann	6/1 to 8/24	5	25	0.167	0.013
1973 Bachmann	6/7 to 8/20	6	16	0.028	0.001	1973 Bachmann	6/21 to 8/20	5	39	0.103	0.007
1979 Bachmann	June to Oct	3	14	0.029	0.002	1979 Bachmann	June to Oct	3	10	0.139	0.011
1987 Bachmann	6/2 to 8/13	6	65	0.019	0.000	99	99	99	99	99	99
1988 Bachmann	6/6 to 8/8	6	60	0.018	0.000	99	99	99	99	99	99
1989 Bachmann	6/4 to 8/6	6	60	0.028	0.001	99	99	99	99	99	99
1990 Bachmann	5/27 to 7/29	3	9	0.030	0.003	1990 Bachmann	5/27 to 7/29	3	9	0.102	0.017
1993 Lang	6/5 to 8/20	3	18	0.022	0.003	99	99	99	99	99	99
1994 Lang	6/26 to 8/30	3	18	0.032	0.002	99	99	99	99	99	99
1995 Lang	6/4 to 8/6	3	15	0.030	0.001	99	99	99	99	99	99
1996 Lang	6/14 to 8/5	3	12	0.013	0.002	99	99	99	99	99	99
1997 Lang	6/21 to 8/3	3	12	0.049	0.003	99	99	99	99	99	99
1998 Lang	7/2 to 8/28	3	27	0.026	0.002	99	99	99	99	99	99
1999 CLAMP	6/17 to 8/25	6	36	0.028	0.001	1999 CLAMP	6/17 to 8/31	5	30	0.152	0.011
2000 CLAMP	6/7 to 8/31	6	42	0.026	0.001	2000 CLAMP	6/2 to 8/20	5	35	0.148	0.010
2001 CLAMP	6/14 to 8/22	6	36	0.038	0.001	2001 CLAMP	6/10 to 8/22	5	25	0.127	0.008
2002 CLAMP	6/5 to 8/26	6	42	0.020	0.001	2002 CLAMP	6/5 to 8/28	5	35	0.107	0.007
2003 CLAMP	6/11 to 8/20	6	36	0.023	0.001	2003 CLAMP	6/8 to 8/21	5	30	0.144	0.012
Big Spirit Lake						Upper Gar Lake
Year Principal Investigator	Sampling Period	Number of lake sampling sites	Total number of samples collected	Avg Total P (mg/L)	SE	Year Principal Investigator	Sampling Period	Number of lake sampling sites	Total number of samples collected	Avg Total P (mg/L)	SE
1971 Bachmann	8/26 to 8/26	5	5	0.082	0.010	1971 Bachmann	8/22 to 8/22	1	1	0.150
1972 Bachmann	6/5 to 8/23	5	25	0.029	0.003	1972 Bachmann	6/1 to 8/25	1	5	0.194	0.022
1973 Bachmann	6/26 to 8/30	5	36	0.034	0.001	1973 Bachmann	6/21 to 8/15	1	5	0.120	0.014
1979 Bachmann	June to Oct	3	8	0.067	0.006	1979 Bachmann	June to Oct	3	10	0.137	0.007
1990 Bachmann	5/26 to 7/28	3	9	0.053	0.004	1990 Bachmann	5/27 to 7/29	3	9	0.191	0.017
1999 CLAMP	6/18 to 8/20	5	25	0.087	0.004	1999 CLAMP	6/17 to 8/25	1	5	0.169	0.018
2000 CLAMP	6/7 to 8/31	5	35	0.051	0.003	2000 CLAMP	6/2 to 8/25	1	7	0.170	0.017
2001 CLAMP	6/8 to 8/20	5	30	0.058	0.003	2001 CLAMP	6/8 to 8/22	1	6	0.101	0.012
2002 CLAMP	6/7 to 8/28	5	35	0.042	0.002	2002 CLAMP	6/5 to 8/28	1	7	0.089	0.008
2003 CLAMP	6/5 to 8/19	5	29	0.066	0.003	2003 CLAMP	6/12 to 8/30	1	6	0.114	0.021
Lake Minnewashta						Lower Gar Lake
Year Principal Investigator	Sampling Period	Number of lake sampling sites	Total number of samples collected	Avg Total P (mg/L)	SE	Year Principal Investigator	Sampling Period	Number of lake sampling sites	Total number of samples collected	Avg Total P (mg/L)	SE
1971 Bachmann	8/22 to 8/22	1	1	0.150	99	1971 Bachmann	8/22 to 8/22	1	1	0.230	99
1972 Bachmann	6/1 to 8/25	1	5	0.158	0.009	1972 Bachmann	6/1 to 8/25	1	5	0.212	0.021
1973 Bachmann	6/21 to 8/15	1	5	0.192	0.039	1973 Bachmann	6/21 to 8/15	1	5	0.148	0.037
1979 Bachmann	June to Oct	3	8	0.133	0.006	1979 Bachmann	June to Oct	3	11	0.169	0.006
1990 Bachmann	5/27 to 7/29	3	9	0.132	0.025	1990 Bachmann	5/27 to 7/29	3	9	0.176	0.023
1999 CLAMP	7/14 to 8/25	1	4	0.149	0.009	1999 CLAMP	7/14 to 8/25	1	4	0.171	0.026
2000 CLAMP	6/2 to 8/25	1	7	0.149	0.012	2000 CLAMP	6/2 to 8/25	1	7	0.168	0.010
2001 CLAMP	6/8 to 8/22	1	6	0.101	0.009	2001 CLAMP	6/8 to 8/22	1	6	0.139	0.019
2002 CLAMP	6/5 to 8/28	1	7	0.086	0.010	2002 CLAMP	6/5 to 8/28	1	7	0.136	0.015
2003 CLAMP	6/12 to 8/30	1	6	0.146	0.009	2003 CLAMP	6/12 to 8/30	1	6	0.156	0.017
Little Spirit Lake						Center Lake
Year Principal Investigator	Sampling Period	Number of lake sampling sites	Total number of samples collected	Avg Total P (mg/L)	SE	Year Principal Investigator	Sampling Period	Number of lake sampling sites	Total number of samples collected	Avg Total P (mg/L)	SE
99	99	99	99	99	99	NA	NA	NA	NA	NA	NA
1972 Bachmann	8/25 to 8/25	1	1	0.070	99	NA	NA	NA	NA	NA	NA
1979 Bachmann	Jun to Oct	1	8	0.115	0.016	1979 Bachmann	Jun to Oct	1	10	0.120	0.007
1990 Bachmann	May to August	1	9	0.141	0.007	1990 Bachmann	5/26 to 7/28	1	9	0.105	0.005
NANA	NNAA	NNAA	NNAA	NNAA	NA	1999 CLAMP	7/18 to 8/29	2	7	0.216	0.005
2000 CLAMP	6/24 to 8/19	2	10	0.188	0.021	2000 CLAMP	6/11 to 8/13	2	6	0.172	0.048
2001 CLAMP	6/9 to 8/11	2	10	0.285	0.044	2001 CLAMP	7/8 to 8/25	2	8	0.160	0.012
2002 CLAMP	6/5 to 8/23	2	14	0.390	0.040	2002 CLAMP	6/9 to 8/19	2	12	0.142	0.032
2003 CLAMP	6/11 to 8/18	2	12	0.421	0.029	2003 CLAMP	6/15 to 8/31	2	12	0.108	0.011
Silver Lake
Year Principal Investigator	Sampling Period	Number of lake sampling sites	Total number of samples collected	Avg Total P (mg/L)	SE
1979 Bachmann	Jun to Oct	1	10	0.097	0.012
1990 Bachmann	5/26 to 7/28	1	9	0.105	0.004
1999 CLAMP	7/30 to 8/26	4	12	0.123	0.008
2000 CLAMP	6/6 to 8/22	4	23	0.164	0.015
2001 CLAMP	6/5 to 8/28	4	28	0.209	0.017
2002 CLAMP	6/11 to 8/20	4	24	0.185	0.029
2003 CLAMP	6/10 to 8/19	4	24	0.170	0.017
Elk Lake						Trumbull Lake
Year Principal Investigator	Sampling Period	Number of lake sampling sites	Total number of samples collected	Avg Total P (mg/L)	SE	Year Principal Investigator	Sampling Period	Number of lake sampling sites	Total number of samples collected	Avg Total P (mg/L)	SE
NA	NA	NA	NA	NA	NA	1979 Bachmann	Jun to Oct	1	10	0.130	0.014
NA	NA	NA	NA	NA	NA	1990 Bachmann	May to Aug	1	9	0.267	0.023
2000 CLAMP	6/20 to 8/16	1	3	0.337	0.094	2000 CLAMP	6/20 to 8/16	1	3	0.466	0.082
2001 CLAMP	6/13 to 8/16	1	3	0.247	0.042	2001 CLAMP	6/13 to 8/16	1	3	0.414	0.100
2002 CLAMP	7/22 to 8/26	1	2	0.447	0.096	2002 CLAMP	7/22 to 8/26	1	2	0.375	0.064