Embed Size (px)
Citation preview
Honeoye Lake Monitoring Program
for 2003-2009
Jack Starke
Honeoye Lake Watershed Task Force
Honeoye Lake
Honeoye Lake
Effect of Lake Depth on Trophic Indices
V-Factor / Phosphorus
R2 = 0.58
0
5
10
15
20
25
30
1 2 3 4 5
V-Factor = Mean Depth(m)/Cube Root(Volume(km3))
Ph
osp
ho
rus (
ug
/l)
.
Honeoye
Conesus
Otisco
Cayuga
Keuka
Hemlock
Owasko
Canandaigua
Seneca
Skaneateles
Canadice
Sampling Sites
Historical Secchi Readings
Midlake Site D Secchi Reading (May-October)
Average 3.6 meters
0
1
2
3
4
5
6
7
8
1996 1997 1998 1999 2000 2003 2004 2005 2006 2007 2008 2009
Year
Avera
ge S
ecch
i (m
) .
Minimum
Average
Maximum
Historical Chlorphyll-a Readings
Midlake Site D Chlorphyll-a Reading (May-October)
Average 12.8 ug/l
0
10
20
30
40
50
60
1996 1997 1998 1999 2000 2003 2007 2008 2009
Year
Ch
lorp
hyll
-a (
ug
/l)
.
Minimum
Average
Maximum
Historical Total Phosphorus
Midlake Site D Surface Total Phosphorus (May-October)
Average 24.8 ug/l
0
10
20
30
40
50
60
70
1996 1997 1998 1999 2000 2003 2007 2008 2009
Year
TP
(u
g/l
)
.
Minimum
Average
Maximum
Trophic Indicators Summary
Oligo-trophic
Meso-trophic
Eu-
trophic
Yearly
Avg.
Min.
Yearly
Avg.
Mean
Yearly
Avg.
Max.
TP
(ug/l)
<10 10-20 >20 13.7 24.8 42.4
Chloro-phyll-a
(ug/l)
<4 4-10 >10 4.0 12.8 26.0
Secchi
(m)
>4 2-4 <2 2.0 3.6 5.5
Seasonal Variation ofLake Temperature Difference
Midlake Site D Water Temperature Difference (Surface - Bottom)
2003-2009 Average
-3
-1
1
3
5
2/1
2/1
5
3/1
3/1
5
3/2
9
4/1
2
4/2
6
5/1
0
5/2
4
6/7
6/2
1
7/5
7/1
9
8/2
8/1
6
8/3
0
9/1
3
9/2
7
10/1
1
10/2
5
11/8
Date
Delt
a T
(C
)
.
Seasonal Variation ofDO & Secchi Variation
Midlake Site D Bottom DO and Secchi
2003-2009 Average
0
2
4
6
8
10
5/1
5/1
5
5/2
9
6/1
2
6/2
6
7/1
0
7/2
4
8/7
8/2
1
9/4
9/1
8
10/2
Date
DO
(m
g/L
)
.
2
3
4
5
6
7
Secch
i (m
)
.
Avgerage DO Average Secchi
Seasonal Variation of Surface Chlorphyll-a
Midlake Site D Chlorphyll-a at 0m
0
10
20
30
40
2/1
5
5/1
5
6/1
6/1
5
7/1
7/1
5
8/1
8/1
5
9/1
9/1
5
10/1
Date
TP
(u
g/L
) .
2003 2007 2008 2009
Seasonal Variation ofDeep Water TP
Midlake Site D Total Phosphorus at 8m
0
100
200
300
400
500
2/1
5
5/1
5
6/1
6/1
5
7/1
7/1
5
8/1
8/1
5
9/1
9/1
5
10/1
Date
TP
(u
g/L
) .
1998 2003 2007 2008 2009
Seasonal Variation ofDeep Water SRP
Midlake Site D Soluble Reactive Phosphorus at 8m
0
20
40
60
80
100
120
140
2/1
5
5/1
5
6/1
6/1
5
7/1
7/1
5
8/1
8/1
5
9/1
9/1
5
10/1
Date
SR
P (
ug
/L)
.
2003 2007 2008 2009
Effect of Location In Lake
2008 Sites D & F Sechii Disk Readings
0
1
2
3
4
5
6
7
02/1
2
04/2
6
05/1
2
05/2
9
06/1
0
06/2
3
07/0
8
07/2
3
08/1
1
08/2
5
09/1
5
Date
Secch
i (m
) .
Site D
Site F
2008 Sites D & F Chlorphyll-a Readings
0
2
4
6
8
10
12
02/1
2
04/2
6
05/1
2
05/2
9
06/1
0
06/2
3
07/0
8
07/2
3
08/1
1
08/2
5
09/1
5
Date
Ch
lorp
hyll-a
(u
g/l)
.
Site D
Site F
2008 Site F Dissolved Oxygen
0
2
4
6
8
10
4/1
5
4/2
9
5/1
3
5/2
7
6/1
0
6/2
4
7/8
7/2
2
8/5
8/1
9
9/2
9/1
6
9/3
0
Date
DO
(m
g/l)
.
Surface
5 m
Full Report
Report Available at:
hvaweb.org/water_quality_monitoring.html
Contact:
