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State of The Lake 2013
2013 Lake Data
Dissolved Oxygen
Temperature
Visibility
Date:4/9/13 4/27/13 8/20/13 9/14/13
Mg/L / % temp Mg/L /% Temp Mg/L /% Temp Mg/L /% Temp
Buoy A (viz 3.25m)
10’ 11.72/94% 6.2
30’ 11.73/93.6% 5.8
50’ 11.60/90.8% 5.1
75’ 11.78/92.6% 4.9
Buoy B (viz 3.25 m) (viz 4.75m) ( viz 3.75m)
10’ 11.34/92.7% 6.1 9.7 8.98/96.9 21.4
30’ 11.60/90.5% 5.3 10.73/92.2% 8.2 9.70/88.7 11.5
50’ 11.42/90.0% 5.2 1.95/16.0 6.7
75’ 11.27/88.4% 5.1
95’ 11.25/88.3% 4.9 10.57/92.2% 0.85/7.6 5.8
Buoy C (viz 3.0m) (viz 4.75m) (viz 3.75m)
10’ 11.40/92.8% 6.4 9.0/101.3 21.5
30’ 11.14/87.9% 5.4 9.99/81.1 11.1
50’ 11.35/88.9% 5.3 8.78/72.3% 6.6 0.98/9.8 7.6
pH 8.7 @ Buoy B (surface)
8/20/13
Buoy A Temp DO(Mg/l) % Conductivity pH
0’ 25 8.6/105 290 9.12
5’ 25 8.4/102 290
10’ 25 8.4/102 291
15’ 25 8.2/102 293
20’ 18 12.8/134 270 8.9
25’ 14 13.6/128 257
30’ 11 11.8/109 248
35’ 9 9.1/77 233
40’ 7 4.2/35 225 8.07
8/20/13 _______________________
Buoy B Temp DO(Mg/l) % Conductivity pH
0’ 24 8.7/103 292 8.9
5’ 24 8.7/104 292
10’ 24 8.7/103 292
15’ 24 8.7/103 291
20’ 19 13.3/143 274
25’ 13 13.7/130 265 8.6
30’ 10 11.3/101 248
35’ 9 9.3/81 233
40’ 8 8.1/68 229
50’ 6.5 3.8/30 219 7.8
70’ 6 1.8/15 246 7.8
90’ 5.7 0.3/2.5 278 7.9
_ 8/20/13__________________________
Buoy C Temp DO(Mg/L) % Conductivity pH
0’ 25 8.5/103 291
5’ 25 8.9/107 293
10’ 24 8.9/106 290
20’ 19 12.6/137 290
30’ 11 11.5/111 246
40’ 8 0.5/4 231
50’ 7 0.3/3 230
11/4/13____________________________
Buoy A (Viz 2.5)
Temp DO(Mg/L) % Conductivity pH
10’ 12.1 10.12/92.4
30’ 11.8 9.55/87.2
50’ 7.3 1.65/12.8
Buoy B (viz 2.5)
10’ 12.2 9.20/89.3
30’ 12.0 9.07/82.0
50’ 7.3 0.58/4.7
95’ 6.4 0.73/5.7
Buoy C (viz 2.5)
10’ 12.2 9.42/87.5
30’ 12.0 8.74/82.3
50’ 8.4 0.46/4.2
Total Phosphorus (p)
5/15/13
Buoy B
10’ .019
50’ .015
95’ .335
Buoy C
50’ .034
Erbacher Brook (S5) .018
McGraw Brook (S8) .032
10/03/13
Buoy B
10’ .013
30’ .021
50’ .020
95’ .417
Buoy C
10’ .013
30’ .019
50’ .15
Control < .002
Bird Inventory
4/ /13
1 goose. Saw no Cormorants. No Coots. No Gulls. No Ducks
9/6/13: One cormorant. Many gulls…no ducks…no geese..no coots
Dive Log:
4/30/13:
First dive of the season. Location: Town Grove swim lanes. Water viz about average. A large amount of fish egg masses..Mike Beck identified them as from Crappies. Bottom time 30 minutes. Max depth 30’ . Monitored for caddisfly larvae…found none. Also checked for Zebra Mussels. Found none. Checked for Asian Clams…found none. Placed a barrier on bottom in preparation for the Soar program on May 11 and the Salisbury Central class on May 15. Milfol is beginning to grow.
9/5/13:
Dived and photographed(video too) at Town Grove swim lanes. Water temp in the low 70s. At the TC(20’) a layer of very poor visibility. Saw at least 2…maybe as many as 4…large Grass Eating Carp. Did get a hazy video of one. No zebra mussels. Began the removal of anchors on benthic barriers. Viz 15feet + except in that bad layer.
11/27/13
Water visibility has been greatly reduced this fall. Green algae bloom has been very evident.
Diving at the docks of the swim lanes at the Grove in September I spotted two grass carp. I did get a very hazy/blurry video of them.