Brooklyn (Clay County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°48'9", Longitude 82°1'52"
Period of record: 73 sampling dates; June 4, 1989 to December 9, 1999
Surface area (LAKEWATCH): 734 acres / 297 hectacres (Bathymetric Map)
Lake Region (Griffith et al. 1997): Trail Ridge
Geologic formation (Brooks 1981):
The geology is dominated by quartz sand and quartzite gravel with sandy clay beds of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in the Interlachen Sand Hills division of the Central Lake District.
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 73 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
4 |
9 |
19 |
|
Long-term total nitrogen concentrations (µg/L) |
120 |
230 |
390 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
4.9 |
21.0 |
|
Long-term Secchi depth (ft) |
3.5 |
10.5 |
19.0 |
1999 Florida LAKEWATCH Data
Numbers reported below are monthly averages calculated from 3 stations for total phosphorus (TP, µg/L), total nitrogen (TN, µg/L), chlorophyll (CHL, µg/L) and Secchi depth (SECCHI, ft) during 1999:
|
Date |
TP (µg/L) |
TN (µg/L) |
CHL (µg/L) |
SECCHI (ft |
|
Jan-09-99 |
10 |
280 |
5.7 |
7.7 |
|
Feb-06-99 |
7 |
270 |
4.0 |
10.8 |
|
Mar-12-99 |
10 |
220 |
3.3 |
10.8 |
|
Apr-09-99 |
9 |
390 |
1.7 |
13.8 |
|
May-06-99 |
9 |
290 |
2.0 |
12.8 |
|
Jun-12-99 |
9 |
230 |
2.0 |
14.0 |
|
Jul-10-99 |
9 |
240 |
2.3 |
15.2 |
|
Sep-26-99 |
10 |
260 |
6.0 |
10.6 |
|
Oct-15-99 |
11 |
280 |
6.0 |
10.5 |
|
Nov-19-99 |
10 |
310 |
4.5 |
10.0 |
|
Dec-09-99 |
10 |
270 |
3.5 |
10.8 |
|
|
|
|
|
|
|
1999 Average |
9 |
280 |
3.7 |
11.5 |
Brooklyn (Clay County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on July 22, 1998
|
Percent area covered with aquatic vegetation (PAC, %) |
34 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
4 |
|
Average emergent plant biomass (kg wet wt/m2) |
2.7 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.0 |
|
Average submersed plant biomass (kg wet wt/m2) |
0.4 |
|
Average width of emergent and floating-leaved zone (ft.) |
161 |
|
Average lake depth (m) |
5 |
Frequency that plant species occur in 20 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
maidencane |
Panicum hemitomon |
100 |
|
red ludwigia |
Ludwigia repens |
70 |
|
southern cutgrass |
Leersia hexandra |
45 |
|
wax myrtle |
Myrica cerifera |
30 |
|
banana-lily |
Nymphoides aquatica |
10 |
|
buttonbush |
Cephalanthus occidentalis |
10 |
|
rush fuirena |
Fuirena scirpoidea |
10 |
|
Florida bladderwort |
Utricularia floridana |
10 |
|
slender spikerush |
Eleocharis baldwinii |
5 |
|
purple bladderwort |
Utricularia purpurea |
5 |
|
salt-bush |
Baccharis spp. |
5 |
|
willow |
Salix spp. |
5 |
|
St. John's wort |
Hypericum spp. |
5 |
|
hatpin |
Eriocaulon decangulare |
5 |
|
leconte sedge |
Cyperus lecontei |
5 |