Brooklyn Bay (Clay County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°47'40", Longitude 82°1'13"
Period of record: 106 sampling dates; August 9, 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 106 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
6 |
15 |
79 |
|
Long-term total nitrogen concentrations (µg/L) |
140 |
340 |
1140 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
6.6 |
46.5 |
|
Long-term Secchi depth (ft) |
1.5 |
7.4 |
19.0 |
1999 Florida LAKEWATCH Data
Numbers reported below are monthly averages calculated from 2 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 |
340 |
4.0 |
8.0 |
|
Feb-06-99 |
8 |
190 |
4.0 |
9.8 |
|
Mar-12-99 |
9 |
220 |
3.0 |
11.0 |
|
Apr-09-99 |
11 |
210 |
1.0 |
13.0 |
|
May-06-99 |
8 |
320 |
2.0 |
11.8 |
|
Jun-12-99 |
10 |
210 |
1.5 |
14.0 |
|
Jul-10-99 |
10 |
250 |
2.0 |
15.5 |
|
Sep-26-99 |
13 |
310 |
5.0 |
11.8 |
|
Oct-15-99 |
10 |
340 |
4.5 |
9.0 |
|
Nov-19-99 |
13 |
340 |
6.0 |
6.2 |
|
Dec-09-99 |
10 |
300 |
5.5 |
7.0 |
|
|
|
|
|
|
|
1999 Average |
10 |
270 |
3.5 |
10.6 |
Brooklyn Bay (Clay County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on July 22, 1998
|
Percent area covered with aquatic vegetation (PAC, %) |
8 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
1 |
|
Average emergent plant biomass (kg wet wt/m2) |
1.4 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.0 |
|
Average submersed plant biomass (kg wet wt/m2) |
0.3 |
|
Average width of emergent and floating-leaved zone (ft.) |
126 |
|
Average lake depth (m) |
6 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
maidencane |
Panicum hemitomon |
100 |
|
southern cutgrass |
Leersia hexandra |
40 |
|
slender spikerush |
Eleocharis baldwinii |
30 |
|
red ludwigia |
Ludwigia repens |
20 |
|
water-pennywort |
Hydrocotyle umbellata |
20 |
|
wax myrtle |
Myrica cerifera |
10 |
|
stonewort |
Nitella spp. |
10 |