Bennett (Orange County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°33'13", Longitude 81°32'4"
Period of record: 82 sampling dates; July 28, 1992 to December 7, 1999
Surface area (LAKEWATCH): 25 acres / 10 hectacres (Bathymetric Map)
Lake Region (Griffith et al. 1997): Apopka Upland
Geologic formation (Brooks 1981):
The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in the Apopka Hills subdivision of the Apopka Upland division of the Central Lake District.
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 82 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
10 |
20 |
33 |
|
Long-term total nitrogen concentrations (µg/L) |
410 |
620 |
950 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
7.9 |
36.7 |
|
Long-term Secchi depth (ft) |
4.0 |
8.2 |
14.3 |
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 |
|
Feb-09-99 |
16 |
490 |
3.7 |
11.3 |
|
Mar-15-99 |
15 |
500 |
2.3 |
12.7 |
|
Apr-12-99 |
14 |
500 |
1.3 |
14.3 |
|
May-12-99 |
10 |
460 |
2.7 |
10.0 |
|
Jul-27-99 |
16 |
560 |
3.0 |
10.0 |
|
Aug-02-99 |
17 |
590 |
1.3 |
10.0 |
|
Sep-27-99 |
26 |
580 |
4.3 |
7.0 |
|
Nov-09-99 |
22 |
550 |
2.7 |
11.0 |
|
Dec-07-99 |
15 |
500 |
1.7 |
14.0 |
|
|
|
|
|
|
|
1999 Average |
17 |
520 |
2.6 |
11.1 |
Bennett (Orange County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on May 17, 1994
|
Percent area covered with aquatic vegetation (PAC, %) |
6 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
2 |
|
Average emergent plant biomass (kg wet wt/m2) |
4.2 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.0 |
|
Average submersed plant biomass (kg wet wt/m2) |
0.0 |
|
Average width of emergent and floating-leaved zone (ft.) |
22 |
|
Average lake depth (m) |
3 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
cat-tail |
Typha spp. |
90 |
|
water primrose |
Ludwigia octovalvis |
80 |
|
buttonbush |
Cephalanthus occidentalis |
60 |
|
maidencane |
Panicum hemitomon |
60 |
|
pickerelweed |
Pontederia cordata |
40 |
|
willow |
Salix spp. |
40 |
|
wax myrtle |
Myrica cerifera |
30 |
|
smartweed |
Polygonum hydropiperoides |
20 |
|
water-pennywort |
Hydrocotyle umbellata |
20 |
|
torpedograss |
Panicum repens |
20 |
|
floating water-hyacinth |
Eichhornia crassipes |
10 |
|
bacopa |
Bacopa monnieri |
10 |
|
sawgrass |
Cladium jamaicense |
10 |
|
soft rush |
Juncus effusus |
10 |
|
musk-grass |
Chara spp. |
10 |
|
rush fuirena |
Fuirena scirpoidea |
10 |
|
elderberry |
Sambucus canadensis |
10 |
|
jointed flat sedge |
Cyperus haspan |
10 |
|
Baldwin flat sedge |
Cyperus globulosus |
10 |
Bennett (Orange County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on August 3, 1999
|
Percent area covered with aquatic vegetation (PAC, %) |
18 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
4 |
|
Average emergent plant biomass (kg wet wt/m2) |
7.8 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
6.0 |
|
Average submersed plant biomass (kg wet wt/m2) |
1.5 |
|
Average width of emergent and floating-leaved zone (ft.) |
52 |
|
Average lake depth (m) |
4 |
Frequency that plant species occur in 5 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
cat-tail |
Typha spp. |
100 |
|
water primrose |
Ludwigia octovalvis |
80 |
|
maidencane |
Panicum hemitomon |
80 |
|
musk-grass |
Chara spp. |
80 |
|
buttonbush |
Cephalanthus occidentalis |
40 |
|
willow |
Salix spp. |
40 |
|
torpedograss |
Panicum repens |
40 |
|
sedge spp. |
Cyperus spp. |
40 |
|
pickerelweed |
Pontederia cordata |
20 |
|
salt-bush |
Baccharis spp. |
20 |