Magdalene (Hillsborough County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°4'52", Longitude 82°28'56"
Period of record: 113 sampling dates; September 24, 1989 to December 8, 1999
Surface area (Shafer et al. 1986): 238 acres / 96 hectacres
Lake Region (Griffith et al. 1997): Land-O-Lakes
Geologic formation (Brooks 1981):
The geology is dominated by argillaceous to sandy impure limestone of the Tampa Formation.
Physiographic region (Brooks 1981):
The water body lies in the Land-O-Lakes subdivision of the Tampa Plain division of the Ocala Uplift District.
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 113 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
5 |
12 |
20 |
|
Long-term total nitrogen concentrations (µg/L) |
490 |
660 |
920 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
4.4 |
11.7 |
|
Long-term Secchi depth (ft) |
4.8 |
10.0 |
15.2 |
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-30-99 |
16 |
740 |
9.3 |
6.8 |
|
Feb-27-99 |
17 |
700 |
6.3 |
7.0 |
|
Mar-20-99 |
16 |
650 |
4.7 |
6.8 |
|
Apr-25-99 |
16 |
810 |
6.0 |
7.0 |
|
May-25-99 |
16 |
750 |
5.0 |
7.7 |
|
Jul-24-99 |
11 |
730 |
4.0 |
9.0 |
|
Aug-29-99 |
12 |
710 |
4.7 |
8.7 |
|
Oct-09-99 |
13 |
650 |
5.3 |
8.5 |
|
Oct-25-99 |
15 |
700 |
5.3 |
8.0 |
|
Dec-08-99 |
12 |
630 |
3.3 |
10.0 |
|
|
|
|
|
|
|
1999 Average |
14 |
710 |
5.4 |
8.0 |
Magdalene (Hillsborough County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on May 26, 1992
|
Percent area covered with aquatic vegetation (PAC, %) |
46 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
13 |
|
Average emergent plant biomass (kg wet wt/m2) |
3.2 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
1.8 |
|
Average submersed plant biomass (kg wet wt/m2) |
5.8 |
|
Average width of emergent and floating-leaved zone (ft.) |
98 |
|
Average lake depth (m) |
2 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
fragrant water-lily |
Nymphaea odorata |
90 |
|
Illinois pondweed |
Potamogeton illinoensis |
90 |
|
musk-grass |
Chara spp. |
80 |
|
rush fuirena |
Fuirena scirpoidea |
80 |
|
cat-tail |
Typha spp. |
70 |
|
maidencane |
Panicum hemitomon |
70 |
|
duck-potato |
Sagittaria lancifolia |
60 |
|
spatterdock |
Nuphar luteum |
50 |
|
stonewort |
Nitella spp. |
50 |
|
slender spikerush |
Eleocharis baldwinii |
40 |
|
bladderwort |
Utricularia foliosa |
40 |
|
pickerelweed |
Pontederia cordata |
30 |
|
lemon bacopa |
Bacopa caroliniana |
30 |
|
water-pennywort |
Hydrocotyle umbellata |
20 |
|
torpedograss |
Panicum repens |
20 |
|
purple bladderwort |
Utricularia purpurea |
10 |
|
water primrose |
Ludwigia octovalvis |
10 |