Bradford (Leon County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 30°24'9", Longitude 84°20'29"
Period of record: 110 sampling dates; September 9, 1988 to November 15, 1999
Surface area (LAKEWATCH): 195 acres / 79 hectacres (Bathymetric Map)
Lake Region (Griffith et al. 1997): Gulf Coast Lowlands
Geologic formation (Brooks 1981):
The geology is a mixture of two major types dominated by deeply weathered beach and dune sand with some clay lenses of the preglacial Pleistocene and phosphatic sand, silty sand, and clay of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in the Tallahassee Red Hills subdivision of the State Line Hills division of the Ocala Uplift District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 3 months sampled:
|
pH |
4.9 |
Sulfate (mg/L) |
0.7 |
|
Total alkalinity (mg/L as CaCO3) |
0.1 |
Calcium (mg/L) |
0.9 |
|
Conductance (µS/cm @ 25 °C) |
25 |
Magnesium (mg/L) |
0.2 |
|
Color (Pt-Co units) |
127 |
Sodium (mg/L) |
2.1 |
|
Chloride (mg/L) |
5.6 |
Potassium (mg/L) |
0.1 |
|
Silicon (mg/L) |
1.2 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 110 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
5 |
17 |
72 |
|
Long-term total nitrogen concentrations (µg/L) |
210 |
490 |
850 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.3 |
9.1 |
38.0 |
|
Long-term Secchi depth (ft) |
1.5 |
3.7 |
7.9 |
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-28-99 |
19 |
570 |
12.7 |
2.0 |
|
Feb-25-99 |
17 |
510 |
6.3 |
2.0 |
|
Mar-23-99 |
17 |
580 |
4.7 |
2.4 |
|
Apr-26-99 |
21 |
490 |
8.7 |
2.5 |
|
May-26-99 |
25 |
550 |
10.0 |
2.2 |
|
Jun-28-99 |
23 |
650 |
27.0 |
2.3 |
|
Jul-18-99 |
28 |
540 |
19.3 |
2.7 |
|
Aug-24-99 |
18 |
440 |
5.7 |
4.0 |
|
Sep-28-99 |
20 |
470 |
14.0 |
3.0 |
|
Oct-19-99 |
22 |
410 |
10.0 |
4.0 |
|
Nov-15-99 |
24 |
490 |
12.0 |
4.0 |
|
|
|
|
|
|
|
1999 Average |
21 |
520 |
11.8 |
2.8 |
Bradford (Leon County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on June 15, 1993
|
Percent area covered with aquatic vegetation (PAC, %) |
28 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
3 |
|
Average emergent plant biomass (kg wet wt/m2) |
7.3 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.0 |
|
Average submersed plant biomass (kg wet wt/m2) |
0.8 |
|
Average width of emergent and floating-leaved zone (ft.) |
35 |
|
Average lake depth (m) |
2 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
para grass |
Brachiaria mutica |
100 |
|
slender spikerush |
Eleocharis baldwinii |
60 |
|
creeping rush |
Juncus repens |
40 |
|
willow |
Salix spp. |
20 |
|
pipewort |
Eriocaulon spp. |
20 |
|
bald cypress |
Taxodium distichum |
20 |
|
swamp titi |
Cyrilla racemiflora |
20 |
|
buttonbush |
Cephalanthus occidentalis |
10 |
|
torpedograss |
Panicum repens |
10 |
Bradford (Leon County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on June 29, 1999
|
Percent area covered with aquatic vegetation (PAC, %) |
12 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
4 |
|
Average emergent plant biomass (kg wet wt/m2) |
2.8 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.0 |
|
Average submersed plant biomass (kg wet wt/m2) |
0.2 |
|
Average width of emergent and floating-leaved zone (ft.) |
9 |
|
Average lake depth (m) |
2 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
slender spikerush |
Eleocharis baldwinii |
100 |
|
bald cypress |
Taxodium distichum |
100 |
|
buttonbush |
Cephalanthus occidentalis |
90 |
|
maidencane |
Panicum hemitomon |
90 |
|
torpedograss |
Panicum repens |
50 |
|
red maple |
Acer rubrum |
30 |
|
willow |
Salix spp. |
20 |
|
common salvinia |
Salvinia rotundifolia |
10 |
|
variableleaf pondweed |
Potamogeton diversifolius |
10 |
|
water primrose |
Ludwigia octovalvis |
10 |
|
jointed flat sedge |
Cyperus haspan |
10 |
|
swamp titi |
Cyrilla racemiflora |
10 |