Broward (Putnam County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°30'33", Longitude 81°35'33"
Period of record: 100 sampling dates; April 13, 1987 to December 20, 1999
Surface area (LAKEWATCH): 471 acres / 191 hectacres (Bathymetric Map)
Lake Region (Griffith et al. 1997): Crescent City/DeLand Ridges
Geologic formation (Brooks 1981):
The geology is a mixture of two major types dominated by sand dunes and well sorted fine sand of the Pleistocene and coastal sand and shelly silty sand of the preglacial Pleistocene.
Physiographic region (Brooks 1981):
The water body lies in the St. John’s Offset division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 4 months sampled:
|
pH |
5.5 |
Sulfate (mg/L) |
12.5 |
|
Total alkalinity (mg/L as CaCO3) |
1.3 |
Calcium (mg/L) |
3.1 |
|
Conductance (µS/cm @ 25 °C) |
79 |
Magnesium (mg/L) |
5.6 |
|
Color (Pt-Co units) |
4 |
Sodium (mg/L) |
7.5 |
|
Chloride (mg/L) |
12.5 |
Potassium (mg/L) |
1.5 |
|
Silicon (mg/L) |
0.1 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 100 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
0 |
6 |
14 |
|
Long-term total nitrogen concentrations (µg/L) |
120 |
210 |
470 |
|
Long-term total chlorophyll concentrations (µg/L) |
0.3 |
2.1 |
6.7 |
|
Long-term Secchi depth (ft) |
8.3 |
13.7 |
20.5 |
1999 Florida LAKEWATCH Data
Numbers reported below are monthly averages calculated from 4 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-27-99 |
3 |
200 |
2.0 |
20.5 |
|
Feb-26-99 |
6 |
240 |
2.0 |
14.0 |
|
Mar-25-99 |
5 |
190 |
1.0 |
16.0 |
|
Apr-22-99 |
5 |
240 |
1.3 |
13.0 |
|
May-21-99 |
4 |
280 |
2.0 |
12.0 |
|
Jul-08-99 |
5 |
230 |
. |
15.7 |
|
Aug-09-99 |
9 |
250 |
2.0 |
17.0 |
|
Sep-15-99 |
8 |
270 |
3.0 |
16.7 |
|
Oct-18-99 |
7 |
270 |
2.3 |
14.5 |
|
Nov-19-99 |
10 |
200 |
2.3 |
13.0 |
|
Dec-20-99 |
9 |
250 |
2.3 |
11.0 |
|
|
|
|
|
|
|
1999 Average |
6 |
240 |
2.0 |
14.8 |
Broward (Putnam County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on May 14, 1992
|
Percent area covered with aquatic vegetation (PAC, %) |
32 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
3 |
|
Average emergent plant biomass (kg wet wt/m2) |
0.8 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.6 |
|
Average submersed plant biomass (kg wet wt/m2) |
1.1 |
|
Average width of emergent and floating-leaved zone (ft.) |
21 |
|
Average lake depth (m) |
3 |
Frequency that plant species occur in 20 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
water-pennywort |
Hydrocotyle umbellata |
90 |
|
slender spikerush |
Eleocharis baldwinii |
85 |
|
bog-moss |
Mayaca fluviatilis |
80 |
|
rush fuirena |
Fuirena scirpoidea |
75 |
|
maidencane |
Panicum hemitomon |
60 |
|
pickerelweed |
Pontederia cordata |
30 |
|
cat-tail |
Typha spp. |
25 |
|
dwarf arrowhead |
Sagittaria subulata |
25 |
|
southern cutgrass |
Leersia hexandra |
20 |
|
banana-lily |
Nymphoides aquatica |
15 |
|
red root |
Lachnanthes caroliniana |
15 |
|
spatterdock |
Nuphar luteum |
10 |
|
water primrose |
Ludwigia octovalvis |
10 |
|
willow |
Salix spp. |
5 |
|
pipewort |
Eriocaulon spp. |
5 |
|
respuinata bladderwort |
Utricularia resupinata |
5 |
Broward (Putnam County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on October 16, 1996
|
Percent area covered with aquatic vegetation (PAC, %) |
74 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
10 |
|
Average emergent plant biomass (kg wet wt/m2) |
2.5 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.1 |
|
Average submersed plant biomass (kg wet wt/m2) |
2.4 |
|
Average width of emergent and floating-leaved zone (ft.) |
93 |
|
Average lake depth (m) |
4 |
Frequency that plant species occur in 20 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
rush fuirena |
Fuirena scirpoidea |
100 |
|
bog-moss |
Mayaca fluviatilis |
95 |
|
maidencane |
Panicum hemitomon |
95 |
|
slender spikerush |
Eleocharis baldwinii |
80 |
|
red ludwigia |
Ludwigia repens |
75 |
|
pickerelweed |
Pontederia cordata |
75 |
|
water-pennywort |
Hydrocotyle umbellata |
75 |
|
St. John's wort |
Hypericum spp. |
35 |
|
banana-lily |
Nymphoides aquatica |
30 |
|
torpedograss |
Panicum repens |
30 |
|
respuinata bladderwort |
Utricularia resupinata |
30 |
|
southern cutgrass |
Leersia hexandra |
25 |
|
dwarf arrowhead |
Sagittaria subulata |
20 |
|
water-moss |
Fontinalis spp. |
20 |
|
cone-spur bladderwort |
Utricularia gibba |
20 |
|
spatterdock |
Nuphar luteum |
10 |
|
smartweed |
Polygonum hydropiperoides |
10 |
|
wax myrtle |
Myrica cerifera |
10 |
|
fragrant water-lily |
Nymphaea odorata |
5 |
|
cat-tail |
Typha spp. |
5 |
|
purple bladderwort |
Utricularia purpurea |
5 |
|
elephant-ear |
Colocasia esculenta |
5 |
|
water primrose |
Ludwigia octovalvis |
5 |
|
sedge family |
Cyperaceae |
5 |
|
red root |
Lachnanthes caroliniana |
5 |
|
yellow-eyed grass |
Xyris spp. |
5 |
|
jointed flat sedge |
Cyperus haspan |
5 |