Highland (Orange County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°33'36", Longitude 81°22'15"
Period of record: 28 sampling dates; November 25, 1990 to May 28, 1996
Surface area (Shafer et al. 1986): 29 acres / 12 hectacres
Lake Region (Griffith et al. 1997): Orlando Ridge
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 Orlando Promontory division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 3 months sampled:
|
pH |
8.1 |
Sulfate (mg/L) |
10.9 |
|
Total alkalinity (mg/L as CaCO3) |
36.7 |
Calcium (mg/L) |
10.5 |
|
Conductance (µS/cm @ 25 °C) |
148 |
Magnesium (mg/L) |
4.5 |
|
Color (Pt-Co units) |
12 |
Sodium (mg/L) |
7.7 |
|
Chloride (mg/L) |
14.7 |
Potassium (mg/L) |
2.0 |
|
Silicon (mg/L) |
0.6 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 28 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
26 |
39 |
60 |
|
Long-term total nitrogen concentrations (µg/L) |
400 |
650 |
1040 |
|
Long-term total chlorophyll concentrations (µg/L) |
5.7 |
24.9 |
68.7 |
|
Long-term Secchi depth (ft) |
2.2 |
3.9 |
6.5 |
Florida LAKEWATCH data were not collected in 1999.
Highland (Orange County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on June 22, 1993
|
Percent area covered with aquatic vegetation (PAC, %) |
18 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
2 |
|
Average emergent plant biomass (kg wet wt/m2) |
2.6 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.4 |
|
Average submersed plant biomass (kg wet wt/m2) |
0.0 |
|
Average width of emergent and floating-leaved zone (ft.) |
13 |
|
Average lake depth (m) |
3 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
elephant-ear |
Colocasia esculenta |
50 |
|
soft stem bulrush |
Scirpus validus |
50 |
|
bald cypress |
Taxodium distichum |
50 |
|
tapegrass |
Vallisneria americana |
40 |
|
alligator-weed |
Alternanthera philoxeroides |
30 |
|
spatterdock |
Nuphar luteum |
30 |
|
cat-tail |
Typha spp. |
20 |
|
para grass |
Brachiaria mutica |
20 |
|
duck-potato |
Sagittaria lancifolia |
10 |
|
pickerelweed |
Pontederia cordata |
10 |
|
water-pennywort |
Hydrocotyle umbellata |
10 |
|
water primrose |
Ludwigia octovalvis |
10 |
|
willow |
Salix spp. |
10 |
|
torpedograss |
Panicum repens |
10 |
|
elderberry |
Sambucus canadensis |
10 |
Highland (Orange County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on August 9, 1994
|
Percent area covered with aquatic vegetation (PAC, %) |
6 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
1 |
|
Average emergent plant biomass (kg wet wt/m2) |
0.1 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
1.0 |
|
Average submersed plant biomass (kg wet wt/m2) |
0.7 |
|
Average width of emergent and floating-leaved zone (ft.) |
12 |
|
Average lake depth (m) |
3 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
alligator-weed |
Alternanthera philoxeroides |
60 |
|
elephant-ear |
Colocasia esculenta |
60 |
|
water-pennywort |
Hydrocotyle umbellata |
40 |
|
bald cypress |
Taxodium distichum |
40 |
|
spatterdock |
Nuphar luteum |
30 |
|
willow |
Salix spp. |
30 |
|
giant bulrush |
Scirpus californicus |
30 |
|
tapegrass |
Vallisneria americana |
20 |
|
common duckweed |
Lemna minor |
10 |
|
duck-potato |
Sagittaria lancifolia |
10 |
|
pickerelweed |
Pontederia cordata |
10 |
|
lemon bacopa |
Bacopa caroliniana |
10 |
|
cat-tail |
Typha spp. |
10 |
|
water primrose |
Ludwigia octovalvis |
10 |
|
maidencane |
Panicum hemitomon |
10 |
|
torpedograss |
Panicum repens |
10 |