Harris (Lake County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°46'19", Longitude 81°48'50"
Period of record: 113 sampling dates; January 20, 1990 to November 20, 1999
Surface area (Shafer et al. 1986): No data available.
Lake Region (Griffith et al. 1997): Central Valley
Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in the Central Lakes division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 8 months sampled:
|
pH |
8.6 |
Sulfate (mg/L) |
10.2 |
|
Total alkalinity (mg/L as CaCO3) |
101.0 |
Calcium (mg/L) |
31.6 |
|
Conductance (µS/cm @ 25 °C) |
257 |
Magnesium (mg/L) |
19.1 |
|
Color (Pt-Co units) |
14 |
Sodium (mg/L) |
10.1 |
|
Chloride (mg/L) |
19.6 |
Potassium (mg/L) |
3.2 |
|
Silicon (mg/L) |
2.7 |
|
|
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) |
15 |
34 |
70 |
|
Long-term total nitrogen concentrations (µg/L) |
840 |
1860 |
2330 |
|
Long-term total chlorophyll concentrations (µg/L) |
4.0 |
69.3 |
121.3 |
|
Long-term Secchi depth (ft) |
0.8 |
1.9 |
9.5 |
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-19-99 |
38 |
1990 |
69.3 |
1.0 |
|
Feb-19-99 |
56 |
1810 |
92.0 |
1.5 |
|
Mar-22-99 |
44 |
2100 |
94.7 |
0.8 |
|
Apr-16-99 |
52 |
2040 |
94.7 |
1.5 |
|
May-18-99 |
31 |
1780 |
52.3 |
1.9 |
|
Jun-15-99 |
34 |
1830 |
47.7 |
2.0 |
|
Jul-17-99 |
37 |
1710 |
54.7 |
1.4 |
|
Aug-17-99 |
39 |
1810 |
68.3 |
1.3 |
|
Sep-13-99 |
46 |
2100 |
88.3 |
1.0 |
|
Oct-19-99 |
39 |
1770 |
80.7 |
1.5 |
|
Nov-20-99 |
40 |
1780 |
68.7 |
1.5 |
|
|
|
|
|
|
|
1999 Average |
41 |
1880 |
73.8 |
1.4 |
Harris (Lake County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on July 1, 1993
|
Percent area covered with aquatic vegetation (PAC, %) |
38 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
2 |
|
Average emergent plant biomass (kg wet wt/m2) |
3.3 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.4 |
|
Average submersed plant biomass (kg wet wt/m2) |
1.7 |
|
Average width of emergent and floating-leaved zone (ft.) |
84 |
|
Average lake depth (m) |
3 |
Frequency that plant species occur in 30 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
knot grass |
Paspalum distichum |
93 |
|
duck-potato |
Sagittaria lancifolia |
90 |
|
bald cypress |
Taxodium distichum |
90 |
|
tapegrass |
Vallisneria americana |
67 |
|
maidencane |
Panicum hemitomon |
63 |
|
buttonbush |
Cephalanthus occidentalis |
50 |
|
elephant-ear |
Colocasia esculenta |
43 |
|
lemon bacopa |
Bacopa caroliniana |
33 |
|
water primrose |
Ludwigia octovalvis |
33 |
|
cat-tail |
Typha spp. |
30 |
|
elderberry |
Sambucus canadensis |
23 |
|
water-pennywort |
Hydrocotyle umbellata |
20 |
|
giant reed |
Arundo donax |
20 |
|
water-lettuce |
Pistia stratiotes |
17 |
|
pickerelweed |
Pontederia cordata |
17 |
|
sawgrass |
Cladium jamaicense |
17 |
|
sword grass |
Scirpus pungens |
17 |
|
floating water-hyacinth |
Eichhornia crassipes |
13 |
|
willow |
Salix spp. |
13 |
|
rush fuirena |
Fuirena scirpoidea |
13 |
|
wax myrtle |
Myrica cerifera |
10 |
|
torpedograss |
Panicum repens |
10 |
|
bladderwort |
Utricularia foliosa |
10 |
|
common salvinia |
Salvinia rotundifolia |
7 |
|
spatterdock |
Nuphar luteum |
7 |
|
common duckweed |
Lemna minor |
3 |
|
slender spikerush |
Eleocharis baldwinii |
3 |
|
fragrant water-lily |
Nymphaea odorata |
3 |
|
red ludwigia |
Ludwigia repens |
3 |
|
Illinois pondweed |
Potamogeton illinoensis |
3 |
|
salt-bush |
Baccharis spp. |
3 |
|
musk-grass |
Chara spp. |
3 |
|
spider-lily |
Hymenocallis spp. |
3 |