Cannon (Polk County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°2'16", Longitude 81°45'9"
Period of record: 16 sampling dates; October 13, 1991 to March 13, 1999
Surface area (Shafer et al. 1986): 336 acres / 136 hectacres
Lake Region (Griffith et al. 1997): Winter Haven/Lake Henry Ridges
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 Winter Haven Karst division of the Central Lake District.
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 16 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
28 |
43 |
73 |
|
Long-term total nitrogen concentrations (µg/L) |
730 |
1010 |
1400 |
|
Long-term total chlorophyll concentrations (µg/L) |
20.7 |
39.5 |
65.0 |
|
Long-term Secchi depth (ft) |
1.9 |
2.6 |
3.3 |
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-18-99 |
37 |
880 |
30.7 |
3.0 |
|
Feb-27-99 |
35 |
730 |
27.0 |
3.3 |
|
Mar-13-99 |
39 |
850 |
30.0 |
3.3 |
|
|
|
|
|
|
|
1999 Average |
37 |
820 |
29.2 |
3.2 |
Cannon (Polk County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on August 12, 1992
|
Percent area covered with aquatic vegetation (PAC, %) |
4 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
1 |
|
Average emergent plant biomass (kg wet wt/m2) |
5.5 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
2.0 |
|
Average submersed plant biomass (kg wet wt/m2) |
5.7 |
|
Average width of emergent and floating-leaved zone (ft.) |
56 |
|
Average lake depth (m) |
4 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
tapegrass |
Vallisneria americana |
70 |
|
maidencane |
Panicum hemitomon |
70 |
|
water primrose |
Ludwigia octovalvis |
60 |
|
willow |
Salix spp. |
50 |
|
torpedograss |
Panicum repens |
50 |
|
duck-potato |
Sagittaria lancifolia |
40 |
|
cat-tail |
Typha spp. |
40 |
|
elephant-ear |
Colocasia esculenta |
40 |
|
knot grass |
Paspalum distichum |
40 |
|
water-pennywort |
Hydrocotyle umbellata |
20 |
|
salt-bush |
Baccharis spp. |
20 |
|
floating water-hyacinth |
Eichhornia crassipes |
10 |
|
spatterdock |
Nuphar luteum |
10 |
|
yellow water-lily |
Nymphaea mexicana |
10 |
|
pickerelweed |
Pontederia cordata |
10 |
|
flat-sedge |
Cyperus odoratus |
10 |
|
bald cypress |
Taxodium distichum |
10 |
Cannon (Polk County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on August 17, 1994
|
Percent area covered with aquatic vegetation (PAC, %) |
20 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
4 |
|
Average emergent plant biomass (kg wet wt/m2) |
6.6 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.0 |
|
Average submersed plant biomass (kg wet wt/m2) |
5.1 |
|
Average width of emergent and floating-leaved zone (ft.) |
47 |
|
Average lake depth (m) |
4 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
water primrose |
Ludwigia octovalvis |
80 |
|
knot grass |
Paspalum distichum |
80 |
|
cat-tail |
Typha spp. |
70 |
|
tapegrass |
Vallisneria americana |
60 |
|
maidencane |
Panicum hemitomon |
50 |
|
willow |
Salix spp. |
40 |
|
torpedograss |
Panicum repens |
40 |
|
common salvinia |
Salvinia rotundifolia |
30 |
|
duck-potato |
Sagittaria lancifolia |
30 |
|
alligator-weed |
Alternanthera philoxeroides |
30 |
|
water-pennywort |
Hydrocotyle umbellata |
30 |
|
hydrilla |
Hydrilla verticillata |
30 |
|
elephant-ear |
Colocasia esculenta |
30 |
|
pickerelweed |
Pontederia cordata |
20 |
|
baby-tears |
Micranthemum umbrosum |
10 |
|
coontail |
Ceratophyllum demersum |
10 |
|
wax myrtle |
Myrica cerifera |
10 |
|
giant bulrush |
Scirpus californicus |
10 |
|
bald cypress |
Taxodium distichum |
10 |
|
jointed flat sedge |
Cyperus haspan |
10 |