Carroll (Hillsborough County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°3'4", Longitude 82°29'14"
Period of record: 43 sampling dates; October 31, 1992 to December 10, 1999
Surface area (LAKEWATCH): 221 acres / 89 hectacres
Lake Region (Griffith et al. 1997): Land-O-Lakes
Geologic formation (Brooks 1981):
The geology is dominated by argillaceous to sandy impure limestone of the Tampa Formation.
Physiographic region (Brooks 1981):
The water body lies in the Land-O-Lakes subdivision of the Tampa Plain division of the Ocala Uplift District.
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 43 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
6 |
11 |
20 |
|
Long-term total nitrogen concentrations (µg/L) |
310 |
430 |
550 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
3.8 |
11.0 |
|
Long-term Secchi depth (ft) |
5.0 |
11.3 |
16.0 |
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-17-99 |
13 |
320 |
2.3 |
13.5 |
|
May-02-99 |
14 |
440 |
3.3 |
. |
|
Jun-19-99 |
17 |
360 |
8.0 |
5.0 |
|
Jul-24-99 |
17 |
420 |
6.3 |
8.0 |
|
Oct-04-99 |
19 |
530 |
11.0 |
6.0 |
|
Nov-12-99 |
18 |
480 |
5.3 |
8.7 |
|
Dec-10-99 |
15 |
460 |
2.0 |
13.3 |
|
|
|
|
|
|
|
1999 Average |
16 |
430 |
5.5 |
9.1 |
Carroll (Hillsborough County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on July 22, 1997
|
Percent area covered with aquatic vegetation (PAC, %) |
65 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
8 |
|
Average emergent plant biomass (kg wet wt/m2) |
4.2 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
1.5 |
|
Average submersed plant biomass (kg wet wt/m2) |
6.0 |
|
Average width of emergent and floating-leaved zone (ft.) |
33 |
|
Average lake depth (m) |
4 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
lemon bacopa |
Bacopa caroliniana |
90 |
|
tapegrass |
Vallisneria americana |
90 |
|
cone-spur bladderwort |
Utricularia gibba |
60 |
|
fragrant water-lily |
Nymphaea odorata |
50 |
|
cat-tail |
Typha spp. |
50 |
|
torpedograss |
Panicum repens |
50 |
|
water primrose |
Ludwigia octovalvis |
40 |
|
flat-sedge |
Cyperus odoratus |
40 |
|
pickerelweed |
Pontederia cordata |
30 |
|
water-pennywort |
Hydrocotyle umbellata |
30 |
|
bladderwort |
Utricularia foliosa |
30 |
|
willow |
Salix spp. |
20 |
|
maidencane |
Panicum hemitomon |
20 |
|
rush fuirena |
Fuirena scirpoidea |
20 |
|
duck-potato |
Sagittaria lancifolia |
10 |
|
alligator-weed |
Alternanthera philoxeroides |
10 |
|
banana-lily |
Nymphoides aquatica |
10 |
|
southern naiad |
Najas guadalupensis |
10 |
|
Illinois pondweed |
Potamogeton illinoensis |
10 |