Bethel (Volusia County)

Bethel (Volusia County)

Florida LAKEWATCH Water Chemistry Summary

Location: Latitude 28°50'57", Longitude 81°12'45"

Period of record: 39 sampling dates; April 23, 1990 to November 26, 1997

Surface area (Shafer et al. 1986): 213 acres / 86 hectacres

Lake Region (Griffith et al. 1997): Eastern Flatlands

Geologic formation (Brooks 1981):

The geology is dominated by dune sand and shell with silty sand, silt, and clay of the Princess Ann Formation.

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Supplemental, unpublished water chemistry data, University of Florida.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 1 month sampled:

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average, and maximum value for the 39 months sampled:

	Minimum	Average	Maximum
Long-term total phosphorus concentrations (µg/L)	21	96	471
Long-term total nitrogen concentrations (µg/L)	470	1160	2890
Long-term total chlorophyll concentrations (µg/L)	4.7	27.9	145.0
Long-term Secchi depth (ft)	1.0	3.7	7.0

Florida LAKEWATCH data were not collected in 1999.

Bethel (Volusia County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on May 28, 1992

Percent area covered with aquatic vegetation (PAC, %)	98
Percent of lake's volume filled with vegetation (PVI, %)	57
Average emergent plant biomass (kg wet wt/m2)	6.4
Average floating-leaved plant biomass (kg wet wt/m2)	7.7
Average submersed plant biomass (kg wet wt/m2)	22.1
Average width of emergent and floating-leaved zone (ft.)	264
Average lake depth (m)	1

Frequency that plant species occur in 10 evenly spaced transects around the lake.