Explore general as well as scientific information about the movement, chemistry and biology of area surface water environments.
The LVI is a rapid bioassessment tool created by the Florida Department of Environmental Protection (FDEP) to assess the biological condition of aquatic plant communities in Florida lakes. It utilizes a multi-metric index that evaluates how closely a lake's plant community compares to a lake containing minimal human disturbance (known as a reference lake) and is based on a field assessment of aquatic and wetland plants. Plants respond to disturbances such as the introduction of invasive exotic species (hydrilla as an example), lakeshore alterations such as creating beaches, and introduction of excess nutrients received by the surrounding watershed (use of fertilizers).
(8/12/2008 - 10/25/2016)
23 (Impaired) - 44 (Healthy)
|Aquatic Life Use Category||LVI Range||Description|
|Exceptional||78 - 100||
Nearly every macrophyte present is a species native to Florida, invasive taxa typically not found. About 30% of taxa present are identified as sensitive to disturbance and most taxa have C of C values > 5.
|Healthy||43 - 77||
About 85% of macrophyte taxa are native to Florida; invasive taxa present. Sensitive taxa have declined to about 15% and C of C values average about 5.
|Impaired||0 - 42||
About 70% of macrophyte taxa are native to Florida. Invasive taxa may represent up to 1/3 of total taxa. Less that 10% of the taxa are sensitive and C of C values of most taxa are < 4.
Biovolume (BV) heat maps give us a look at the aquatic plants under water. These maps represent the ratio of plant height to water depth. Areas with no vegetation will appear blue, and areas where the vegetation reaches the surface will appear red. The data is collected through a combination of GPS and acoustic sonar instrumentation.
Vegetation sampling is the identification and quantification of plant species and communities. Vegetation sampling is a tool used in environmental assessments and can inform a myriad of assessment goals including biomass availability, water quality concerns, management benchmarks, and determining the introduction and establishment of invasive species. Sampling can be conducted via destructive or non-destructive methods. Learn more about vegetation sampling from the links and documents listed below.
Macroinvertebrates are animals that can serve as indicators of water quality. Aquatic macroinvertebrates include animals that live in wet environments such as lakes, marshes, ponds, rivers, streams, and wetlands—they can even be found in buckets of standing water or in puddles. Macroinvertebrates are valuable biological indicators of the health of a water resource. Learn more about macroinvertebrate data »
Here is some information on the aquatic invertebrates living in your watershed.
Grass carp are fish that are used to control nuisance aquatic vegetation (Hydrilla, etc.). Click on the permit information link to visit the Florida Fish and Wildlife Conservation Commission for more information about the Triploid Grass Carp stocking program. Learn more about grass carp permits »
|Stocking Date||Number of Individuals Stocked||Target (at initial stocking)||Primary Use (at initial stocking)|